Layer resistor element

Details Layer resistor element Layer resistor element

1979-04-17

1981-01-06

Albritton, C. L.

Electrical resistors

With base extending along resistance element

Resistance element coated on base

338176, 338314, 338320, H01C 1012

Patent

active

042439698

ABSTRACT:
A layer resistor element for use in a variable resistor has two resistance layers disposed upon each other on an insulating substrate, the lower resistance layer being provided with two comb-like sets of separating slots extending from opposite sides to form a meander-like resistance path, the widths and lengths of the meander turns varying in accordance with a given non-linear resistance characteristic. The upper resistance layer which is of a material of higher resistivity than the lower resistance layer covers the lower layer partly or totally and extends beyond the lower layer at one side thereof where it provides a path for a slider of the variable resistor.

REFERENCES:
patent: 3601744 (1971-08-01), Zandman
patent: 3723938 (1973-03-01), Gramm
patent: 3851293 (1974-11-01), Clayton
patent: 3889223 (1975-06-01), Sella et al.
patent: 3896284 (1975-07-01), Holmes
patent: 4012710 (1977-03-01), Ward et al.
patent: 4100525 (1978-07-01), Denes
patent: 4123741 (1978-10-01), Kiyono et al.
patent: 4123742 (1978-10-01), Nakamura et al.
"Laserstrahl-Trimmsystem fur Hybridsohaltungen", Elektronik-Industrie, Is No. 1/2, pp. 14, 15, 1974.
G. W. A. Dummer, "Variable Resisters and Potentiometers", Radio and Electronic Components, vol. 2, pp. 197 and 198, 1963.

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