Found in a Popular Electronics from the 80's, this circuit makes use of a time integrated to control a relay in a timed way. R2 determines the activation time.
This circuit uses two TTL trigger inverters to generate signals that can be adjusted at R1. The...
The purpose of this circuit is to maintain the liquid level of a reservoir between two values...
This Linear Technology circuit was found in a 1980s documentation. The circuit can swing up to a...