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Transformer troubles

Discussion in 'Troubleshooting and Repair' started by Niranjan, Feb 2, 2010.

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  1. Niranjan

    Niranjan

    3
    0
    Feb 1, 2010
    totoidal transformer gets heated..replaced by new one but same problem...incoming supply through ups what may be the problem for overheating checked wiring also.
    plz suggest on same
     
  2. Niranjan

    Niranjan

    3
    0
    Feb 1, 2010
  3. davenn

    davenn Moderator

    13,813
    1,945
    Sep 5, 2009
    you havent said what the transformer is supplying power to or what sort of AC voltage
    is coming out of the transformer ( what should be coming out when circuit is working ok)

    disconnect the transformer from the circuit it supplies and check the circuit with a
    multimeter on resistance range. I would expect a few kOhms of resistance.
    And anything less than a few 100 Ohms would indicate a problem ie...
    a bridge rectifier has gone low resistance/short cct etc

    cheers
    Dave
    VK2TDN
     
  4. Niranjan

    Niranjan

    3
    0
    Feb 1, 2010
    Failure of Mosfet

    in my pcb there r mosfets . frequent failure of mosfets are observed what could be the reason the side of mosfets gets burned....plzz suggest
     
  5. vk5ajl

    vk5ajl

    8
    0
    Feb 1, 2010
    It is not possible to say what is causing the fets to blow or anything very much without a schematic.
     
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