4060 XTAL Oscillator (CB22401E)

We found this oscillator in an old documentation. The crystal frequency can be different to get other output frequencies.

Water alarm with lock (CB6957E)
Published in an old Popular Electronics, this circuit makes use of components that are still...
Darlington Modulator (CB14800E)
This modulator circuit for transmitters was found in American documentation from 1964. It can be...
Sine wave generator (CB24195E)
This circuit for frequencies from 1Hz to 100 kHz was found in the June 972 Radio Electronics...