This circuit was obtained from an American documentation from the 1970s. Information on the current obtained and the winding of the transformer is not given.
Tone controls for audio applications can also be considered filters that must attenuate certain...
This 80's circuit uses germanium transistors like the AC125, AC151, AC163, 2N506 and others to...
The circuit below is suggested by National Semiconductor in technical documentation on the LM3909....