Published in the August 1986 issue of Radio Electronics magazine, this circuit acts as a weapon, capable of delivering strong shocks to anyone who touches it. The circuit operates at 10 kHz.
This circuit appears elsewhere on this site, but from different sources. Using the LM3900, we find this...
This interesting source or isolation transformer also allows to vary the output voltage by...
In this circuit the CA3140, an operational amplifier, is used as a comparator with the zener diode...