Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1987-06-24
1989-01-24
Leung, Philip H.
Electrical transmission or interconnection systems
Switching systems
Condition responsive
307140, 361165, H01H 3500
Patent
active
048002925
ABSTRACT:
A temperature sensing circuit including a temperature sensing element located at a medium to sense the temperature of the medium. The sensing element is a resistive element with a range of resistive values corresponding to a range of sensed temperatures. The sensing element is connected to circuitry for detecting variations of the resistance of the element. The circuitry provides an output signal of one state when the element resistance increases beyond a first value and provides an output signal of a second state when the element resistance decreases beyond a second value.
REFERENCES:
patent: Re31502 (1984-01-01), Gingras
patent: 3211214 (1965-10-01), Chambers
patent: 3388860 (1968-06-01), Kruper
patent: 3415448 (1968-12-01), Williams et al.
patent: 3426969 (1969-02-01), Anderson, Jr.
patent: 3512077 (1970-05-01), Evalds
patent: 3541359 (1970-11-01), Lewis
patent: 3616846 (1971-11-01), Wills
patent: 3624455 (1971-11-01), Hillman
patent: 3684172 (1972-08-01), Evalds
patent: 3743182 (1973-07-01), Harmon et al.
patent: 3809960 (1974-05-01), Jossic
patent: 3935519 (1976-01-01), Pfarrer et al.
patent: 4015182 (1977-03-01), Erdman
patent: 4017747 (1977-04-01), Sheng
patent: 4041542 (1977-08-01), Pfarrer et al.
patent: 4086558 (1978-08-01), Peionby et al.
patent: 4135402 (1979-01-01), Wakamatsu et al.
patent: 4210823 (1980-07-01), Kabat et al.
patent: 4240077 (1980-12-01), Hughes et al.
patent: 4254906 (1981-03-01), Hayes
patent: 4320309 (1982-03-01), Griffiths et al.
patent: 4338511 (1982-07-01), Six
patent: 4371272 (1983-02-01), Iwasaki
"Low-Cost Temperature Controller Built with Timer Circuit" by G. R. Lewis, Electronic Design 17, Aug. 16, 1975, p. 82.
"Control with OPAMP Comparator" by Williams, EDN Magazine, Jun. 10, 1977.
Elektor, vol. 9, No. 7/8, Jul./Aug. '83, 7-66, 7-67, Canterbury, Kent, Great Britain, "Interior Temperature Control for Cars".
Electronic Design, vol. 30, No. 16, Aug. '82, p. 217, Denville, N.J., U.S.A.: R. S. Rohella, "Dual-Time Chip Control Temperature while Monitoring Liquid Level".
Jennings Derek S.
Leung Philip H.
Ranco Incorporated
LandOfFree
Temperature sensing circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Temperature sensing circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature sensing circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-420563