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zBot: 10-A Power Stage for DC Motor

zBot: 10-A Power Stage for DC Motor

If you look at the chassis of the zBot vehicle, you’ll find two parts requiring intelligent control: the steering servo and the DC motor.

The so called H-bridge is the normal circuit for electronic control of revolution speed and direction. The DC motor of a Tamiya car is powerful enough to propel zBot at up to 20 miles per hour. The motor then consumes more than 10 A, so we choose high-current power MOSFETs for the driver stage. There are lots of different devices to choose from.

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