We found this circuit in a 1971 documentation. The circuit can be assembled with more modern transistors such as BC548 for Q1, BC558 for Q2 and BD135 for Q3.
This circuit can be used to control the movement of a robot, acting on the motor. Two motors must...
The purpose of this circuit is to convert a short-lived pulse into a negative rectangular pulse. The...
This circuit was obtained in a 1991 Electronics Handbook. The publication no longer exists, but...