This circuit was found in an Elektor from the 90s. Next to the circuit we have a table with the delays obtained when the circuit is connected according to the positions of the selector switches.
The circuit below was suggested by the Motorola Linear Databook of 1990. The component used is...
The circuit of the figure consists of a motor timer that can delay drives for up to 15 minutes....
We found this circuit in a 1960 Sylvania transistor manual. The relay can be 12 V and C1...