Found in a 1968 EEE, this switch controls a high-power load from an audio signal. The current is determined by the type of SCR.
Suggested by American documentation from the 90s, this circuit has separate controls for the...
We found this circuit in a 1977 CMOS oscillators documentation. The power can be sourced with...
This filter, which rejects frequencies around 1 kHz, was found in the August 1993 Electronics Now...