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Motor driver L293d
L293D is a typical Motor driver or Motor Driver IC which is used to drive DC on either direction. It is a 16-pin IC which can control a set of two DC motors simultaneously in any direction. It means that you can control two DC motor with a single L293D IC. Dual H-bridge Motor Driver integrated circuit (IC).The l293d can drive small and quite big motors as well.
== Concept ==
It works on the concept of H-bridge. H-bridge is a circuit which allows the high voltage to be flown in either direction. As you know voltage should change its direction to able to rotate the motor in clockwise or anticlockwise direction, Hence H-bridge IC are ideal for driving a DC motor.Using micro-controller
In a single l293d IC there two h-Bridge circuit inside the it which can rotate two dc motor independently. Due to its size it is very much used in robotic application for controlling DC motors.
There are two Enable pins on l293d. Pin 1 and pin 9, for being able to drive the motor, the pin 1 and 9 need to be high. For driving the motor with left H-bridge you need to enable pin 1 to high. And for right H-Bridge you need to make the pin 9 to high. If anyone of the either pin1 or pin9 goes low then the motor in the corresponding section will suspend working. It’s like a switch.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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