Patent ID: 6675072
Filing Date: 2004-01-06
Classification: G05D

Abstract:
A thermo-electric assembly, comprising:a chamber; a thermo-electric device in thermal communication with the chamber, wherein the thermo-electric device forms part of a static H-bridge configuration; a first temperature sensor in thermal communication with the chamber; a second temperature sensor in thermal communication with an ambient environment; a variable power supply having a power output connected to the thermo-electric device and having a control input; a linear driver having an output connected to the thermo-electric device; a controller responsive to the first and second temperature sensors and controlling the thermo-electric device, wherein the controller connects to the control input of the variable power supply, wherein the controller drives the thermo-electric device with the linear driver when a temperature of the chamber is within a predetermined temperature range of a temperature set point for the chamber, and wherein the controller drives the thermo-electric device with the variable power supply when the temperature of the chamber is outside the predetermined temperature range of the temperature set point for the chamber.