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Age of Valor Forum Index » Off Topic » I bought a 3kva variac
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I bought a 3kva variac
PostPosted: Wed Nov 01, 2017 4:17 am Reply with quote
Red Squirrel
AoV Owner
Joined: 13 Dec 2006
Posts: 8122
Location: Ontario, Canada




Total impulse purchase.

Should be fun to play with. Razz

https://www.ebay.ca/itm/3-KVA-Variac-variable-autotransformer-120-volts-input-0-140-volts-output/311990280782?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649

Been wanting to mess with AC-DC converter design so figure this will be a good way to test my designs with a lower voltage and slowly rev it up instead of giving it 120 right off the bat.
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PostPosted: Sun Nov 12, 2017 7:35 am Reply with quote
Red Squirrel
AoV Owner
Joined: 13 Dec 2006
Posts: 8122
Location: Ontario, Canada




Came in the other day, it's a big beast!



I also ordered a 1,500va transformer to go with it so I can get a proper isolated output. Important if testing stuff with a scope. The transformer I ordered happens to be a step up transformer so it can go up to 480v if I recall, but with the variac I will be able to set it to what I want. Or I can see what it takes to make things pop. Twisted Evil

Think I will eventually combine the two in some kind of big case and have some electronic controls on the front. Essentially it will be an unregulated variable AC "bench" supply.
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PostPosted: Sun Nov 26, 2017 11:34 pm Reply with quote
Red Squirrel
AoV Owner
Joined: 13 Dec 2006
Posts: 8122
Location: Ontario, Canada




Also bought a big ass transformer.



Bought it for isolation as it makes working on mains safer, but it also happens to be a centre tapped step up transformer, so a big beast! With the variac it will go from 0 to about 500v.
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I bought a 3kva variac
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