This very high voltage generator for photographing the aura was found in the special edition of Radio Electronics Eerimenter magazine from 1990. The circuit uses a car ignition coil.
This circuit with the LM741 operational amplifier can be applied to other operational amplifiers. We...
This circuit came out in the American magazine Electronics Now, in a 1993 issue. The magazine no...
This small source was found in an English documentation from 1970. The diodes can be 1N4002 for...