Temperature control apparatus

Details Temperature control apparatus Temperature control apparatus

1993-09-16

1995-01-17

Wayner, William E.

Automatic temperature and humidity regulation

Motors

Electric

165 26, 374171, 364557, G01K 700

Patent

active

053819543

ABSTRACT:
A temperature control apparatus and method which utilizes a characteristic of a temperature detection device which detects temperature over a wide range of changing temperature and makes it possible to control a unit by detecting a wide range of changing temperature of the unit using the single temperature detection device. A temperature detection circuit outputs a voltage corresponding to the resistance value of the temperature detection device, whose resistance value varies with changes in temperature, which voltage is A/D (analog-to-digital) converted into a digital step value. This digital step value is converted to a temperature value using a predetermined mathematical relationship. The temperature control is executed using the converted temperature value and a desired temperature value in the same data form as the converted temperature value.

REFERENCES:
patent: 4161880 (1979-07-01), Prosky
patent: 4206872 (1980-06-01), Levine
patent: 4484050 (1984-11-01), Horinouchi et al.
patent: 4755958 (1988-07-01), Mizuhara
patent: 5115967 (1992-05-01), Wedekind

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