60 MHz Power Gain Test (CB5449E)

We find this circuit in a 1980s documentation. The integrated circuit used is unusual today. The power supply is not symmetrical.

Instrumentation Amplifier (CB782E)
This circuit was found in a Texas Instruments handbook about operational amplifier. It has a very...
Adapter for testing transistors (CB3905E)
The purpose of this circuit is to enable testing of transistors using a common multimeter. With the...
Overtone Crystal Oscillator (CB6184E)
This circuit was found on an 80's Ham Radio. The transistor admits equivalent. The circuit can...