This cassette player motor speed control was found in the January 1991 issue of Radio Electronics magazine. The circuit is for voltages from 9 to 12 V.
This project was originally made to feed small microcomputers of the time (1986). However, the basic...
This circuit was found in a 1968 documentation. It makes use of both NO and NC reed-switches and small...
This circuit is indicated to function as a receiver of the previous circuit. The circuit is from...