A dual feedback control system maintains the temperature of an IC-chip near a set-point while the IC-chip dissipates a varying amount of electrical power. The first feedback circuit sends electrical power to an electric heater with a variable magnitude that compensates for changes in the IC-chip power....http://www.google.fr/patents/US7199597?utm_source=gb-gplus-shareBrevet US7199597 - Dual feedback control system for maintaining the temperature of an IC-chip near a set-point
Dual feedback control system for maintaining the temperature of an IC-chip ...