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 only detects variations in light falling on the sensor. The circuit uses an LM380 as a...
We found this circuit in a French technical documentation from 1982. The circuit can be...
This amplifier with differential input uses two old op amps but can be implemented with modern op amps....