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New controller in place of the normal MFC

Discussion in 'Lights - Store Bought and Home Made' started by Mike_in_Wales, Jan 23, 2016.

  1. Mike_in_Wales

    Mike_in_Wales New Elf

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    Hi,
    I want to construct a new controller to replace the MFC which came with the light strings I am using - 500 leds. The lights run at mains voltage dc (directly after a bridge diode set).
    The existing MFC has a couple of SCRs labelled PCR 406X. I can get these on ebay but they are quite expensive, around £7.00 each and I would need six of them.
    Is there a cheaper equivalent I could use ?
    Thanks,
    Mike
     
  2. David_AVD

    David_AVD Bite my shiny metal ass!

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    That one looks to be similar to the 800mA 400V sensitive gate SCRs used in a lot of similar units.

    Possible alternatives are BT169G and MCR100-6 (on eBay for about AUD $7 for 10 pieces).
     

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