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, which in our times would be called a shield, can also be used with other loads. The...
This circuit triggers a load when the sensor detects humidity. The triggering point is adjusted by...
This indicator makes use of an LM339 voltage comparator circuit that contains 4 internal...