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.
The A3906 integrated circuit from Allegro MicroSystems (www.allegro.com) consists of a single-step motor...
This circuit, already explored in other publications, uses the signal from a strong station to...
Signals of up to a few tens of kilohertz can be generated by this circuit found in a European...