This trigger uses two switching transistors that can still be found with some ease. The circuit is from an old documentation and its purpose is to speed up the switching of logic circuits.
This power supply provides a12 V stabilized output. The transistor must be provided with a good...
This circuit, which can be used as a shield, was found in American documentation from the 1970s....
Found in American documentation from the 90s, this circuit shows how to derive a signal in the...