Variac is a generic trade name for a variable autotransformer. If that doesn't help explain much, ... How To Make High-Voltage Sparks The Shocking Truth: How To Make High-Voltage Sparks.

My Variac is usually used to control quite heavy loads (2 to 3 kW), ... I can’t stress this enough: if you leave a high voltage circuit completely floating, ...

Hi, I am trying to verify that a system can run at 50 or 60 Hz and 100 - 240 VAC. Can a Variac be used change both output frequency and voltage or just ...

I’ve got the same problem with a 3KVA variac. Trips all my breakers (type B and C). I was thinking of making a zero-crossing SSR/triac but I just read in the link about using peak voltage instead… ...

To conduct the tests described in this article you will need an isolated AC source and Variac, a wattmeter, at least four multi-meters including two offering a high resolution current range, an ...

Increase the voltage carefully, be sure not to apply a voltage larger than 100 volts; If the banana plugs come loose while the variac is active, users may be exposed to dangerously high voltages; ...