High-side current monitor operates at high voltage


Posted on Aug 1, 2012

The simplest technique for measuring current in an actuator or a motor is to monitor the ground current with a resistive element between the load and the ground. Because the device and its associated electronics share a ground potential, you need to amplify only the ground-current signal. This approach, however, does not detect device short circuits to ground, which can overload the high-side drive circuitry.






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