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Old 22nd Feb 2021, 10:30 pm   #10
kalee20
Dekatron
 
Join Date: Feb 2007
Location: Lynton, N. Devon, UK.
Posts: 7,061
Default Re: wiring toroidal transformer primary in parallel

If you use 230V on 115V windings, the transformer core will saturate and the no-load current will, instead of being negligible, be sky-high.

The only way it can be done, is if the frequency is also doubled. But getting 230V 100Hz is going to be more expensive than buying the proper transformer!
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