Humidity sensitive resistor

Details Humidity sensitive resistor Humidity sensitive resistor

1983-03-21

1984-04-10

Reynolds, B. A.

Electrical resistors

Resistance value responsive to a condition

Gas, vapor, or moisture absorbing or collecting

73 73, 733365, 73 27R, 324 65R, 338314, 338308, 422 98, H01L 700

Patent

active

044424221

ABSTRACT:
A humidity sensitive resistor, comprising a pair of detecting electrodes (2) and (3) formed on an insulating substrate (1), and a humidity sensitive film (4) formed to coat on this detecting electrodes, the humidity sensitive film (4) being made of an integrated structure of a first layer macromolecular resin film (5) containing a polyvinyl alcohol polymer and an electrolyte and a second layer of hygroscopic macromolecular resin film (6) covering on the surface of the first layer, and humidity being detected with the aid of a change of the resistance value of this humidity sensitive film (4).

REFERENCES:
patent: 4167725 (1979-09-01), Shimizu et al.
patent: 4263576 (1981-04-01), Murata et al.

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