This simple neon lamp oscillator produces a 140 Hz, 40 V peak-to-peak signal. The frequency is given by the capacitor that can have its value changed. Note the high supply voltage.
We found this voltmeter in a 1977 Radio Shack documentation. The integrated circuit can be the...
This circuit with a maximum current of 50 mA was found in the August 1998 issue of Electronics Now magazine....
This circuit was found in the July 1994 issue of Electronics Now magazine. The relay can be rated...