Voltage Amplifier (CB21857E)

This amplifier with a 9 MHz passband and 10 voltage gain with two transistors was found in Ferranti's Transistor Manual 1974.

Nicad Charger (CB13544E)
This circuit is intended for charging 12 V Nicad batteries, which corresponds to 10 common...
Zero crossing detector (CB20624E)
This type of circuit, found in American documentation from the 1980s, triggers producing output...
Simple light relay (CB7895E)
This relay without lock uses a general-purpose transistor. The relay is according to the supply....