| 摘要 |
<p>There is disclosed a method of controlling a heater in a housing. The method comprises: sensing a temperature of the environment outside the housing; comparing the outside temperature to a desired temperature within the housing; turning the heater on for a controlled length of time in responsive to the desired temperature being greater than the outside temperature; sensing a temperature of the environment inside the housing; comparing the inside temperature to the desired temperature; and responsive to the inside temperature being higher than the desired temperature, turning the heater off. Circuitry for performing the method is also disclosed. <IMAGE></p> |
