Thermistor with more stable beta

Details Thermistor with more stable beta Thermistor with more stable beta

1978-08-23

1980-11-04

Padgett, Benjamin R.

Compositions

Electrically conductive or emissive compositions

Metal compound containing

252520, 338 22R, H01B 106

Patent

active

042319021

ABSTRACT:
A thermistor composition containing zinc oxide, manganese oxide, and cobalt oxide in selected ternary ratios together with small portions of titanium oxide. The titanium oxide addition to the selected ternary ratios of the other three oxides provides a more constant temperature coefficient (beta) over a range of about 300.degree. F. that includes room temperature.

REFERENCES:
patent: 3015633 (1962-01-01), Humbert et al.
patent: 3341473 (1967-09-01), Loch
patent: 3430336 (1969-03-01), Riddel
patent: 3469224 (1969-09-01), Riddel et al.
patent: 3652463 (1972-03-01), Riddel
R. J. Yu, "Thermistor with Much Improved Consistency in its Temperature C efficient of Resistance", Research Disclosure item #16129, Col. 2, p. 43, Sep. 10, 1977.
Rao et al., Transition Metal Oxides-Crystal Chemistry, Phase Transition and Related Aspects, NSRDS, National Bureau of Standards, Jun. 1974.

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