Variacs and possible alternatives

[Findm-Keepm]

The one I'm offering is a 116BU, same as this eBay item: 150258319426

PM me and it's yours for shipping.

Cheers,

[danrulz98]

Originally Posted by bandersen

I second everything Reece said

I use a vintage RCA ISO-TAP WP-25A isolation transformer and a modern variac from Circuit Specialists.

That seems like a nice cheap one.

What does the isolation transformer do? I know I've seen them and I have an idea as to what they do, but I've never been too sure.

Originally Posted by Findm-Keepm

The one I'm offering is a 116BU, same as this eBay item: 150258319426

PM me and it's yours for shipping.

Cheers,

PM sent.

[bandersen]

Originally Posted by danrulz98

That seems like a nice cheap one.

What does the isolation transformer do? I know I've seen them and I have an idea as to what they do, but I've never been too sure.

Some TVs and radios (AA5) ran right off the AC input without a transformer. Sometimes they would solder one side right to the chassis! Depending on which way you plugged in the non-polarized plug, the whole chassis could become hot An isolation transformer will make the set act as if it had a power transformer.

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