Patent ID: 9605858
Date: 2017-03-28
CPC Classifications: B01D,F24D,F24F,G05B,G05D,H01R,H04W,Y02B,Y02D,Y10T

Claim:
1. A thermostat for controlling a heating, ventilation, and air conditioning (HVAC) system, the HVAC system having one or two HVAC transformers, one or more control wires for controlling one or more HVAC functions, and one or two power return wires, each of which is electrically connected to one of the one or two HVAC transformers, the thermostat comprising: two power return wiring terminals for making electrical connections to the one or two power return wires; a switching circuit for: one or more solid state switching components adapted and arranged to turn on and off the one or more HVAC functions; a processor adapted and configured to send DC signals for turning on and off the one or more HVAC functions using the one or more solid state switching components; and one or more isolators positioned and adapted to electrically isolate the processor from the one or more solid state switching components, wherein: