Dc motor reversing

Discussion in 'General Electronics Chat' started by whiz kid, Oct 13, 2010.

  1. whiz kid

    Thread Starter New Member

    Oct 13, 2010
    Dc motor reversing

    Hi folks
    this is the best technology forum on the planet.
    Does anyone know how of any hardware/device that can used with a two timers to reverse a twelve volt Dc motor automatically .
    Most electronics hobbyist know that an alternative is using a DPDT toggle switch but this needs to operated manually.
    Does anyone have an idea about how to do this? ​
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    Hey Welcome
    U can use a relay and 555 timer to do this
  3. Bernard

    AAC Fanatic!

    Aug 7, 2008
    If it is a low current motor, under 200 mA loaded, use one 555 for timing & driving a second 555 as invertor. Connect motor, with as much series resistance as possible with given load, between pins 3. Bypass motor with capacitor or diode supressors. Check post by mpcotuong, 9-22-10, chat.
  4. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
    The electronic equivalent of a DPDT switch is called an H-bridge. H-bridges are used quite often to control DC motors. The direction of motor rotation can be controlled with a microcontroller, transistors, or even micro-switches.

    How big of a motor are you trying to control? Not all DC motors are easily reversible.

  5. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
    H-Bridge, preferably with a microcontroller or 3 timers, the 3rd being used to wait for the motor to stop so the H-Bridge/motor windings do not burn out from over-current.