Temperature calibration device having reconfigurable...

Details Temperature calibration device having reconfigurable... Temperature calibration device having reconfigurable...

2006-06-14

2009-10-27

Jones, Melvin (Department: 3744)

Refrigeration

Using electrical or magnetic effect

Thermoelectric; e.g., peltier effect

C062S003700

Reexamination Certificate

active

07607309

ABSTRACT:
A temperature calibration device uses Peltier cells for heating and cooling. The Peltier cells are connected to a relay that connects the cells to each other in one configuration for heating and a different configuration for cooling. The Peltier cells also receive supply voltages having different magnitudes and polarities for heating and cooling. By changing the manner in which the Peltier cells are connected to each other and using different supply voltages for heating and cooling, the cells are able to operate closer to their specified maximum temperature differential without sacrificing the useful life of the cells.

REFERENCES:
patent: 5544487 (1996-08-01), Attey et al.
patent: 6230497 (2001-05-01), Morris et al.
Ferrotec America Corporation, “Thermoelectric Modules Reliability Report”, Issue 1, Apr. 2001, pp. 1-12.

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