TESLA PMD-60.1 monochrome monitor
Description: Composite monochrome monitor.
Manufacturer: TESLA Orava, k.p. Nižná
Made in year(s): mid- to late 80s
Country of origin: Czechoslovakia
Status: Working… [more]
Description: Composite monochrome monitor.
Manufacturer: TESLA Orava, k.p. Nižná
Made in year(s): mid- to late 80s
Country of origin: Czechoslovakia
Status: Working… [more]
Description: An 8080-based 8-bit computer.
Manufacturer: TESLA Piešťany (later TESLA Bratislava)
Made in year(s): 1983-1989
Country of origin: Czechoslovakia
Status: Working… [more]
Description: Two speed record player with radio.
Manufacturer: TESLA Bratislava, k.p.
Made in year(s): 1983-1985
Country of origin: Czechoslovakia
Status: Working… [more]
Description: A portable black and white TV.
Manufacturer: TESLA Orava, k.p. Nižná
Made in year(s): 1982-1989
Country of origin: Czechoslovakia
Status: Replaced it with a Merkur II… [more]
Description: Two speed, 4-track mono tape recorder.
Manufacturer: TESLA Pardubice
Made in year(s): 1973-1976
Country of origin: Czechoslovakia
Status: Got rid of it… [more]
Description: Two speed, 4-track “Hi-Fi” tape recorder.
Manufacturer: TESLA Přelouč
Made in year(s): 1982-1986
Country of origin: Czechoslovakia
Status: Working, in good condition… [more]
Description: Single speed, 4-track stereo tape recorder.
Manufacturer: TESLA Pardubice
Made in year(s): 1980-1983
Country of origin: Czechoslovakia
Status: Working, in good condition… [more]
To go along with flyback drivers, X-rays and other high voltage stuff, I have decided to build myself a Tesla coil. Because I live in an apartment building though, there would be no place to accommodate and run monstrous coil designs, not mentioning interference, so that is the reason why I’ve opted for small and sweet portable setups like this one is.… [more]
Tried searching the keyword “geiger counter” on Google, or even better, on YouTube? Now, how many of them contained a multitude of transistors, analog microchips or even digital microprocessors, and no shielding at all? Well, whatever the count is, a majority of them – if not all – are going to fail miserably, due to a huge electromagnetic pulse, when the… [more]
This very simple circuit can be used to verify the proper functionality of each cathodes in a Nixie tube, which was the predecessor of the solid-state LED 7-segment display, back in the 1960s and early 70s. The main anode voltage is obtained from a simple, battery-powered flyback inverter with just enough voltage to strike the glow discharge, and an adjustable resistor current limiter… [more]
Description: Czechoslovak army Geiger counter.
Manufacturer: Rudi Čajavec and TESLA
Made in year(s): late 60s-mid 80s; 1969 is mine model
Country of origin: Yugoslavia & Czechoslovakia
Status: Working, last calibration Feb 2006… [more]
Back in 2008 before starting with high voltage, I have made numerous experiments with flyback transformers and with simple single-transistor drivers, most of these were undocumented. However, this was one of my very first high voltage circuits and my first -electronic- circuits in general, which were marked with some success… [more]
With a predictable demise of CRT screens that’ve been phased out of production since the late 2000s, the owners of vintage TVs, monitors or other displaying equipment, kept in a condition that’s just too good to be thrown out, will eventually bump into a problem concerning each and every CRT – or any vacuum tube in general – of decreased cathode emission, … [more]
Some five years ago, I had a RepRap 3D printer setup running the Marlin firmware on an Arduino Mega 2560 board. With that long gone, I was thinking about some other projects I could try on it: a floppy drive controller, and perhaps a clock, with some neon indicators I have managed to salvage from a 1970s benchtop multimeter of Czechoslovak provenience. Even though I have to admit that it… [more]