H bridge not working as expected

Discussion in 'The Projects Forum' started by gilley, May 10, 2015.

  1. gilley

    Thread Starter New Member

    Nov 23, 2014
    23
    0
    Hi,

    I have some problems with H bridge, hoping someone here could help me detect what's wrong or atleast give me some idea where to look.


    [​IMG]


    [​IMG]

    Note that R3 and R8 are not connected because there was some error with them, so we just left them out. Our mentor said that It should not matter while we are testing it. If u need any more info I will gladly provide them.

    Our mentor also gave us ir2110 instead of ir2112, which we orginally developed board for. Not sure why but nothing I can do about it now.


    So back to the problem. I have tryed to control ir2110 using arduino and sending some signals to it. Main ideas was to send 5v signal to Input high while not sending anything to Input Low, then after a second doing opposite thing. But when I do that I always have voltage on BOTH output high and low, and it's constant, not changing. Therefore either transistors are always open.

    I would need some help with this, if possible.

    Thanks in advance.
     
  2. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    There are two images that will not show up on the forum.
    Please upload the images to the forum using the "Upload a File" button, below the message box.

    Bertus
     
  3. gilley

    Thread Starter New Member

    Nov 23, 2014
    23
    0
    Thanks, it's working now :cool:
     
  4. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,524
    2,369
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