Electrical resistors – Resistance value responsive to a condition – Plural conditions
Patent
1984-09-18
1987-03-10
Goldberg, E. A.
Electrical resistors
Resistance value responsive to a condition
Plural conditions
338 22R, 338 35, H01C 700
Patent
active
046493646
ABSTRACT:
An environment sensor includes an insulating base board, a first electrode made of a material which can provide an electrical indication of the value of a first physical quantity and formed on the insulating base board, a second electrode formed of electrically conducting material and formed on the insulating base board, and a mass of metal oxide semiconductor material which can provide an electrical indication of the value of a second physical quantity, layered on the base board over the first and second electrodes. Thus, the first electrode by itself constitutes a sensor subsystem which can sense the value of the first physical quantity, which may preferably be temperature, while the first and second electrodes together with the mass of metal oxide semiconductor material constitute a sensor subsystem which can sense the value of the second physical quantity, which may preferably be humidity.
REFERENCES:
patent: 4007435 (1977-02-01), Tien
patent: 4033169 (1977-07-01), Fujishiro et al.
Horiike Sumio
Nakano Hiroyuki
Tanahashi Maki
Goldberg E. A.
Lateef M. M.
Omron Tateisi Electronics Co.
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