Charger protection relay (CB26312E)

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

Computer power monitor (CB9324E)
This circuit was obtained in an Electronics Now of the 90s. The circuit monitors the DIN connector of...
Half wave dimmer (CB7204E)
Found in a 1965 Motorola documentation, this circuit uses a neon lamp as a trigger element. The SCR...
Multi zener (CIR22156E)
The outputs of each switch position are determined by the zener voltage plus the drive voltage of each...