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L293D H-Bridge

  1. Sep 26, 2015 #1

    I was wondering if you could advise me on the following. I am undertaking a personal project at home (mainly mechanical in nature) whereby I require the L293D H-Bridge to connect to a 12 V DC motor. I'm using a PIC 16F877A microcontroller. This microcontroller has a 5V output. The breadboard I have has a 15V but no 12 V rail.
    Can I connect the H bridge to the 15V rail and ground rail? Will the DC motor work ok?
    I have studied the data sheet but I'm still confused!

  2. jcsd
  3. Sep 26, 2015 #2


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    Gold Member

    Yes, just limit the PWM-signal to yield ±12V ( ±80% duty cycles ).

    The limit as for the bridge itself is 36V.
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