Quote:
Originally Posted by oztruck
The diodes will stop electricity flowing in one direction but allow it to flow in the opposite direction. When it reaches the limiting switch the switch cuts power to the motor, to get it to work in the opposite direction, to go the other way we need to supply power. That's what the diode does. It lets the reverse power ONLY to reach the motor. Hope this helps you.
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that makes sense. Are the diodes special for this application? i mean if i needed to order these from somewhere..what do i ask for exactly? thank you