Patent ID: 7960921

Claim:
An apparatus, comprising: a regulating unit, the regulating unit operable in a power mode and in a setback mode, the regulating unit configured to receive current from a voltage source, the regulating unit flows current onto an LED during the power mode; a switch control in electronic communication with the regulating unit to control the regulating unit to flow regulated current onto the LED during the power mode and to flow substantially no current onto the LED during the setback mode, wherein the switch control comprises: a current sensor unit, the current sensor unit generating a current sensor signal indicative of the current in the regulating unit, and wherein the switch control is configured to generate a switch control signal in response to the current sensor signal, the switch control signal toggles the switch between the ON state and the OFF state, wherein the regulating unit comprises: a switch, the switch having an ON state and an OFF state, the switch in the ON state allows the LED to receive current from the voltage source, the switch in the OFF state substantially disconnects the LED from the voltage source, the switch in electronic communication with the switch control such that the switch control may place the switch in the ON state and in the OFF state; an inductor, the inductor in electronic communication with the LED, the inductor in the electronic communication with the switch, the inductor stores current from the voltage source when the switch is in the ON state, current flows from the inductor onto the LED when switch is in the OFF state.