Thermostat with clock-burst control of trip point

Details Thermostat with clock-burst control of trip point Thermostat with clock-burst control of trip point

2005-01-04

2005-01-04

Norman, Marc (Department: 3744)

Automatic temperature and humidity regulation

Motors

Fluid-operated

C236S04600F, C062S157000, C062S259200

Reexamination Certificate

active

06837441

ABSTRACT:
The present invention is directed at a thermostat using a clock burst to control a temperature trip point without the use of an external resistor. A clock burst is applied to a clock input pin from which a counter is used to count the number of pulses. The output of the counter is used to drive a DAC that sets the trip point. No external resistor is needed. This trip point provides a low pin count, flexibility, and high accuracy.

REFERENCES:
patent: 5586270 (1996-12-01), Rotier et al.

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