Push pull amplifier (CB21941E)

Using a pair of CK722s, this booster step of a few milliwatts of power was obtained in a 1960 Gernsback publication.

High Frequency Collpits Oscillator LT1190 (CB4923E)
This circuit was found on an application note from Linear Technology of the 1990s. The source must...
Single Pump Control (CB6272E)
Using only one integrated circuit this control was found in an 80's Electronic Engineering. The circuit...
100 kHz XTAL Oscillator (CB12064E)
The transistor in this circuit can be the BC558 and the capacitors must be ceramic. Crystals from...