Patent ID: 9620991
Date: 2017-04-11
CPC Classifications: H02J,H02M

Claim:
1. An HVAC control device for controlling an HVAC component, the HVAC control device comprising: a controller; a charge storage device for storing a charge, wherein the charge storage device powers the controller at times; an input for receiving an AC signal from an AC power source; a switch having an “on” state and an “off” state, wherein the switch is configured to switch power from the AC power source “on” and “off” to the HVAC component; and the controller is configured to control the switch so as to activate and deactivate the HVAC component, the controller is further configured to control the switch when the HVAC component is activated for power stealing, wherein for power stealing, the controller is configured to set the switch to an “on” state when the AC signal is above a first threshold, and to temporarily set the switch to an “off” state when the AC signal is below a second threshold, wherein power from the AC signal is made available for charging the charge storage device when the switch is in the “off” state and is not made available for charging the charge storage device when the switch is in the “on” state.