Electronics & Circuitry

Ammeter voltmeter M2020 in excellent condition! 1984... Mirror scale, etc. Connoisseurs, solid and reliable precision instrument. Excellent condition! Checked.

Оригінальний жорсткий диск у відмінному стані. Дивіться фото.

Оригінальний жорсткий диск у відмінному стані. Дивіться фото.

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=

Matched pair of original russian high grade military tubes 6ZH1P-EV. Popular tubes, replacement for EF95, 6AK5,6J1. Tested by precision tubetester L3-3. The parameters are measured at Ua = Ug2 = 121V , Rk = 200 Ohm  Grid in tubes contains gold and platinum. long life more then 5000h. Pull up from big factory box. "Voschod" plant 1991.

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.