Bourns Permanent Magnet Dc Motor

Increasing Permanent Magnet DC Motor Safety with Effective Protection Solutions

May 12, 2020
For safety reasons, the PM DC motors used in many vehicle applications need to include protection against a rotor lock or overload condition. Learn about the effects of overheating and the requirements for protection.

To increase the safety of PM DC motors used in vehicle applications, manufacturers typically need to add protection to the motor. In a new Bourns app note, designers learn about the two most common forms of thermal protection for DC motors. It also details the two critical motor conditions that can cause overheating, the key elements required for protection and the advantages of using PPTC thermistors.

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