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Uncle Bulgaria · 24th Nov 2020, 7:20 pm

Thanks Ed - I'm finally back on to looking at this. Now all the Uhers are back together it's time to wean them off the variac.

How would the autotransformer be more compact? Can't the same transformer be wired as a bucking and as an autotransformer? Can you give me an example of the sort of transformer I could use? I calculate I don't need more than 5VA for dropping 20V at 0.25A, which is the current the variac's display reports during use.

24th Nov 2020, 7:20 pm	#12
Uncle Bulgaria Nonode Join Date: May 2016 Location: Cornwall, UK. Posts: 2,329	Re: Uher Miniline 220V mains drop Thanks Ed - I'm finally back on to looking at this. Now all the Uhers are back together it's time to wean them off the variac. How would the autotransformer be more compact? Can't the same transformer be wired as a bucking and as an autotransformer? Can you give me an example of the sort of transformer I could use? I calculate I don't need more than 5VA for dropping 20V at 0.25A, which is the current the variac's display reports during use.