Oscillator HA7210 (CB22402E)

This circuit is from an old documentation and can be used to generate signals in different frequency bands.

Instrumentation linear coupler (CB7422E)
Found in 80's Electronic Engineering, this circuit has a linear response, being indicated for...
Call Sound Amplifier (CB21273E)
Found in an older Radio Electronics, this circuit generates signals that can be used with regular...
Voltoscope (CB10689E)
This circuit was found in a 1966 publication. Its purpose is to identify high voltages by lighting a...