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Thread: DC motor using H-bridge

  1. #1
    Junior Member User
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    Default DC motor using H-bridge

    Hi,

    I want to control a DC-motor for my robot.

    Do i need to connect any ultrfast diode to the H-bridge for its function?

    If anybody having schematic for DC motor control.Plz give it to me.

    Thanks,
    Be a Machine

  2. #2

    Default

    What IC you using? or constructed H-Bridge with discrete components.

    IF your current ratings are satisfied, use L293D which has internal diodes.
    Check its datasheet...

  3. #3
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    Hey,
    I m using L298. and ATMEGA8
    Be a Machine

  4. #4
    Senior Member T-1000
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    Default

    yes, use diodes...

    normal ones are enough.
    The datasheet has the details, that will be sufficient. Ground the current sense pins.
    .... I didnt do it ! ....

  5. #5
    Member Android
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    Default

    Hi,

    I am using L298 ic for controlling two 2 Amp , 24 V DC motors.

    Is it necessary to use fast recovery diode or else I can use normal 3 amp diode like IN5408 ,because in L298 datasheet its recommends fast recovery diode with trr <200 nsec & VF as low as possible

    The cost of fast recovery diode 1N5416 is around 15/- each

    I need 8 diodes that’s cost to Rs. 120/- which is more than the value of L298

    Or any other low cost fast recovery diode I can use with L298

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