Common collector stage (CB22226E)

This circuit employs an old germanium transistor. The circuit is from a 1950s publication and uses RC coupling.

Powerful FM Transmitter (CB4330E)
This circuit is from 1989 documentation. It uses the TDA2002 as a modulator and the unusual power...
Simple 555 Timer (CB3982E)
This configuration is suggested by Mullard (Philips) in an old manual of 555 integrated circuits....
CMOS Crystal Oscillator (CB25578E)
The figure shows how to use a CMOS amplifier as a crystal-controlled oscillator. The circuit is...