This old configuration of an audio amplifier has a push-pull two-transistor output stage. Output power is low and the critical components are the transformers. The circuit was found in an 1958’s publication.
This circuit can drive a loudspeaker with near 1 W of Power from 6 to 9 V supplies. The circuit...
We found this audio preamplifier circuit with a 741 operational in a 1976 publication. However,...
This transmitter uses a small loudespeaker (FTE) as microphone and can send the signals to...