We found this circuit in an American documentation from 1947. The circuit uses 5 tubes and has a feature to keep the tube filaments preheated.
The circuit shown in the figure has elements for maximum gain at maximum speed. By setting the...
In the figure we have the way to implement a monostable with a comparator 139, 239 or 339. The...
This circuit matches a high impedance input signal with a low impedance output. This circuit is...