This circuit has tone control, and its power depends on the supply voltage. The circuit is from the Philips integrated circuits manual from 1990.
This transistor circuit was found in Mullard's 1960s transistor manual. The transistors are...
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
This high impedance amplifier is from 1985 documentation by General Electronic. The amplifier with...