"Greg." <[EMAIL PROTECTED]> made an utterance to the drakelist gang
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Yes a variac is and adjustable AC transformer, for instance such as this one:
http://www.rfelektronik.se/temp/Dsc_2558.jpg
http://www.rfelektronik.se/temp/Dsc_2562.jpg
It might not be a beauty but it bascially cost me nothing, and provides
filtered 0-300vac 0-10Amp with power-on softstart aswell.
I guess there would be alot old cheap variac's on Ebay for instance...
However for tube filaments you can also use DC if you have an adjustable
current source...
//Greg
"francobevi francobevi" <[EMAIL PROTECTED]> made an utterance to the drakelist
gang
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I have some tube equipment to power up safely. I heard about someone use
Variac. I do not have one and I would know what it is (a kind of transformer
to gradually increase AC voltage?), what type to eventually buy and a
procedure to use it correctly to revive old rigs.
Bests,
Frank
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