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.
Found in a 1967 American electronics magazine, this circuit has an input impedance of 2000 ohms....
This circuit makes use of components from the time it was published. The TCA151 is not a common...
This ultrasonic insect repellent was found in American documentation from the 1980s. The...