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Overpayment. A transactional input document processed to recover an excessive payment. (Uses transaction codes O1, O2 and O3.) AF: Personnel Action Form. The form required to initiate or change appointment/payment of all salaried employment, faculty timecard employment, courtesy appointments and non-service payments. (Also see appointment forms.)

A type of mechanism that protects load circuitry by preventing output voltage from exceeding its current, preset level. Whenever output voltage is lessened, input power is recycled to maintain the output of a power supply.

Over Voltage Protection. A feature or circuit of a SMPS for protecting the SMPS and the load if an abnormal high voltage occurs to the output.