This Public Address amplifier was found in an American publication from 1947. The circuit uses 5 tubes and a transformer source.
This circuit generates an FM signal of 4.7 or 10.7 MHz for audio signals on analog TV or FM, with...
This circuit was found in the SGS manual of linear integrated circuits of 1982. The CMRR depends on...
This amplifier is powered by a 9 V source. We found the circuit in a 1964 documentation. The...