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.
Published in Radio Electronics magazine in March 1963, this circuit uses 4 transistors of the...
The LM11 operational amplifier is not common today. The circuit was obtained in the Linear...
This project was found in a 1988 documentation. The circuit intermittently activates an aquarium...