Low consumption monostable relay (CB9163E)

Found in an Elektor from the 90s, this circuit makes use of current components. The input voltage depends on the relay.

MC1454G Amplifier (CB24236E)
The integrated circuit is from the time. This low-power circuit was found in the April 1973 issue...
Class B Low Power Amplifier (CB19069E)
This small amplifier, close to 1 W, was found in a 1963 documentation. The class B circuit uses...
20 mA Current Source (CB13423E)
This source of constant current was obtained in an American documentation of 1973. The transistors can be...