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 from an old American publication, using transistors of the time and operating with a 48...
This high quality audio preamplifier uses three bipolar transistor and is powered from 24 V...
The circuit shown in the figure allows a pressure switch to be used to turn a load on and off in a...