This amplifier was found in a tube equipment manual from 1947. The high-fidelity circuit has pentode tubes at the output and a source with transformer.
This circuit causes an incandescent lamp to flash according to the input audio signal. The SCR...
This circuit is from a factory documentation (National Semiconductor) of the 80's. The power...
The A3906 integrated circuit from Allegro MicroSystems (www.allegro.com) consists of a single...