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diodes, advise needed

Discussion in 'General Electronics Discussion' started by marx, Apr 16, 2015.

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  1. marx


    Apr 16, 2015
    Hi! I'm new here and in electronics in general. Have problems with inverter type MIG welder. Some details to be changed.
    2 (from 6) Transistors IKW30N60 and 2 (from 6) resistors and 2 (from 2) Diodes. (this for main power board, I dont know anything about the control module jet)

    first question ref. diodes can I substitute original RHRP860 with RURP1560 ??? original is faster but lower Amps, substitute little slower but can hold higher Amps. (this is my idea to put "stronger" diode)

    second, originally resistors show 22.4-22.6 ohm, can I put 22.1ohm 0.6w (originals seems to be 0.4 -0.6w, not clear)
    (I dont have any diagrams of the board and dont know original parameters)

    If I make such changes, will the system work properly or I can make it worse?
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