This motor speed control with tachometer sensor was found in the 1993 Radio Experimenter Special Projects. The maximum current is 2.4 A.
This circuit is intended to increase the width of a pulse. The circuit is TTL and can be used as a...
We found this circuit in an American 1980s documentation. The transistors can be equivalent as BC548...
This circuit was found in Sprague Electric documentation from the 90s. The circuit uses a...