Temperature controller for low voltage thermoelectric cooling or

Details Temperature controller for low voltage thermoelectric cooling or Temperature controller for low voltage thermoelectric cooling or

1996-07-12

1997-11-25

Doerrler, William

Refrigeration

Using electrical or magnetic effect

Thermoelectric; e.g., peltier effect

62159, F25B 2102

Patent

active

056899572

ABSTRACT:
A control system for a thermoelectric device to maintain the temperature in a storage compartment at a set point. The system includes input terminals for receiving a DC voltage and output terminals for connecting to the thermoelectric device. First and second switches are provided and coupled to the terminals for connection when enabled by the application of the DC voltage. The system further includes a first diode network connected between the first and second switches and enabling the second switch when the first diode network is enabled; a coupling device operatively connected to the first diode network to enable the first diode network when the coupling device is enabled; a sensor device providing an output indicative of the temperature in the storage compartment; a programmable control device receiving the output from the sensor device and providing an output to the coupling device to enable the coupling device, the output from the programmable control device being determined by the amount of deviation of the sensed temperature in the storage compartment from the set point temperature.

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