Found in a 1970 American publication, this circuit uses transistors of the time. These transistors may be replaced by current equivalents. The factor Q is greater than 3 000.
The circuit that we give below has two possible applications: it can be used to control a lamp...
This circuit trips when the input signal goes through zero, triggering a direct current load. The...
This interesting multivibrator was found in an Italian magazine that no longer exists. This is...