Regenerative receiver (CB20513E)

We found this receiver in old documentation. The transistor is made of germanium and the headphones must be of high impedance.

Unijunction monostable (CB5425E)
This circuit was found in an American 1980s documentation. The transistors admit equivalents and the...
Offset Adjustment Sample and Hold (CB5958E)
We find this circuit in a 1980s documentation. The circuit can be applied to modern operators with...
10 W Amplifier (CB6175E)
This circuit is from Mullard documentation from 1969. Transistors support current equivalents. Output...