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Thread: 220 volt dc ssr

  1. #1
    Join Date
    Feb 2009
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    Wagga Wagga, NSW, Australia
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    Default 220 volt dc ssr

    Hi,
    Has anyone ever switched 220 volt dc on the dc ssr 4 chanel board.
    Have looked at possible mosfet replacements:SPA11N65C3 or stp6nk50z.
    Any ideas on whether these would work?
    Reason for this is to switch 5 wire rope light and to reduce current draw by using 12 volt led strips.

  2. #2
    Join Date
    Nov 2009
    Location
    Morrisburg, On, Canada
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    Default Re: 220 volt dc ssr

    In principle it can work.
    Working with high voltages is not a good idea for the inexperienced DIY.
    Where will you derive the 220VDC from?
    Rectifying the line ac is a bad idea due to lack of neutral/line isolation issues.
    A transformer for this purpose would a feaseable option.

    I would prefer to beef up the current capacity for your 12V string by paralleling them rather than designing a 220VDC drive system.

  3. #3
    Join Date
    Oct 2008
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    San Jose, CA
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    Default Re: 220 volt dc ssr

    The existing DCSSR design requires a 5v regulator to drive the opto and it surely won't work with 220v.
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