Pull down resitor

Discussion in 'General Electronics Chat' started by temuri, Oct 11, 2013.

  1. temuri

    Thread Starter New Member

    Aug 25, 2013
    12
    0
    Hi!!
    i am having a problem with l293D motor driver. My enables are at a high logic even though they not connected with pwm input. I thought of a pull down resistor but i dont know what value of ohms i should use??
    btw i am driving two gear motors...
     
  2. Jony130

    AAC Fanatic!

    Feb 17, 2009
    3,957
    1,097
    Use 1K resistor.
     
  3. ScottWang

    Moderator

    Aug 23, 2012
    4,852
    767
    The following messages on the first page of the L293D datasheet -
    When an enable input is high, the associated drivers are enabled and their outputs are active and in phase with their inputs.

    So if you pull down the EN then the L293D won't work, pull high to Vcc1 and pull down to GND.
     
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