This amplifier step for small signals can use any general-purpose transistor like the BC548. The circuit can be powered by voltages from 6 to 12 V.
This circuit was found in the Electronics Experimenter Handbook of 1961. The circuit uses door...
The basis of this circuit is a National Semiconductor operational amplifier that functions as a...
This two-transistor amplifier can be used as power stage for intercom, experimental receivers,...