This amplifier with antique germanium transistors is from a 1968 publication. The circuit provides some watts of power with excellent sound quality. This is the configuration used in commercial equipment of the time.
This sensor circuit for currents of the order of nanoamperes was found in an American...
This circuit was found in the February 1991 Radio Electronics magazine. The circuit must be...
The basis of this circuit is the TL032 from Texas Instruments. The circuit converts an input in...