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IndustryArena Forum > Machine Controllers Software and Solutions > DNC Problems and Solutions > HELP Power supply broken... Bridge rectifier smokes... Coil heats up.

Thread: HELP Power supply broken... Bridge rectifier smokes... Coil heats up.

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  1. 04-06-2009, 05:02 AM #1
    Delanoman
    Delanoman is offline Registered
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    HELP Power supply broken... Bridge rectifier smokes... Coil heats up.

    I just wanna know what going on with my power supply. Earlier today I had it up and running no problem. Then I plugged it in again and the bridge rectifier started to smoke up. With no wires going out of the power supply it still smokes up. I am curious if I can fixed this unit by just replacing the bridge rectifier. Thanks

    http://cgi.ebay.com/38V-400W-CNC-Mil...QQcmdZViewItem
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  2. 04-06-2009, 05:09 AM #2
    Al_The_Man's Avatar
    Al_The_Man
    Al_The_Man is offline Community Moderator
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    Probably shorted bridge, pick up a higher current one for replacement, did you have correct fusing in place?
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.
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  3. 04-06-2009, 05:15 AM #3
    Delanoman
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    No I don't have any fuses protecting my power supply at all, didn't think I'd need them. I only have them for my motor controllers and my steppers. How should I set fuses up for my power supply?
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  4. 04-07-2009, 04:19 AM #4
    Al_The_Man's Avatar
    Al_The_Man
    Al_The_Man is offline Community Moderator
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    There should be correct fusing, in the primary at least of your transformer.
    Also optional in the secondary leads to the bridge.
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.
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