Matrix Keypad routine

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  1. - 22nd June 2007, 14:58 #11
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    passion1
    passion1 is offline Junior Member
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    Ioannis / Steve

    I would like to drive a 220V circuit with a power mosfet.
    Do you think an optocoupler is a MUST or will I be able to get away with a diode to protect my pic?
    If so, what diode or alternative protection would you recommend?
    Last edited by passion1; - 22nd June 2007 at 15:14.
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