Good step-up/down transformer (for 100v, 220v, 240v amps)

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yello
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Good step-up/down transformer (for 100v, 220v, 240v amps)

Post by yello »

I'm in the US with 120v outlets. I have several amps that are not 120v - they require 100v, 220v, and 240v.

Does anyone know of a good step-up/down transformer that can handle all of these? I could get separate ones if 100v needed to be separated from the 220/240v.

I've thought of building a bucking transformer for my vintage amps to get the 110-117v listed on their chassis given my wall puts out 121-123v - but the typical designs I see don't quite cover down to 100v (unless I sourced a different part I assume). This is what I found for that:

https://robrobinette.com/images/Guitar/ ... former.pdf
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jeepe
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Re: Good step-up/down transformer (for 100v, 220v, 240v amps)

Post by jeepe »

hi,

one thing you should mention is the VA "input" ratings of your amps...

Peter
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TriodeLuvr
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Re: Good step-up/down transformer (for 100v, 220v, 240v amps)

Post by TriodeLuvr »

More info here regarding bucking transformers. It's worth reading for a good understanding of the options:

https://sound-au.com/articles/buck-xfmr.htm

Don't forget that you generally can't run a 60Hz transformer on a 50Hz line. Vice-versa is OK.

Jack
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