Electrical resistors – Resistance value responsive to a condition – Current and/or voltage
Patent
1980-08-28
1982-11-02
Albritton, C. L.
Electrical resistors
Resistance value responsive to a condition
Current and/or voltage
315 8, 338 22R, 361150, H01C 702
Patent
active
043575900
ABSTRACT:
A component consisting of two coupled PTC thermistors with the first thermistor having a lower cold resistance than the second thermistor and the first thermistor having a higher resistance at the operating temperature than the second thermistor. According to the invention, the electric connection to the second thermistor is made directly by solely mechanical contacts to the surface of the ceramic thermistor body. This means a considerable simplification during manufacture, as the second thermistor need not be provided with electrode layers.
REFERENCES:
patent: 3376451 (1968-04-01), Mears
patent: 3614519 (1971-10-01), Figlewicz
patent: 3845442 (1974-10-01), Ihaya et al.
patent: 3878501 (1975-04-01), Moorhead et al.
patent: 3898422 (1975-08-01), Fuller et al.
patent: 4024427 (1977-05-01), Belhomme
Albritton C. L.
Miller Paul R.
U.S. Philips Corporation
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