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IP.com Disclosure Number: IPCOM000007129D
Original Publication Date: 1994-Feb-01
Included in the Prior Art Database: 2002-Feb-27

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Michael S. Kemmet


In many applications, when driving inductive type loads, it is necessary to detect faulted load condi- tions. There are a variety of faults that can occur, such as faults to ground, to power, or a shorted load. The impedance of these faults can range From near zero ohms (hard short) up to higher levels that are still less than the circuit impedance (sot? shorts). In various applications, different types of faults may require a different type ofcorrective action. In these situations, detection ofover current alone cannot be relied upon to identify the exact type of fault. For these applications, a flyback voltage detector can be advantageous.