Negative temperature coefficient thermistors

Details Negative temperature coefficient thermistors Negative temperature coefficient thermistors

1981-09-14

1985-07-23

Albritton, C. L.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

29612, 252518, 252519, 252520, 252521, H01C 704

Patent

active

045311102

ABSTRACT:
Inexpensive Mn or Mg ferrites may be used as negative temperature coefficient thermistors. Fabrication of devices with the desired high temperature coefficients is facilitated by a processing method which forms a thin layer of oxidized and high resistivity material on a low resistivity layer of ferrite material.

REFERENCES:
patent: 3124772 (1964-03-01), Newkirk
patent: 3510820 (1970-05-01), Jonker et al.
patent: 3622901 (1971-11-01), Ledran et al.
patent: 3795048 (1974-03-01), Tachibana et al.
patent: 3928837 (1975-12-01), Esper et al.
Herbert B. Sachse, Semiconducting Temperature Sensors and their Applications, 1975, pp. 59-87.

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