Medium impedance stage (CB20563E)

We found this circuit in an English publication from 1963. The circuit uses germanium transistors of the time.

Symmetrical Inverter (CB6647E)
This circuit reverses the signal if both positive and negative. We found it in an American...
Delayed Pulse Generator (CB6470E)
This circuit was found in a 1967 documentation. The switch diode is a component of the time and is...
LM393 Delay Generator (CB4486E)
The presented circuit generates a pulse whose delay in relation to the input depends on RC. These...