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 controls two lamps so that when one increases in brightness the other decreases. The...
We found this circuit in an Argentine documentation from 1973. The transistor admits a more modern...
This circuit was obtained from a 1998s Popular Electronics. The magazine no longer exists, but the...