Specifying Resistors for Motor Control Applications

Winkler, David; Chipman, Keith
November 2005
Power Electronics Technology;Nov2005, Vol. 31 Issue 11, p28
Trade Publication
The article reports that thin and thick film and solid-composition resistors provide different thermal dissipation and surge-withstand characteristics which impact their abilities to handle overcurrent and overvoltage conditions. The main cause of failure in resistors in motor control circuits is the power surge. One way of making sure that power surges do not cause resistor failure is to distinguish a surge condition from short-time overload.


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