Over-voltage protection arrangement for a low voltage power supply

Abstract

An electrical power supply includes a power input interconnected with a power source that supplies input power having a voltage exceeding a predetermined voltage threshold, e.g. a low voltage threshold. A power conversion arrangement converts the input power to output power having a voltage at or below the voltage threshold, and the low voltage power is supplied to a power outlet. An over-voltage protection arrangement, in the form of a voltage sensing circuit, is operable to detect the voltage of output power from the power supply and to discontinue the supply of power to the power outlet in the event power supplied to the power outlet has a voltage that exceeds the low voltage threshold. The over-voltage protection circuit is incorporated in a circuit board adapted to be plugged into a primary circuit board of the power supply. The over-voltage protection circuit establishes a path through which power is communicated from the power conversion arrangement to the power outlet, and creates a short circuit condition when power supplied to the power outlet exceeds the low voltage threshold.

Dependencies are inferred from the claim text.