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Why do we need one or more recovery diodes for controling a DC motor?

It avoids overvoltage at turning off the motor.

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It avoids that the motor runs in the wrong direction.

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In this way, we can use a higher frequency for the motor than for the controller.

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In this way, we can use a higher current for the motor than the controller can deliver.

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In this way, we can use a higher voltage for the motor than for the controller.

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It avoids overheating of the motor.

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