Patent ID: 8203818

Claim:
An electronics system comprising: an electronic device; a power source selectively coupled to said electronic device for supplying an electrical current to said electronic device; a temperature control switch interconnecting said power source and said electronic device and moveable between an open position preventing current flow between said power source and said electronic device and a closed position permitting current flow between said power source and said electronic device; and an actuator coupled to said temperature control switch and moveable in response to a change in temperature to move said temperature control switch between said open position and said closed position, wherein said actuator is configured for moving said temperature control switch into at least one of said closed position when the temperature adjacent said electronic device falls below a low critical temperature of said electronic device, and said open position when the temperature adjacent said electronic device rises above a high critical temperature of said electronic device; wherein said actuator includes a shape memory alloy having a first end coupled to said temperature control switch and a second end attached to an anchor point; and wherein said shape memory alloy expands and contracts against said anchor point to move said first end of said actuator.