Found in a 1965 Electronic Design, this circuit generates adjustable pulses between 200 uA and 10 mA. The components admit equivalents. Pulse duration is 1 us.
The circuit shown is from an old European publication. In it we have the way to activate a relay...
We found this circuit in a European publication from the 1990s. Transistors are still common types...
This circuit was found in an American documentation and can be added to common amplifiers of any...