Simply place the tool or object you want to magnetize inside the coil and briefly press S1. The generated single polarity field should magnetize the object if the material it is made to allow.
This circuit provides a power per channel between 6 and 10 W depending on the load. The circuit is from...
For an 8 ohm load, this Motorola circuit was found in a 1968 documentation. The transistors are of the time...
This circuit was obtained from a 1990 English magazine. The circuit can be assembled with MOSFETs of...