Backup Power Supply


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  1. #1

    Default Backup Power Supply

    Hallo People!

    I Search for a good Pic controlled Backup Power Supply schematic.
    I need for a Alarm Device that I have made,when the Main Supply is no more here I need that the circuit switch to 12 Volt Acid Lead,and all the Time be Charged when the Main Supply come back.
    I hope You understand what I mean.

    Thanks a lot.

    Regards Pesti.

  2. #2
    Join Date
    Sep 2006
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    Mexico
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    Default

    Hi. Why a microcontroller? With a comparator and a few components can solve this problem.
    It's very easy and cheaper

  3. #3


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    Thanks,
    did you have any schematics or links for me.

    Thanks a lot

    Regards Pesti

  4. #4
    Join Date
    Sep 2004
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    Mentor, Ohio
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    Hello,

    Goto www.microchip.com and get AN714. That's an application note on a security system and there are schematics for an alarm system including the power supply. Well designed!


    HTH,

    BobK

  5. #5


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    Thank you !

    Regards Pesti.

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