PC capacitance meter CB20545E (CB20545E)

The circuit presented is an interface or shield for capacitance measurement as a PC. We found it in an English documentation from 1996.

Regenerative receiver (CB20513E)
We found this receiver in old documentation. The transistor is made of germanium and the...
Phase Splitter (CB4239E)
From an audio signal, this circuit gets two signals of the same amplitude and opposite phases....
Wien Bridge Oscillator (CB4253E)
This is one of many possible configurations for this type of oscillator that generates sinusoidal...