| For a nixie-ish kind of project with ZM1050's I need a power supply of around 150V, 20mA. The twist is that is that the polarity must be neg...
cvdo (4)
| Dekatrons are gas filled counting tubes dating from the fifties. For a short period in history, they were used as counters and memory cells...
| Measure vacuum tubes (triodes, pentodes) as they did in the 1950's with a remake of the Tektronix 570 "Characteristic Curve Tracer".
| This Elektor-project from 2010 uses an EM84 magic eye to display the cpu usage of a pc. Great, but it doesn't work any more under Windows 1...