This source was originally suggested by Delco in a 1969 documentation to power amplifiers up to 50 W. The transistors are of the time admitting modern equivalents.
This small audio amplifier is based on the LM390 with a minimum of external components. We found it...
The integrated circuit used is not common today. The circuit presents a bass boost according to...
This circuit provides two outputs of the same signal. One with the original phase and the other...