Temperature protection system for electronic devices

摘要

An electronics system includes an electronic device, a power source and a temperature control switch. An actuator having a shape memory alloy is attached to the temperature control switch and moves the temperature control switch between an open position preventing a current flow between the power source and the electronic device, and a closed position permitting current flow between the power source and the electronic device. The shape memory alloy transforms shapes upon the ambient temperature falling below a low critical temperature or rising above a high critical temperature to move the temperature control switch into one of the closed position to permit current flow to the electronic device or the open position to prevent current flow to the electronics device respectively.