h-bridge problem

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  1. - 1st December 2006, 04:02 #8
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    mister_e
    mister_e is offline Contributor
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    Sorry Vision for my stupid attitude...

    The major problem is the reverse biased diodes for your PNP transistors. AND if you're going to drive inductive load, you'll have to add 4 diodes to avoid back emf.

    something like the following is recommended
    http://www.mcmanis.com/chuck/Robotic...t-circuit.html
    OR
    http://www.bobblick.com/techref/proj...e/hbridge.html

    There's also dedicated ICs for that. L293D is popular.. and there's more and more like that.

    HTH

    welcome to the forum... even if you're using PDS Proton
    Last edited by mister_e; - 1st December 2006 at 04:05.
    Steve

    It's not a bug, it's a random feature.
    There's no problem, only learning opportunities.
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