Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Hi Billy, No need to apologize for asking.
There are no bad questions.


You are talking about a variac.
You can find them on ebay now costing a lot less than I originally paid.
Here's one for under $70 delivered.

https://www.ebay.com/itm/Variac-US/283778928514

You can also make one for most electrics with a 600 watt household lighting dimmer switch.

I'll add a picture of each.

Gil