Charger protection relay (CB26312E)

This circuit was obtained from an Elektor magazine from the 90s. The circuit is to protect batteries while charging.

Timer with TAA865 (CB17505E)
The TAA865 integrated circuit used in this 1986 project is no longer common today. The circuit is a...
Amplifiers for small signals (CB7463E
) These two circuits were obtained in a 1977 Radio Handbook. The transistors are from that time,...
3 A regulator MC78T05 (CB14535E)
The circuit shown is from the Motorola Linear Databook of 1990. It is based on the Motorola T...