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.
We found this circuit in a 1997 documentation. It can be used in any common 12 V source and has...
In the figure we show how to use one of the four comparators in the LM336 in a temperature alarm. As...
We found this configuration in the ON Semiconductor thyristor manual. The triacs depend on the...