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Thermostat relay control

  • US 7,673,809 B2
  • Filed: 08/30/2005
  • Issued: 03/09/2010
  • Est. Priority Date: 08/30/2005
  • Status: Active Grant
First Claim
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1. A thermostat for managing one or more conditions in a controlled space, the thermostat comprising:

  • a temperature sensing element for sensing a current sensed temperature, resulting in a current sensed temperature value;

    a relay;

    a controller coupled to the temperature sensing element and the relay, the controller applying an electrical pulse to the relay to selectively actuate the relay, wherein the controller is configured to reduce power consumption by setting at least one parameter of the electrical pulse to a value that is dependent on the current sensed temperature value such that the electrical pulse is sufficient to actuate the relay without undue waste of energy.

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