This direct coupled circuit operates in class AB with good gain. The circuit is powered by 12 V. We found it in a Radio Electronics from October 1963.
This configuration, found in many publications, is from an American book from 1981. The power...
The circuit shown is from an American publication from 1970. It produces a tone that attracts fish...
Found a documentation on PCs from 1996, this circuit can be used as a shield. The relay is rated at...