Wednesday, June 12, 2013

TIG schematics and components(DIY)



Tig Schematics and components




ST500F1200-30EE


replaced with steel rod



SFERNICE RSSD 30x250 12ohms 5% 
saturable reactor with spike suppressor
LECT 50ohms
saturable reactor with capacitor
revised schem with saturable reactor
IGBT 50amp 1200v(BSM50GB120DN1)
IGBT 50amp 1200v(BSM50GB120DN1)

two 3300uf 400v capacitor



pot 1k ohm

SFERNICE RSSD 30x250 12ohms 5% 

SCR 50amp 800v


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5 comments:

  1. UnknownNovember 26, 2016 at 2:41 PM

    Thank you very useful information.

    ReplyDelete
  2. UnknownFebruary 17, 2019 at 6:52 PM

    Circuitos utiles y Facil de entender

    ReplyDelete
  3. Herbie66bFebruary 14, 2020 at 3:01 AM

    Thanks for the schematic at the top which I am using with a few differences.
    25 Ohm surge resistor on 220 volt massively cut down the power and overheated. 0.47 ohm with the original microwave cap prevented switch on surge trip with 20 amp MCB.
    A bleed resistor is needed to discharge the large caps.

    ReplyDelete
  4. Herbie66bFebruary 14, 2020 at 3:03 AM

    I should mention that this was using the original 140 amp commercial welding transformer, not the microwave conversions.

    ReplyDelete
  5. UnknownAugust 29, 2021 at 5:50 AM

    Hi Herbie66,
    Did you build this circuit with success?? It would bei very useful If you are able to give me some detailed informations about it.
    Kind regards
    Didi

    ReplyDelete

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