Saturday, August 21, 2010

A switch used to control temperature in a room, an oven or steam iron?

thermostatA switch used to control temperature in a room, an oven or steam iron?
bi-metallic strip (two metals with different rates of expansion


it curves when heat is applied)





serves as a thermostat (temperature sensitive switch)


as someone else just said





Other operating mechanisms





a Bourdon tube (coiled pipe with liquid inside)





a sealed diaghragm (often found in a room thermostat ... gets ';fatter'; as the temperature increases)

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