This circuit was found in the December 1992 issue of Radio Electronics magazine. The current is a few mA and the maximum input voltage is around 12 V.
This circuit is suitable for testing motor starting capacitors. Capacitors from 2 to 8 uF are...
This traditional crystal radio circuit, but which has a modern version with diode, was found in an...
This filter rejects signals below 300 Hz and signals above 3000 Hz, being used in...