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Total 5 documents matching your query.

1. [Amps] Variac repairs (score: 1): Author: K1SG@aol.com; Date: Wed, 23 Dec 2009 20:04:15 EST; In pre-testing a junkbox Variac before using it for filament control, I watched it arc and spark and burn out the winding near the high voltage end. Does anyone do Variac repair and rewinding? Or is; /archives//html/Amps/2009-12/msg00533.html (7,284 bytes)
2. Re: [Amps] Variac repairs (score: 1): Author: K8LEEWMM@aol.com; Date: Sat, 26 Dec 2009 16:45:42 EST; Steve easy to fix! take it apart,,, maybe take some pictures first, remove 1 full winding,where it has burnt, and resolder. I used silver. regular solder will work. But every time that i have "smoke"; /archives//html/Amps/2009-12/msg00539.html (8,375 bytes)
3. Re: [Amps] Variac repairs (score: 1): Author: Rick Stealey <rstealey@hotmail.com>; Date: Sat, 26 Dec 2009 22:26:16 +0000; The question is, do winding resistance, No. Just think about it, the variac is good for 5 amps continuous. That's over 500 watts. If your 220 transformer was drawing 500 watts you'd notice the heat.; /archives//html/Amps/2009-12/msg00541.html (7,235 bytes)
4. Re: [Amps] Variac repairs (score: 1): Author: texasrf@aol.com; Date: Sat, 26 Dec 2009 22:16:43 EST; Steve, I have seen that smoking variac problem a couple of times and both times were due to my wiring error. If you somehow connect 120vac between the wiper and one end of the winding, as you rotate; /archives//html/Amps/2009-12/msg00548.html (8,382 bytes)
5. Re: [Amps] Variac repairs (score: 1): Author: Ron Youvan <ka4inm@tampabay.rr.com>; Date: Tue, 29 Dec 2009 15:24:56 +0000; I had one "powerstat" go bad at one spot (and seen many more over the years) out of 10 in use for over 20 years. The normal variable transformer has a carbon brush that constantly touches more than; /archives//html/Amps/2009-12/msg00556.html (8,585 bytes)

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