Compact programmable temperature detector apparatus

Details Compact programmable temperature detector apparatus Compact programmable temperature detector apparatus

1990-07-26

1992-02-04

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

Composite temperature-related paramenter

307310, 374170, 374183, H01K 308, H03K 526

Patent

active

050855263

ABSTRACT:
A programmable temperature detector for simple detection applications is described. The programmable temperature detector has three terminals and a plurality of temperature-transitions points from which to choose. A first terminal receives power from a supply, a second terminal receives a ground reference, and a third terminal provides an indication of an object's temperature crossing a selected temperature-transition point. The desired temperature transition point is specified by a single non-precision resistor coupled in series with the power terminal of the detector. The non-precision resistor and a power supply set a program signal, in the form of a current, into the power terminal of the detector. The programmable temperature detector comprises circuitry for quantizing the program signal into a discrete signal level and for selecting a temperature transition point in response.

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Pease, R. A., "A Fahrenheit Temperature Sensor", IEEE International Solid State Circuits Conference, Feb., 1984.

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