You can use discrete transistors to make this circuit, but for this tutorial, we will be using the L298 H-Bridge IC. It is called an H-bridge because it uses four transistors connected in such a way that the schematic diagram looks like an "H." H-bridges are used in many different applications, one of the most common being to control motors in robots. An H bridge is an electronic circuit that can drive the motor in both directions. To control the direction of the spin of DC motor, without changing the way that the leads are connected, you can use a circuit called an H-Bridge. If you switch the leads, the motor will rotate in the opposite direction. If you connect these two leads directly to a battery, the motor will rotate. DC motors normally have just two leads, one positive and one negative. By connecting an L298 bridge IC to an Arduino, you can control a DC motor.Ī direct current, or DC, motor is the most common type of motor.
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