Humidity sensitive ceramic resistor

Details Humidity sensitive ceramic resistor Humidity sensitive ceramic resistor

1976-09-02

1978-04-25

Padgett, Benjamin R.

Electrical resistors

Resistance value responsive to a condition

Gas, vapor, or moisture absorbing or collecting

252518, 252519, 252520, 252521, 338 34, H01L 700

Patent

active

040865568

ABSTRACT:
There is provided a humidity sensitive ceramic resistor having high humidity activity, low electrical resistance, quick response rate to humidity and high stability with respect to time, temperature, humidity and electric load which is suited for humidity-controlling devices. The ceramic resistor comprises a ceramic composition comprising at least one component having a spinel type cubic symmetry selected from the group consisting of MgCr.sub.2 O.sub.4, FeCr.sub.2 O.sub.4, NiCr.sub.2 O.sub.4, CoCr.sub.2 O.sub.4, MnCr.sub.2 O.sub.4, CuCr.sub.2 O.sub.4, Mg.sub.2 TiO.sub.4, Zn.sub.2 TiO.sub.4, Mg.sub.2 SnO.sub.4 and Zn.sub.2 SnO.sub.4, and , if desired, at least one component selected from the group consisting of TiO.sub.2, ZrO.sub.2, HfO.sub.2 and SnO.sub.2.

REFERENCES:
patent: 3766098 (1973-10-01), Masuyama et al.
patent: 3926858 (1975-12-01), Ichinose et al.

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