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How to make an H-bridge? — Parallax Forums

How to make an H-bridge?

P!-RoP!-Ro Posts: 1,189
edited 2009-01-06 06:02 in General Discussion
I've been trying to make a high current H-bridge recently with a couple of transistors I got. After recently burning up a resistor (and damaging my bread board) I decided I would see if anyone on these forums could tell me much about them or show me a site. I found a website that gave instructions on how to make a 5a 30v H-bridge but the skills required were beyond my capabilities. Anyone know a better site? Or have advice on hooking it up? I got·mine working·as long as I change the resistor depending on my voltage input, but there must be a better way.

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PG

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2009-01-02 05:46
    The Wikipedia article on H-bridges and the links off that webpage are pretty complete.

    If you want advice here, you'll need to provide more information, like posting a schematic of what you're currently using.
  • T ChapT Chap Posts: 4,223
    edited 2009-01-03 18:40
    You should get a mosfet driver to avoid shoot through. Google HIP4080A, full bridge N-channel FET driver IC. A mosfet like IRF540 easily handles 5 amps at 30 volts.
  • LeonLeon Posts: 7,620
    edited 2009-01-03 19:44
    The newer PICs like the 18F1220 can drive H-bridge circuits directly. All that is needed are suitable MOSFET drivers and MOSFETs.

    Leon

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    Amateur radio callsign: G1HSM
    Suzuki SV1000S motorcycle
  • PhilldapillPhilldapill Posts: 1,283
    edited 2009-01-04 04:42
    My cents in regards to the mosfet driver, is a UCC27322. It's one bad mamba-jamba(when it doesn't go pop like in another on of my mystery threads...)
  • P!-RoP!-Ro Posts: 1,189
    edited 2009-01-06 06:02
    Srry for the late response guys, fergot to check back tongue.gif
    I did figure out how to do it though. I ended up following the circuitry of an old rc car to figure it out smile.gif·however I·might try out that idea of yours Leon. I've only just started programming pics, but I'm sure I can figure it out smilewinkgrin.gif

    P.S. if·I·seemed a little crazy today it wuz probably because·school started again after a long break.

    Cheers,
    pi
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