Found in a 1969 documentation, this circuit is reset by a push button. The activation time is 100 us. The transistors are from the era.
This simple robot or motor control circuit using a photocell as a sensor was found in the magazine...
This circuit uses an operational amplifier to modulate the light emitted by an LED with audio...
Equivalent transistors, such as the BC548, can be used in this circuit that we find in...