We found this touch control on a Popular Electronics from 1970. The circuit makes use of an integrated of the time. It can be adapted to use modern equivalent components.
This circuit is from a high voltage tube source. It does not include the filament voltage that must...
This circuit is from a documentation for 1976 radio amateurs. We can implement this circuit with...
Found in an American magazine from 1968, this circuit produces pulses free of bounces on its...