Found in a Hands On Electronics from the 80's, this circuit activates a relay with alternating touches on the push-button. The relay depends on the supply voltage.
This circuit was found in an American documentation from 1968. The configuration can be adapted to...
This circuit is interrupted when S1 is pressed. The frequency is given by C1, which can be...
The circuit presented is from the 1977’s Linear Integrated Circuits and MOSFETs from RCA. The...