Switch and relay using shape memory alloy

Details Switch and relay using shape memory alloy Switch and relay using shape memory alloy

1998-06-12

2000-10-17

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With longitudinally expansible solid element

337 12, 337 14, 337140, 60527, 60528, H01H 6106, H01H 3746, H01H 3750

Patent

active

061338168

ABSTRACT:
A novel shape memory alloy electrical switch is disclosed, including both momentary and especially a latching relay. The switch/relay disclosed is particularly useful in low power control of appliances, including i.a. refrigerators. Used with a microprocessor, microcontroller, or like device to control the shape memory alloy switch/relay, an adaptive control routine may be included which facilitates an especially low-power dissipation, highly effective appliance control module, especially suitable for refrigerators. The disclosed refrigerator control module can be manufactured at low cost with high reliability.

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