Found in a 1967 American documentation, this circuit increases the duration of a pulse applied to its input. The circuit is used to drive a relay.
In the original 1992 application, this passive circuit was intended for use in the car. At that...
This 1995 circuit uses an audio amplifier that is no longer common today. However, other...
This circuit is from an 80's documentation. The integrated circuit is from the time and the...