This nice function generator circuit with the XR2206 was found in the May 1977 Radio Electronics magazine. The circuit has a transistor output stage.
This amplifier was taken from documentation from the 1960s. Transistors are germanium types from...
Simply place the tool or object you want to magnetize inside the coil and briefly press S1. The...
This circuit is old, from an English publication from 1979, so the indicated sensor is no longer...