Free wheeling diode

Roff said:

One fine point: If the motor is some distance from the driver, put the diode at the driver, not at the motor. if you put it at the motor, the inductance of the leads can still generate a pretty serious flyback voltage at the driver. You're trying to protect the driver, not the motor (duh!).

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dknguyen said:

Huh, I never thought about that. But then again, the motor is pretty far away from the PCB via wires anyways so it's not exactly easy to stick a diode next to the motor.

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saturn1bguy said:

You may want a discrete device right at the motor...
Corey

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Roff said:

If you put it at the motor, the inductance of the leads can still generate a pretty serious flyback voltage at the driver.

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