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Old 22nd January 2013, 06:54 AM   #1
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Default Using a Variac as main transformer in DIY amplifier

I need some input on using a 5 amp/120V Variac as the main transformer in power supply for a DIY amplifier.
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Old 22nd January 2013, 07:03 AM   #2
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If the variac is just a multi-tapped autotransformer, absolutely not!
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Old 22nd January 2013, 07:03 AM   #3
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Huh? Why?? You're up to your ears in surplus Variacs?
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Old 22nd January 2013, 07:05 AM   #4
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Variacs provide NO isolation from the mains. DONT EVEN THINK ABOUT IT
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Old 22nd January 2013, 07:05 AM   #5
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An alarm in my head says fire
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Old 22nd January 2013, 07:06 AM   #6
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