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 simple binary counter triggers two LEDs according to the number of pulses applied to the...
We found this circuit in a November 1970 Radio Electronics. It uses a PUT or programmable...
Found in a 1968 Novel Electronics Circuit, this circuit compares two light intensities using...