Pressure-sensitive resistors

Details Pressure-sensitive resistors Pressure-sensitive resistors

1978-12-26

1979-07-31

Albritton, C. L.

Electrical resistors

Mechanically variable

Deformable

338100, 338109, H01C 1010, H01C 1012

Patent

active

041632044

ABSTRACT:
The pressure-sensitive resistor comprising an electroconductive elastomer, in which an electroconductive particulate material is dispersed, two electrodes placed on the opposing surfaces of the elastomer, a means for providing a compressive force between the electrodes and a means for adjusting the compressive force, works on a novel principle that the elastomer composite exhibits a positive coefficient in the curve of compression vs. resistance relationship when the compressive force is varied in a region exceeding an inversion point at which the resistance of the elastomer as measured in the direction of compression is minimal. The coefficient in this positive region is smaller than in the ordinary negative region, so that the variable resistance of the resistor can be controlled very delicately together with the decreased contribution of the uncontrollable contact resistance.

REFERENCES:
patent: 2951817 (1960-09-01), Myers
patent: 3386067 (1968-05-01), Costanzo

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