h bridge

Discussion in 'The Projects Forum' started by Mhlengi, Sep 28, 2012.

  1. Mhlengi

    Thread Starter New Member

    Sep 28, 2012
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    Hi, I am building an H Bridge to drive a 2A @ 12V motor and I am using a 555 timer for the signal, so I tested the circuit at 7.5V DC but the motor only rotates in one direction, I use a 4.7k variable resistor for controlling the motor and this only makes the motor speed slow when the variable is turned fully anti-clockwise n the speed fast wen the variable is turned fully clockwise. Any suggestions on how I can change the direction.
     
  2. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
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  3. Mhlengi

    Thread Starter New Member

    Sep 28, 2012
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    Thnx Dave bt now the circuit needs to have an OFF state and dts when the variable resistor is in mid position, I'm suspecting the variable coz I first used a small one and the motor only vibrated then I only got motion when I used the 4.7k...oh one other thing is when I played around with variable resistor dat is moving it from side to side, the motor wud change direction.
     
  4. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    You talk weird. Text speak? DTS is a company isn't it?
    Please type in complete English words so you do not read like a little kid.
     
  5. Mhlengi

    Thread Starter New Member

    Sep 28, 2012
    4
    0
    dts- that's
    Coz- because
    Dt- that
    Wen- when
    bt- but
    Wud- would

    Hope u understand now, please appl these to the post above and not forgetting the suggestion please.
     
  6. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
    5,003
    745
    I dont get what your on about, please can you post your schematic ?
     
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