Electronics & Circuitry

The board is designed for self-assembly of a Fortune M2 or Fortune M3 metal detector Features of the latest version: - Battery protection is redesigned to minimize voltage drop - Provides for electronic power off by a button. Consumption current is reduced to zero when disconnected. - Filter capacitors in power supply circuits are added. - Both ceramic smd capacitors and CL21 metal-film lead capacitors can be used in the filters. - Ratings of battery measuring circuit corrected - smoother adjustment - Board is designed for KRADEX Z80 case - display WG12864B Features of Fortune M3/M2 rev.3 board assembly - When assembling the M2 version, install the MCP41010 (DA100) chip and the JC3 jumper. Do not install the DA6 chip. - When assembling the M3 version, install the MCP42010 (DA6) chip, do not install the JC3 jumper. Do not install the DA100 chip. - Resistor R22 and capacitor C19 are in the same position and need to be soldered one on top of the other. - You should not solder all regulators at the same time, you need to solder either LD1117 or NCP5501 - The board has six buttons, if you do not need an electronic switch, you must install five buttons as marked at the bottom of the board and install two jumpers on the board - JC1 and JC2. In this case, the elements of the electronic switch are not installed. - The assembled board is fastened to the rear wall of the enclosure using 18 mm high metal stands I can send a list of components and a circuit diagram to your email on request

Оригінальний жорсткий диск у відмінному стані. Дивіться фото.

Оригінальний жорсткий диск у відмінному стані. Дивіться фото.

This Western Digital 22100 IDE 2111.8MB Hard Drive (WDAC22100-00H) is a used working item. This is a great device that has been tested and guaranteed to work. You can see the photos for more details, and if you have any further questions, please contact us.

Monitor after service

The heart of Frames is a 4-channel digitally controlled analog VCA. Through flexible input/output mixing and normalling options, it can be patched to serve the following purposes (among others): * 4-channel attenuator/VCA. * 4-channel mixer. * 4-channel programmable CV source. * Quadraphonic panner.

The original case made of polywood and venner. 

Handmade Tesla Music Coil. The body is made of wood and plastic and covered with several layers of varnish to prevent damage to the wood and give a more beautiful appearance. All plastic parts were modeled and printed on a 3D printer. The Tesla coil control unit is equipped with: an MP3 player, Bluetooth and tone block that allows you to listen to music from a regular USB flash card and microSD card, as well as via Bluetooth from a smartphone or computer. Modes: MP3 player and Bluetooth are switched by a switch on the back panel of the control unit. This Tesla music coil works only on 220 volts and consumes 250 watts. For the correct operation of this Tesla coil, grounding is required, if there is a connected grounding in the sockets in the house, then additional grounding no need to connect. If there is no grounding in the house, it must be connected through the cable included in the kit.

New tested photoelectric sensor E51.

Box of soviet high quality bakelit 8-pin octal sockets with spring mount, for popular tubes 6L6, 6V6, 6SN7 etc.  Price for 80 sockets.

Box of 50 pcs. power pentodes 6P1P-EV with Noval socket (9-pin). With a red dot, and "OTK" (best military quality). As you can see from the photo, not all tubes are marked with the Svetlana logo, but it is absolutely brand new opened box. 6P1P-EV is similar to 6AQ5, EL90 and 6V6 tubes but with different pinout. Direct replacement 6P1 in Chinese tube amps. Content of precious metals (in one tube): gold - 0.007036 grams platinum - 0.000162 grams Tube factory "Svetlana" (St Petersburg)=C=

I would like to propose pieces (non-treated) of single crystal magnesium fluoride (MgF2). The material was produced in Ukraine, by the Institute for single crystals (Kharkiv), in October 1983. It was planned to use it during his scientfic-research work, but priorities changed and the materials was lying in the box about next 38 years. There are 11 pieces available with total mas 4,830 kg, their parameters are shown in the table below. Crystallographic  orientation (if marked) Position No. Form/Dimensions, mm Mass, kg F 1 Irregularly-shaped/ 150*77 1,800 F 2 Cylindrical shape/ 36*90 0,275 - F 3 Cylindrical shape/ 93*39 0,300 - F 4 Cylindrical shape/ 85*25 0,258 - F 5 Cylindrical shape/ 81*36 0,234 - F 6 Prism/39*35 0,087 - F 7 Prism/ 69*24 0,182 F 8 Irregularly-shaped/ 57*39 0,245 - F 9 Prism/ 73*22 0,220 - F 10 Prism with cleavage/ 80*42 0,535 F 11 Prism with cleavage/ 80*60 0,700 MgF2 is rare material, which is usually being used for presicion optical components production. These components include  lenses, prisms and  windows with simple or complicated geometry. This material is trasnsparent (transmissivity over 0,9) in spectral range 120-8000 nm.  It should be outlined, that there are only non-treated pieces (see the Photos) available!   Photos have been obtained at day light for the most true color demonstration. The price is noticed per 1 kg.

Automatic staircase lighting system SmartStairway SS-26LCD PRO Allows you to create lighting using LED light sources with a current of up to 5A per channel from 4 to 26 steps with automatic activation. The controller is designed to work with monochrome (single-color) LED strips and lamps with a supply voltage of 12 or 24V DC and a power of not more than 5A for each of the steps (for a voltage of 12V, the maximum allowable power is 60W per channel, and for a voltage of 24V - not more than 120W for each channel). Luminaires and LED strips must PWM dimming, otherwise they may flicker at low brightness values. As a rule, the vast majority of LED strips are well dimmable, but still check this parameter with the seller of LED strips. If you want to create multi-color backlighting using analog RGB LED strips, use the optional SmartStairway APS-21 RGB Inverter Amplifier. The controller allows you to create static lighting steps with a smooth successive switching on of steps one by one in the direction of movement of a person (from the entrance to the exit) or from both sides, if the entrance to the stairs is made from two sides at once. In standby mode, you can get emergency lighting for the first and last steps by setting their brightness from 0 to 100%. Accordingly, if you set the brightness value to 0%, the first and last steps will be turned off in standby mode. •   You can connect a digital light level sensor to the system, which is included in all kits except for the “minimum” kit. This sensor does not have a housing and has a compact size. It can be mounted under any decor elements of the stairs, it is necessary to leave only a hole with a diameter of 5 mm for the photosensitive element. The sensor has a trimming resistor that will allow you to adjust the required brightness level at which the system starts to work. Provides day/night operation. If you do not need it, you can simply deactivate the sensor in the settings menu. • The system allows you to create interactive lighting stairs with 4 to 26 steps with one entrance and exit. (i.e. one flight of stairs (staircase)) You can connect a digital light level sensor to the system, which is included in all kits except for the “minimum” kit. This sensor does not have a housing and has a compact size. It can be mounted under any decor elements of the stairs, it is necessary to leave only a hole with a diameter of 5 mm for the photosensitive element. The sensor has a trimming resistor that will allow you to adjust the required brightness level at which the system starts to work. Provides day/night operation. If you do not need it, you can simply deactivate the sensor in the settings menu. • The system can work with three types of sensors in any combination: Pyroelectric sensor. Detects the movement of warm objects at a distance of up to 7 meters. Ultrasonic rangefinders. Detects an obstacle at a distance of up to 1.2m. Based on the principle of a reflected sound signal. Infrared NPN obstacle sensors. They detect an obstacle at a distance of up to 0.8 m. Based on the principle of a reflected infrared beam. At rest, they give a logical unit - a high signal. When an obstacle is detected - a logical zero (low signal). This is the most practical sensor, since this principle almost completely eliminates possible false alarms, errors in the choice of wires and the occurrence of induction currents in incorrectly selected and laid wires. The system is configured using buttons and a two-line character display. It also displays information about the status of the system and the distance values measured by ultrasonic sensors. The setting is carried out using an intuitive interface of the settings menu and the selection of values by mechanical buttons. For your convenience, we have created a short video tutorial on connecting and configuring, the link to which you will find below. You can also read more about connecting and configuring the system in the user manual, the link to which is available below. Download: User Manual (English, PDF 13MB):URL:  shop.xopc.net.ua/files/pasport-ss26LCDZ104_ENG_2023.pdf Kits include: All kits do not include LED light sources, power supplies, wires and other associated materials, the number, power and parameters of which depend on your staircase, its dimensions, number of steps and the configuration of the entrance and exit. PIR KIT - SmartStairway SS-26 LCD PRO controller - 1 pc. - Pyroelectric motion sensor SmartStairway PIR-SR501-1 - 2 pcs - Unpackaged TTL light level sensor - 1 pc. - user manual - 1 pc. Ultasonic Kit - SmartStairway SS-26 LCD PRO controller - 1 pc. - Ultrasonic distance sensor SmartStairway US-042 - 2 pcs - Unpackaged TTL light level sensor - 1 pc. - user manual - 1 pc. "IR KIT" - SmartStairway SS-26 LCD PRO controller - 1 pc. - infrared obstacle sensor E18-D80NK - 2 pcs - Unpackaged TTL light level sensor - 1 pc. - user manual - 1 pc. "Mixed Kit" - SmartStairway SS-26 LCD PRO controller - 1 pc. - Pyroelectric motion sensor SmartStairway PIR-SR501-1 - 1 pc. - Ultrasonic distance sensor SmartStairway US-042 - 1 pc. - Unpackaged TTL light level sensor - 1 pc. - user manual - 1 pc. "Minimal" - SmartStairway SS-26 LCD PRO controller - 1 pc. - user manual - 1 pc. No sensors are included in the minimum kit. The main elements   - Button to enter the settings "Setup" - Up button. In standby mode, activates the staircase light from top to bottom. In setting mode, increases the setting. - Down button. In standby mode, activates the staircase light from bottom to top. In setting mode, decreases the parameter. - Terminal for connecting "+" from a DC12V or DC24V power source. - Terminal for connecting "-" (Ground) from a DC12V or DC24V power source. - Terminal for connecting “Digital Output (DO)” from a light level sensor - Terminal for connecting the "Triger" of the lower ultrasonic sensor or "Data" of the pyroelectric, infrared or microwave sensors - Terminal for connecting “Echo” of the lower ultrasonic sensor, not used for other types of sensors. - Terminal for connecting the "Triger" of the upper ultrasonic sensor or "Data" of the pyroelectric, infrared or microwave sensors - Terminal for connecting “Echo” of the upper ultrasonic sensor, not used for other types of sensors. - Terminal for connecting the upper push button (non-latching button). - Terminal for connecting the lower button for forced activation (momentary button). - Stabilized voltage output terminal +5V for connecting the power supply of sensors and buttons. Max. Current strength 0.5A. - Terminal for connecting "-" LED strip or first step lamp. Max. 5A. - Terminal for connecting "-" LED strip or step lamp number 2 ... 25. Max. 5A for each of them. - Terminal for connecting "-" LED strip or lamp of the last step. Max. 5A. Specifications. Dimensions and mount: Supply voltage: 139 х 89 х 65 mm, DIN-rail (8-DIN) DC 12 / 24V  Power consumption in standby mode: no more than 3W. Average consumption in the operating mode of the backlight on: no more than 7 W. Built-in power stabilizer voltage and power: DC5V, 0.5A (protected by self-healing fuse) Compatible sensors: Pyroelectric HC-SR501, HC-SR505,  Ultrasonic HC-SR04, Infrared obstacle sensors NPN, Microwave rcwl-0516 and others similar in terms of power and level TTL signal. Compatible LED strips: DC 12 / 2 4 V analogues PWM dimmable . Number of steps: from 4 to 2 6 pcs. Maximum load power per channel: 5 A /channel (with a load of 12V - 60W, with a load of 24V - 120W.)   The choice of sensors and their differences. Pyroelectric sensor. The controller can work with pyroelectric sensors or ultrasonic rangefinders in any combination. Pyroelectric sensors are easy to install and connect, do not require additional settings. They determine the movement of objects, the temperature of which is 10 degrees or more higher than the temperature of the surrounding objects. They can detect movement up to 5 meters away. The angle of view of the sensors is approximately 45-50 degrees (for more details, see the diagram in the user manual). The sensors are not demanding on the choice of installation location and can be installed near the floor or steps. This type of sensor is preferred if your staircase allows it. Ultrasonic sensor. An ultrasonic sensor is a rangefinder that measures the distance to an obstacle. Its principle of operation is based on the emission of an ultrasonic signal, which, after being reflected from an obstacle, returns to the sensor. The controller calculates the distance to the obstacle based on the speed of sound and the signal return time. Compares it with the value that you have written into memory and if the measured distance is less - turns on the light. The maximum distance for detecting obstacles is 1.2m (47 "). The principle of operation of ultrasonic sensors has some technological disadvantages: - the sound is not reflected from the sound-absorbing surfaces. The sensor will not see soft sound-absorbing objects - the speed of sound depends on temperature and atmospheric pressure, therefore, when this parameter is changed, the distance value may slightly change. - The angle of propagation of the sound wave is approximately 45-60 degrees (see the diagram in the user manual for more details). Therefore, it is important to choose the right location for the sensor. It should not be located close to the floor or a step, as if it is close to the side surface, the sensor will measure the distance to this surface, and not to an obstacle on the stairs. Therefore, it is recommended to install the sensor at least  50 cm  from the floor or step. - Ultrasonic rangefinders are high-frequency devices operating at a frequency of more than 400 kHz. Therefore, use shielded wires no longer than 10m ( 32 feet ) to connect them.   Infrared obstacle sensors. This type of sensor provides obstacle detection at a distance of 3 to 80 cm. The distance is adjusted using a multi-turn trimmer and has an LED indicating obstacle detection. It works on the principle of reflected infrared beam. So, for example, you can set the distance, for example, 70 cm, and the sensor will be triggered if the distance to the obstacle is less than the set distance. At the same time, the sensor will not see any obstacles further away. The special feature of this sensor is its NPN output. That is, when an obstacle is detected, the sensor outputs a logical zero (low signal), the rest of the time, when there is no obstacle, it provides a logical unit (high signal) at the output. This is very useful if the wires are long enough and if induced currents from other electrical appliances or wires can occur in these wires. It will not give false inclusions while doing so. This is the best type of sensor for stairways without railings or if the sensor is directed into walkways. It is more practical than ultrasonic sensor. Shielded wires must be used for all types of sensors. In this case, the shield of the wire should be connected to "GND" of the power supply. This will protect the system from electromagnetic interference and inductive pickup. Since any wire is an antenna, it collects inductive interference from other electrical devices in your home. Failure to comply with this rule can lead to erroneous switching on of the system due to inductive currents in the wires. Work algorithm. The controller provides automatic lighting of stairs with 4 to 26 steps with one entrance and exit. In standby mode, the first step and the last step are on in low brightness mode, or you can turn them off. The brightness of the on-duty steps can be adjusted from 0 to 100% The entrance and exit can be equipped with a sensor suitable for your ladder and its configuration and (or) a switch button (not included). When triggered, the controller will start smooth and sequential activation in the direction from the triggered sensor (or button) to the opposite one. You can adjust the turn-on speed, and the overall brightness of all steps. If the sensor on the other side is triggered, the controller will start switching on the steps in the opposite direction.  After all steps are fully enabled, the controller waits for the time you specified before switching off. This time can be set in 5 second increments. The minimum waiting time is 5 seconds. If during this time at least one sensor works again (someone re-enters the stairs), the timer will restart and the waiting time will start again.  After the specified time has elapsed, the controller will smoothly and sequentially turn off the steps in the opposite direction. The switch-off speed is always 2 times higher than the switch-on speed in order to save energy, since after a person leaves the stairs there is no need to light the stairs. Description of the operation of the light sensor.   A digital light level sensor can be connected to the controller, which will allow you to turn off the system during daylight hours (day / night mode). The light level is adjusted by the user at will using a trimming resistor on the sensor. Unlike the younger model of the SS-26 controller, it does not matter where you install the sensor, the light from the steps no longer interferes with it. Now the sensor stops being interrogated after the start of switching on and will not lead to turning off the steps after the start of switching it on. Now you can install the sensor directly on the stairs. This is made possible by a new algorithm and a more powerful controller processor. Read in detail in the user manual and watch the video tutorial on connection and setup. Comparative table of controllers for stair lighting.       SmartStairway SS-26   SmartStairway SS-26 LCD   SmartStairway SS-26 Pro   SmartStairway  SS-281X Wi-Fi  Central processor  ATmega168, 8 mHz, SRAM 1kBt, EEPROM 512Bt, RAM 16kBt  ATmega328, 16mHz, SRAM 1kBt, EEPROM 512Bt, RAM 32kBt  ATmega328p, 16mHz, SRAM 1kBt, EEPROM 512Bt, RAM 32kBt XTensa LX6 32-bit, 2 core, 240mHz, 448KB ROM 520KB SRAM  Wireless connection -   -  - + WiFi: 802.11 Supply voltage  DC 12-24V DC 12-24V DC 12-24V DC 5-12V  Settings interface LED on the case. 3 buttons, indication using the first 4 steps  3 buttons, display indication, demo.   3 buttons, display indication, demo.   With the of the WEB-interface of the device connected to the controller with the of the WEB-browser. LED on the case. 2 touch buttons for forcing the stairs on/off.  Number of steps from the 4th to the 26th  from the 4th to the 26th  from the 4th to the 26th  to the 32nd   Type of light source LED tape, LED lights. That PWM dimming  LED tape, LED lights. That  PWM dimming   LED tape, LED lights. That  PWM dimming   Addressable LED RGB SMART tape of Neopixe, WS2811, WS2812 and similar types Maximum load power for 1 channel 0.4A (4.8W at 12V and 9.6W at 24V light sources) 0.4A (4.8W at 12V and 9.6W at 24V light sources) 5A (60W at 12V and 120W at 24V light sources) The parameter is not valid. Protection of digital inputs from connection errors. - Current protection Current protection in + ESD protection against electrostatic discharge. Current protection  Color of light Monochrome. (it is possible to use RGB only under the conditions of using an additional amplifier with a built-in RGB controller SmartStairway APS21-RGB) Monochrome.  (it is possible to use RGB only under the conditions of using an additional amplifier with a built-in RGB controller SmartStairway APS21-RGB)  Monochrome.  (it is possible to use RGB only under the conditions of using an additional amplifier with a built-in RGB controller SmartStairway APS21-RGB)  Multi-color RGB SMART where the color and brightness of each individual LED or module of 3 LEDs is set (depending on the tape). Type of compatible sensors PIR - pyroelectric PNP (logical 1 when motion is detected) Ultrasonic - ultrasonic distance meters. Microwave - PNP movement sensors based on the Doppler effect PIR - pyroelectric PNP (logical 1 when motion is detected) Ultrasonic - ultrasonic distance meters. Microwave - PNP movement sensors based on the Doppler effect IR-infrared NPN distance sensors on the reflected beam with logic 0 when obstacles are detected PIR - pyroelectric PNP (logical 1 when motion is detected) Ultrasonic - ultrasonic distance meters. Microwave - PNP movement sensors based on the Doppler effect IR-infrared NPN distance sensors on the reflected beam with logic 0 when obstacles are detected    PIR - pyroelectric PNP (logical 1 when motion is detected) Ultrasonic - ultrasonic distance meters. Microwave - PNP movement sensors based on the Doppler effect  Indoor light level sensor compatible. Yes . Day/night mode (switching off when the light level is above the set threshold. Requires installing the sensor so that the light from the stairs does not fall on it) Yes . Day/night mode (switching off when the light level is above the set threshold. The light level sensor can be installed directly on the stairs, when the light on the stairs is turned on, the sensor is blocked and does not lead to unwanted shutdown of the stairs)  Yes . Day/night mode (switching off when the light level is above the set threshold. The light level sensor can be installed directly on the stairs, when the light on the stairs is turned on, the sensor is blocked and does not lead to unwanted shutdown of the stairs)   Yes.  Day/night mode and adaptive mode. It can change the brightness of the light on the steps depending on the level of illumination, which prevents blinding in the dark. All parameters are adjusted according to the user's wishes.   Illumination of the first and last steps in standby mode. Yes. Brightness is adjustable from 0 to 100%.  Yes. Brightness is adjustable from 0 to 100%.  Yes. Brightness is adjustable from 0 to 100%.  Yes. There are static and many dynamic modes of lighting the stairs while waiting. Both the first and last steps, as well as the extreme LEDs of each step, or signal dynamic lights on the steps in animated modes can be turned on.  Setting the general brightness of the stairs.  Yes. From 20% to 100%  Yes. From 20% to 100%  Yes. From 20% to 100%  Yes. Also, thanks to the adaptive mode, it can automatically change depending on the level of illumination in the room.      Contact us We can be contacted at any time through eBay messages if you have any questions, comments or product requests. We will respond to you within 24 hours! We encourage our customers to contact us with any questions or concerns! We'd like to be sure you are completely satisfied with your purchase. Payment Shipping The dispatch of the goods is carried out within 1-5 days by a small registered package by airmail with tracking. The parcel may not be tracked in  Ireland, the United Kingdom and Germany. This is due to the fact that the abovementioned countries do not track small registered packets. You can get information about the location of the parcel in these countries by submitting a request to the local postal service Delivery time takes from 14 to 45 working days, depending on the country. Most countries in Europe, the United States delivery an average of 14 to 35 days. The countries of Asia, Middle East, Africa, Central and South America averaged from 21 to 45 days. *** The declared customs value of the goods cannot be reduced, as this violates eBay rules and laws. Depending on the customs laws of your country, you may have to pay additional taxes and customs fees. For details on customs limits and duties, check with your customs office. According to eBay rules, the buyer must pay all additional taxes and duties required by the law of your country. Please consider this when placing your order. Shipping to Australia and Canada is only possible with UPS. In this case, the  buyer must pay all statutory taxes and fees. UPS may require a Buyer ID number for this. Be sure to include your contact phone number. International economy shipping is carried out by small registered airmail package "Registered Mail® International". In many countries around the world, this type of delivery requires hand-to-hand delivery and may require a signature. Please consider this when purchasing. Parcels can be stored from 14 days to 2 months at the local post office, after which they can be disposed of or sent back. Parcel retention time after unsuccessful delivery depends on the regulations of the postal service of your country. Check with your local post office for details. The recipient can usually extend the shelf life of the parcel, request re-delivery or readdressing. To do this, contact your local postal service.   Return and warranty conditions Return of goods is accepted within 30 calendar days. Items must be returned in original condition with tags if applicable within 30 days of purchase. Return shipping at the same time pays the buyer.In case of product failure during the warranty period, free repair of the product is possible. The cost of delivery is paid by the buyer. Damage caused by incorrect operation, connection or violation of technical requirements are not warranty cases. Such repairs are carried out on a paid basis. Return of goods damaged as a result of violations of the rules of connection and operation is not accepted.

Amplifier repair service

Compro Technology 1MP03PV6KE1 Video Mate TV PVR / FM PAl BG + DK adapter.  Was in operation, fully working, tested.

Aluminum remote controller for the Flux amp

Aluminum remote controller for the Flux amp

Power supply for signage repair. The customer's power supply unit has failed, this is the repair parts for the repair period guaranteed

This Schecter Avenger A7 Floyd Rose electric guitar is perfect for any musician looking for a high-quality instrument. With its unique metallic black body color, this guitar is sure to stand out on stage. The guitar features a Floyd Rose tremolo system for precise tuning and a smooth playing experience. Comes with a gig bag and will be packaged appropriately.

Digitech GNX4 Guitar Multi Effects Pedal Board  with Pro Tracks Plus Software • Tested - Functional • Good Condition • Has normal wear • Includes manuals • See Specifications below • Please see images Comprehensive guitar amplifier and speaker modeling/effects processor USB port and included software allow the GNX4 to function as a 24-bit audio/MIDI interface for computer recording Three AudioDNA DSP engines for extensive programming Built-in 8-track recorder can record whole song arrangements, including vocals via an XLR input Microphone input supports condenser microphones via phantom power and includes a 20dB pad Built-in General MIDI drum machine Rugged steel, floor-form housing with included expression pedal and seven foot switches The foot switches are used to select presets, access the tuner, turn individual effects on and off, change amplifier channels, or bypass the GNX4 Compact Flash memory card interface Built-in tuner Form Floor processor Type Multi-effects Presets 80 User Memory 80 Controls and Indicators 7 x Foot Switches 1 x Expression Pedal 5 x Rotary Controls 20 x Effect Select/Status/Mode Buttons 1 x Data Wheel 13 x Matrix LEDs 10 Character Alpha/Numeric LED Display Inputs 1 x XLR Microphone 1 x 1/4" TS phone 2 x 1/4" TRS phone 1 x MIDI 1 x 1/4" TS Optional Footswitch 1 x USB (shared with output) Outputs 2 x XLR 2 x 1/4" TRS phone 1 x 1/4" TRS phone (Headphone) 1 x MIDI 1 x USB Digital Connectivity USB Dimensions 21 1/2" x 9" x 3 1/4"" Weight 10 lbs Specialties Compact Flash slot for optional Type I Compact Flash memory card to increase the available recording time and transfer files to and from a computer

Transistors are new Kt819VM-2 pcs Kt827V-2 pcs GT806G-4 pcs In great condition.

Feel the full-range dynamics and control. Specially engineered to deal with most hard to drive headphones on market. Just forget about the problem with difficult loads in terms of impedance or power consumption. A mode with a supply voltage of 80 volts of output stage all that features are providing clean transmission for signal up to 12 Watt on 32 Ohm load of output power.

Feel the full-range dynamics and control. Specially engineered to deal with most hard to drive headphones on market. Just forget about the problem with difficult loads in terms of impedance or power consumption. A mode with a supply voltage of 80 volts of output stage all that features are providing clean transmission for signal up to 12 Watt on 32 Ohm load of output power.

Feel the full-range dynamics and control. Specially engineered to deal with most hard to drive headphones on market. Just forget about the problem with difficult loads in terms of impedance or power consumption. A mode with a supply voltage of 80 volts of output stage all that features are providing clean transmission for signal up to 12 Watt on 32 Ohm load of output power.

The new automation model PERVAK 4.0 is a new device with expanded functionality. 1. The built-in barometer automatically adjusts the set temperature shelf for product selection, depending on changes in atmospheric pressure, which allows, during the rectification process, which can last more than ten hours, to set the minimum size of the shelf to improve the quality of the product.              When the atmospheric pressure changes during the rectification process, the automation will correct the temperature shelf in accordance with the pressure changes.   2. Tailings extraction valve. An additional valve allows you to select tail fractions during the rectification process using a tails collection unit. (The tailings selection unit is not included in the automation delivery set) Accordingly, the tailings selection valve installed on the lower selection unit will select the tailing fractions (unload the column or MMC) at a speed specified by the operator when a certain temperature in the cube is reached. You can, for example, start collecting tailings at a rate of 200 ml per hour when the temperature in the cube reaches 90C. In order for the tailings selection valve not to work, the tailings selection temperature must be left at “100” 3. Decrement of the king. Reducing the amount of selection when the temperature in the drawer increases (green sensor) by a given amount. This feature is especially important for tray column distillations, as we know that start-stop operation is not optimal when operating on tray columns. After switching from the head selection mode to the body selection mode, the automation records the temperature of the green sensor and, as the temperature rises by every degree, reduces the selection speed by the required amount. In order not to reduce the selection speed, it is necessary to leave the value “Decrease by side” at “0” 4. Ability to change the direction of heads. We have added a “Heads down” or “Heads to the side” switch, which allows you to change the direction of the selection of heads and also allows you to install a head valve on the hanging parrot. Then, when selecting heads, the valve will be open and the heads will flow down, after switching to body selection, the valve will close and the parrot’s filling field, the body will be taken into the body selection tank. 5. Emergency stop button on the main screen. Also in model 4.0 all the functionality of the automation model of model 2.6 is implemented   Liters per hour - the ability to select in % or convert to the usual liters per hour.   Two working powers of the head + body - now you can set different heating power for the selection of heads and for the selection of the body.   Selection of goals by level/time. Knowing the number of heads and the selection speed, you can select heads either by a level sensor or by a given time.   Temperature graphs - Ability to monitor temperatures and system logs during any process.   Ability to receive Push notifications on your smartphone. To activate the Function, you need to download a new version of the application for iOS or Android, having previously deleted the old one.   Checking valves - In the settings, you can click the check valves button and check the functionality of all valves by running the test mode.   We swapped the heads and body - now in the head/body switching unit the heads flow downwards, the body to the side.   Added the ability to change the direction of HEAD-BODY selection, now heads can be directed either to the side or down.   We added a kilowatt hour counter, now in the Data-Statistics tab you can see how much electricity the system has consumed in real time.   Pervak 4.0 automation with a web interface is a new generation controller. With the of automation for rectification, you can fully automate the processes of distilling mash into raw, automation of rectification, automation of brewing, automation of mashing. Automation for rectification allows you to control all processes remotely, from a smartphone or computer, using an application or web interface.   Basic operating modes of automation for moonshine brewing:   - Distillation (processing mash into raw in potstill mode)   - Rectification   - Mashing or brewing beer (up to 10 temperature pauses and cooling with a chiller)   - In manual mode, automatic rectification can be used to control the following processes: Heating element power adjustment, Precise temperature maintenance in PID mode, Emergency stop of the system due to water flow, cube overheating and TSA temperature increase, Precise control of the selection speed and control of selection valves, heads and supply of cooling water, Temperature control in the cube, drawer, selection unit and TSA.   Automation for distillation, rectification and mashing allows you to fully automate the process of distilling mash into raw, the rectification process, the process of brewing beer and mashing grains for whiskey and bourbon.   The Wi-Fi module provides you with complete control and management of all automatic distillation processes. All you need is to connect the controller to a stable source of Internet connection and have access to the network on your smartphone.   Information synchronization time is 15 seconds.   When using the Pervak Application browser, you can receive push notifications about automation processes and errors.   The automation is designed to control heating elements or electric stoves with a power of up to 3.5 kW, which is quite enough for most processes carried out at home.   For ease of use, the controller is equipped with a DIN rail for wall mounting.   The delivery set of Automation for Distillation, Rectification and Mashing with Pervak 4.0 Wi-Fi barometer includes:   Automation with touch screen 1 pc.   Block dimensions Height 70 mm; Width 140 mm; Length 220 mm   Solenoid valve 3 pcs. Cable length 2 meters   Temperature sensor 4 pcs. Cable length 2 meters   Level sensor 1 pc. Cable length 2 meters   Tee for head valve for 10 mm hose. 1 PC.   Tee for water temperature sensor 1 pc.   Quick release 0.25 for 10 mm hose 6 pcs.   Nipple for thermometer sensor 1 pc.   Attention, Paper instructions are not included in the package, instructions are available in the “instructions” section of this product!   Operating modes   In Manual mode you can:   - manually turn on and off the heating element or electric stove   - adjust the power of the heating element   - maintain accurate temperature in PID control mode   - open and close the water supply valve   - open and close the extraction valve   -set temperature, hysteresis and sampling rate as a percentage   - set the Emergency mode for water, level and cube temperature   In Distillation mode you can set:   - acceleration power   - selection power   - temperature of transition from maximum power to extraction   - stop temperature   - water accident temperature   In Rectification mode you can specify:   - acceleration power   - work power   - operating temperature (in the drawer)   - stop temperature per cube   - temperature of head selection (set automatically after stabilization of the column)   - goal selection hysteresis   - body selection hysteresis   - speed of goal selection   - body selection speed   - water accident temperature   - column stabilization time   - number of start-stop cycles   - reducing the selection, upon reaching a certain temperature in the cube, to maintain the reflux ratio. In the Mashing mode you can:   - indicate the number of temperature pauses   - turn cooking on or off   - turn cooling on or off   - for each pause you can select the temperature, hysteresis and pause time   - select boiling temperature   - set the power of the heating element   - select cooking time   - indicate temperature and cooling hysteresis   Additionally, as options for Pervak 4.0 automation with a web interface, you can order:   - Adapter   - Nipple 10 mm     - Long temperature sensor for mashing

3 Led bolbs SET

Dimmer with remote for LED neon sign

This item can be sold elsewhere, so please contact me first before you buy! FREE SHIPPING  WORLDWIDE Fully assembled Watch With Nixie Tubes  ITT5853 / NL-5870ST made in England. Iit's only completely new electronic components with highest quality soldering. Dimensions of the case from the outside - h 20 mm, d 50 mm. Charging voltage 5V 1A from standard USB power adapter. Time indication and setting mode is done by one button. Watch was tested and showed time more than 500 indications per one charge, or one month standby time. Display mode - 24 hours with the effect of busting the cathode. Battery charge has two modes: - light from red LEDs - charging process; - light from blue LEDs - end of charge. if the tubes light is out - the battery is completely discharged, charge the battery. Case for this watch was printed at LCD 3D printer, material - resin tm. Resione K+ Black like ABS - improved formula, no fluorescent effect in sunlight. This lot includes: 1pc fully assembled watch with USB cabel. This watch is almost entirely handmade. By making a purchase you will support the further development of this project. Thank you very much in advance for the deal! You  can  take a look  video, how this watch look like  here: youtu.be/xgnIMUfK3g8 Watch other videos on my channel. Attention: risk of high voltage shock - be extremely careful, because the operating voltage of the nixie tubes is 160...180 volts.  Even when they are not working, high-voltage circuits can store a fairly accumulate high voltage .  Protect from dust and water ingress.   Attention - depending on the taxation on state of USA or the regions of Europe,  can be additional tax charged when you pay,  if you see an additional tax - I cannot influence this due to your local laws.

Nixie thermometer in mid century style assembled using vintage tubes IN-16. The base is made out of eco friendly natural solid apricot-tree. The base is polished and smoothed by hands, coated Danish oil. USB power supply (USB port 3.0 or adapter with USB output) with current not less than 500mA. The thermometer can connect to your home network via WiFi and get the outdoor temperature of your city (or any other city on Earth). To do this, all you need to do is to register at https://openweathermap.org and get an api key. The thermometer can display the temperature in both Fahrenheit and Celsius. The accuracy of room temperature measurement can be ± 2 degrees. This is not an accurate measuring device, but rather a product for interior decoration. Features: - Display the temperature in both Fahrenheit and Celsius - Shows the temperature in the room and outdoors - Сonnect to your home network via WiFi - Temperature sensor DHT20 - USB power supply (USB port 3.0 or adapter with USB output) with current not less than 500mA. Link to manual: https://bit.ly/3utFH6r Warning! Please after delivering keep devices in a room at least for 2 hours before turn it on. BOX CONTAINS: 1 x Nixie thermometer 1 x USB cable Type-C

Nixie tube clock in mid century style assembled using tubes IN-14. The clock case is made out of eco friendly natural solid apricot-tree. The case is polished and smoothed by hands, coated Danish oil. The drawing on the wood is absolutely unique and you can be sure that you will not find another watch exactly like it anywhere else. This is a wonderful gift for a Father's Day, birthday, housewarming, anniversary or other event. Features: - Time format: 12/24 time display - Indication: Hours, Minutes, Day, Month (2 modes) - Show date switched ON/OFF - Effects preset Slot Machine every 10 minutes (preventing cathode poisoning) - Adjustable amber backlight - Lithium battery backup - Simple time setting using three buttons - Power adapter: input AC 100..240V, output DC 9..12V (US, EU, UK or AU socket) All the bulbs are in sockets. It simplify the repair in case any of the bulbs fail. Warning! Please after delivering keep devices in a room at least for 2 hours before turn it on. ITEM DETAILS: Weight: 0.9 lb (0.4 kg) Width: 5.6" (14 cm) Length: 2,4" (6 cm) Height: 3.6" (9 cm) BOX CONTAINS: 1 x Nixie clock 1 x Power adapter

This Nixie clock assembled using vintage Soviet tubes IN-4 (1970-80s). The case is made of metal (aluminum) tube. Powder painting, black color. - Time format: 12/24 time display - Indication: Hours, Minutes, Day, Month (2 modes) - Show date switched ON/OFF - Effects preset Slot Machine every 10 minutess (preventing cathode poisoning) - Adjustable blue backlight - Lithium battery backup - Simple time setting using three buttons - Power adapter: input AC 100..240V, output DC 12V (US or EU or UK socket) Warning! Please after delivering keep devices in a room at least for 2 hours before turn it on. ITEM DETAILS: Weight: 0.5 kg Width: 8" (20 cm) Length: 2,4" (6 cm) Height: 2,4" (6 cm) BOX CONTAINS: 1 x Nixie clock 1 x Power adapter

Nixie thermometer in mid century style assembled using vintage Soviet tubes IN-16. The base is made out of eco friendly natural solid Robinia (Robinia pseudoacacia) wood. The base is polished and smoothed by hands, coated Danish oil. USB power supply (USB port 3.0 or adapter with USB output) with current not less than 500mA. The thermometer can connect to your home network via WiFi and get the outdoor temperature of your city (or any other city on Earth). To do this, all you need to do is to register at https://openweathermap.org and get an api key. The thermometer can display the temperature in both Fahrenheit and Celsius. The accuracy of room temperature measurement can be ± 2 degrees. This is not an accurate measuring device, but rather a product for interior decoration. Features: - Display the temperature in both Fahrenheit and Celsius - Shows the temperature in the room and outdoors - Сonnect to your home network via WiFi - Temperature sensor DHT20 - USB power supply (USB port 3.0 or adapter with USB output) with current not less than 500mA. Link to manual: https://bit.ly/3utFH6r Warning! Please after delivering keep devices in a room at least for 2 hours before turn it on. BOX CONTAINS: 1 x Nixie thermometer 1 x USB cable Type-C

Nixie tube clock in mid century style assembled using vintage tubes IN-14. The clock case is made out of eco friendly natural solid ash. The case is polished and smoothed by hands, coated wood stain. Full color backlight with wireless radio remote control. You can order personalization for a wonderful gift for a birthday, wedding, anniversary or other event. Options for inscriptions can be seen in the last photo. Features: - Time format: 12/24 time display - Indication: Hours, Minutes, Day, Month (2 modes) - Show date switched ON/OFF - Effects preset Slot Machine every 10 minutes (preventing cathode poisoning) - Adjustable full color backlight - Lithium battery backup - Simple time setting using three buttons - Power adapter: input AC 100..240V, output DC 9..12V (US, EU or UK socket). All the lamps are in sockets. It simplify the repair in case any of the lamps burns out. Warning! Please after delivering keep devices in a room at least for 2 hours before turn it on. ITEM DETAILS: Weight: 1 lb (0.4 kg) Width: 3.1" (8 cm) Length: 7.1" (18 cm) Height: 3.5" (9 cm) BOX CONTAINS: 1 x Nixie tube clock 1 x Power adapter

Nixie tube clock in mid century style assembled using tubes IN-14. The clock case is made out of eco friendly natural solid ash. The case is polished and smoothed by hands, coated wood stain. You can order personalization for a wonderful gift for a Father's Day, birthday, housewarming, anniversary or other event. Options for inscriptions can be seen in the last photo. Features: - Time format: 12/24 time display - Indication: Hours, Minutes, Day, Month (2 modes) - Show date switched ON/OFF - Effects preset Slot Machine every 10 minutes (preventing cathode poisoning) - Adjustable orange backlight - Lithium battery backup - Simple time setting using three buttons - Power adapter: input AC 100..240V, output DC 9..12V (US, EU, UK or AU socket) - User's manual. All the bulbs are in sockets. It simplify the repair in case any of the bulbs fail. Warning! Please after delivering keep devices in a room at least for 2 hours before turn it on. ITEM DETAILS: Weight: 0.9 lb (0.4 kg) Width: 5.6" (14 cm) Length: 2,4" (6 cm) Height: 3.6" (9 cm) BOX CONTAINS: 1 x Nixie clock 1 x Power adapter

Nixie tube clock assembled using vintage Soviet tubes IN-14. The clock case created from acrylic (plexiglas). Features: - Time format: 12/24 time display - Indication: Hours, Minutes, Day, Month (2 modes) - Effects preset Slot Machine every 10 minutes (preventing cathode poisoning) - Adjustable blue backlight - Lithium battery backup - Simple time setting using three buttons - Power adapter: input AC 100..240V, output DC 9..12V (US, EU or UK socket) - Printed manual Warning! Please after delivering keep devices in a room at least for 2 hours before turn it on. ITEM DETAILS: Weight: 0,7 lb (0.3 kg) Width: 2,4" (6 cm) Length: 6.4" (16 cm) Height: 3,6" (9 cm) BOX CONTAINS: 1 x Nixie clock 1 x Power adapter

Nixie tube clock assembled using vintage tubes IN-12. The clock case created from acrylic (plexiglas). Features: - Time format: 12/24 time display - Indication: Hours, Minutes, Day, Month (2 modes) - Effects preset Slot Machine every 10 minutes (preventing cathode poisoning) - Adjustable green backlight - Lithium battery backup - Simple time setting using three buttons - Power adapter: input AC 100..240V, output DC 9..12V (US, EU or UK socket) Warning! Please after delivering keep devices in a room at least for 2 hours before turn it on. ITEM DETAILS: Weight: 1 lb (0.4 kg) Width: 2.8" (7 cm) Length: 5.5" (14 cm) Height: 2.8" (7 cm) BOX CONTAINS: 1 x Nixie clock 1 x Power adapter

Nixie tube clock assembled using vintage Soviet tubes IN-14. The clock case is made out of eco friendly natural solid walnut + epoxy resin, polished and smoothed by hands, coated Danish oil. Full color backlight with keys control. You can order personalization for a wonderful gift for a Father's Day, birthday, housewarming, anniversary or other event. Features: - Time format: 12/24 time display - Indication: Hours, Minutes, Day, Month (2 modes) - Show date switched ON/OFF - Effects preset Slot Machine every 10 minutes (preventing cathode poisoning) - Adjustable multicolor backlight - Lithium battery backup - Simple time setting using three buttons - Power adapter: input AC 100..240V, output DC 9..12V (US, EU or UK socket) All the lamps are in sockets. It simplify the repair in case any of the lamps fail. Warning! Please after delivering keep devices in a room at least for 2 hours before turn it on. ITEM DETAILS: Weight: 1 lb (0.4 kg) Width: 3.1" (8 cm) Length: 7.1" (18 cm) Height: 3.1" (8 cm) BOX CONTAINS: 1 x Nixie clock 1 x Power adapter

This clock is assembled using vintage nixie tubes that were produced in the 1970s...1980s, and combines modern electronics with the warm glow of the past. The clock case is made out of natural solid oak, polished and smoothed by hands, coated linseed oil. Full color backlight with keys control. This piece will perfectly decorate any interior in the mid-century, loft, industrial or steampunk style. It would also make a great gift for dad and grandpa (especially for fans of electronics). Features: - Time format: 12/24 time display - Indication: Hours, Minutes, Day, Month (2 modes) - Show date switched ON/OFF - Effects preset Slot Machine every 10 minutes (preventing cathode poisoning) - Adjustable multicolor backlight - Lithium battery backup - Simple time setting using three buttons - Power adapter: input AC 100..240V, output DC 9..12V (US, EU or UK socket) All the lamps are in sockets. It simplify the repair in case any of the lamps fail. Warning! Please after delivering keep devices in a room at least for 2 hours before turn it on. ITEM DETAILS: Weight: 1 lb (0.4 kg) Width: 3.1" (8 cm) Length: 7.1" (18 cm) Height: 3.1" (8 cm) BOX CONTAINS: 1 x Nixie clock 1 x Power adapter

This is a beautiful handmade item. This table clock is made on neon retro tubes (nixie tubes). When turned on, the clock creates a Wi-Fi access point or connects to your home network via Wi-Fi and can synchronize the time via the internet. The clock is controlled and configured from a smartphone or computer using a web interface. The clock uses Nixie indicators Z574M (Germany) and the case is made of natural oak wood. Initial setting: - Turn on the clock - Enable Wi-Fi on your smartphone and connect to "NixieClock" Wi-Fi access point - In the browser, enter the address 192.168.4.1 - In the "Time setting" section, set the current time - In the "Clock setting" section, set the time zone and other parameters - In the "WiFi setting" section, set the name and password of your network (if necessary) - In the "LED setting" section, you can set the color and brightness of the LED backlight Enjoy! Features: - Time format: 12/24 time display - Effects preset Slot Machine every 10 minutes (preventing cathode poisoning) - Adjustable multicolor backlight - Lithium battery backup - Power adapter: input AC 100..240V, output DC 9..12V (US, EU or UK socket) Warning! Please after delivering keep devices in a room at least for 2 hours before turn it on. BOX CONTAINS: 1 x Nixie clock 1 x Power adapter

Nixie tube clock in mid century style assembled using Soviet tubes IN-14. The clock case is made out of eco friendly natural solid oak. The case is polished and smoothed by hands, coated Danish oil. This is a wonderful gift for a Father's Day, birthday, housewarming, anniversary or other event. Features: - Time format: 12/24 time display - Indication: Hours, Minutes, Day, Month (2 modes) - Show date switched ON/OFF - Effects preset Slot Machine every 10 minutes (preventing cathode poisoning) - Adjustable orange backlight - Lithium battery backup - Simple time setting using three buttons - Power adapter: input AC 100..240V, output DC 9..12V (US, EU, UK or AU socket) All the tubes are in sockets. It simplify the repair in case any of the tubes fail. Warning! Please after delivering keep devices in a room at least for 2 hours before turn it on. ITEM DETAILS: Weight: 0.9 lb (0.4 kg) Width: 5.6" (14 cm) Length: 2,4" (6 cm) Height: 3.6" (9 cm) BOX CONTAINS: 1 x Nixie clock 1 x Power adapter

Led lamp 7 W, SDAL-R 07

Looking for a high-quality  pulse metal detector  that can handle any task? Look no further than the  Clone PI W  with High-Quality Assembly - Brand New! This modern, microprocessor-based device is designed to search for metal objects in a wide variety of environments, including the ground, sand, walls, dense grass, and more. With interchangeable sensors of different sizes, you can easily customize your search to meet your specific needs. ( Replacement sensors are not included! ) This unit features a sleek black panel color , firmware 1.2.2m, and includes mating connectors to the sensor. The cases are  D110A , and the  battery 18650 is not included . The  maximum depth  of detection of objects is impressive, with a ring sensor (diameter 19cm) able to detect a coin with a  diameter of 25mm   up to 30cm  away, and a helmet  up to 60cm  away. The maximum depth of  up to 150cm .  With a depth loop probe (1,2х1,2m),  Helmet - up to 140cm ,  steel barrel 200l  -  up to 200cm,   the maximum depth is  up to 300cm ! Indications are provided through  visual LED  and  audio multitonal alerts , while the device operates in  static search  mode. With a fully charged battery, continuous operation time can last  up to 15 hours . Please note that the operating conditions include an air temperature range of -10...+50ºС, atmospheric pressure of 710...800 mm Hg, and relative humidity up to 95% at temperature +25ºС. It is crucial to avoid operating the unit with the cover removed or with damaged insulation of the sensor cable. This pulse metal detector is based on the principle of excitation of pulse eddy currents in the metal object and measurement of the secondary electromagnetic field which induces these currents. With the built-in microprocessor, the device analyzes this over-radiated signal and produces the corresponding indication of the detected object. Shipping times  can range from 2 weeks to 45 days depending on logistics. Please note that the current situation may cause difficulties, but parcels are still being delivered. Get your hands on the Clone PI W with High-Quality Assembly - Brand New today!

Ready-made board of the metal detector Pirate. The size of the board 3/7cm. Speaker included. Working, tested boards. The Pirat metal detector is one of the most famous because of its simplicity and quite good characteristics.  This device is able to pick up coins under the ground at a distance of 15-20 cm, large metal objects - up to 120 cm. Tuning of the Pirate metal detector A properly assembled metal detector does not need fine tuning, but for fine tuning there are two variable resistors R12 and R13 in the circuit. To tune it, turn R12 and R13 until you get rare clicks in the speaker. Before tuning, turn on the metal detector and wait 10-20 seconds. Move all metal objects away from the search coil. Specifications Coin detection depth, to 20 - 22 cm Depth of detection of large objects, 100 - 120 cm Supply voltage, 9 - 14 V Current consumption, 60 - 70 mA Impulse current consumption, 1 - 2 A Board dimensions, 45 X 52 mm

Audio tubes for amplifiers used

Used in good working order Specifications: Frequency range: 3150-20000 Hz Frequency response unevenness: 14 dB Sensitivity: 90 dB Operating power: 2W Harmonic distortion in the range 4000-10000 Hz: 3% Resistance: 8 ohms Nameplate power: 3 W Long-term power: 3W Short-term power: 6 W Main resonance frequency: 1200 – 2000 Hz

Microchips for audio diy projects 

Old analague synthesiser 

Precision power supply unit for tube amplifiers and equalizers, AC to DC, 220/110V, 2U rack mountable.