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Tool Talk Discussion Forum

Re: AC-DC welder

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LOU from Wi.

07-26-2013 10:44:40
72.160.225.136



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Keh. Right off I"m far from an expert welder although my experience with D.C welding is ,I could weld Horizontal (and vertical) with no problem of spotty weld overs, and slag deposits. I sold my straight A.C.welder and bought a A.C/D.C. Built a couple of Equiptment trailers . First welder I ever owned was a "SHUNT TYPE Marquett(sp) And I wished I would have kept it. With that one, I was so confident I could weld clouds lol. D.C. For my son . Good choice. JMHO LOU

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IH2444

07-26-2013 16:54:35
98.65.242.178



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 Re: AC-DC welder in reply to LOU from Wi., 07-26-2013 10:44:40  
Quoting Removed, click Modern View to see

What is a shunt type welder?



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Stan in Oly, WA

07-28-2013 10:34:02
174.31.206.36



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 Re: AC-DC welder in reply to IH2444, 07-26-2013 16:54:35  
A shunt type welder is one that changes amperage by moving a core through a pair of secondary windings in the transformer. Any welder that has a crank or a large lever is probably a shunt type welder. They're often described as infinitely adjustable. The most common alternative is a welder that gets different fixed amperages from individual wires called taps which are connected to different locations on the windings of the transformer.

A tapped welder is one which changes amperages by clicking a lever on a dial with very little force, like a Lincoln buzz box, or has a series of outlets on the face of the welder marked with different amperage settings, and you plug your electrode holder cable into the hole with the amperage you want, like some old Forneys (and at least one old Lincoln model)is the most common alternative type of transformer welder. It's not infinitely adjustable because you can't (easily) go to any setting except those fixed settings. You can't dial in your amperage setting with perfect accuracy, but tapped welders don't go out of adjustment like shunt type welders.

Stan

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LOU from Wi.

07-26-2013 18:38:30
72.160.225.136



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 Re: AC-DC welder in reply to IH2444, 07-26-2013 16:54:35  
Like a rotary dimmer switch. The more amps required the shunt closes to keep power at the setting without burning the welder up. Best way I know how to explain it. You can google shunt type welders. LOU

PS link below is as close as a description as I can find.



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KEH

07-26-2013 15:34:24
209.213.25.24



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 Re: AC-DC welder in reply to LOU from Wi., 07-26-2013 10:44:40  

Thanks. Glad to hear from some hands on experience.

KEH



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