This integrated amplifier was found in a non-existent British magazine from 1975. The used integrated circuit is still popular and the mono bridged version can provide 36 W output power. 4 A.
This circuit was obtained from an English magazine from 1977. It is a toy musical instrument that...
We find this circuit in an American 80's documentation. No further information about the...
The integrated circuit used is not very common today. Transistors can be replaced by more modern...