This is the 1968 MR480 commercial cassette recorder circuit. The circuit was fully transistorized and powered by 4 large batteries. We found the diagram in a Japanese documentation of the time.
This self-oscillating voltage conversion circuit was found in an American 1980s documentation. The MOSFET...
This high-performance circuit was found in the 1982 SGS Linear Integrated Circuits Manual. The...
This is a very simple configuration with a power transistor to control a DC motor from 3 to 12 V...