Dual feedback control system for maintaining the temperature...

Details Dual feedback control system for maintaining the temperature... Dual feedback control system for maintaining the temperature...

2007-04-03

2007-04-03

Hollington, Jermele (Department: 2829)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

C165S080300

Reexamination Certificate

active

10780417

ABSTRACT:
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. The second feedback circuit passes a liquid refrigerant to an evaporator, which is connected to the heater, with a variable flow rate that reduces electrical power usage in the heater over that which occurs if the flow rate is fixed.

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patent: 6362944 (2002-03-01), Tustaniwskyj et al.
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patent: 6802368 (2004-10-01), Getchel et al.
patent: 2002/0062954 (2002-05-01), Getchel et al.
patent: 2003/0217558 (2003-11-01), Wall et al.

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