Keyboard printed circuit film and method of fabrication

Details Keyboard printed circuit film and method of fabrication Keyboard printed circuit film and method of fabrication

1985-09-18

1987-04-14

Sipos, John

Electrical resistors

With base extending along resistance element

Resistance element and/or terminals printed or marked on base

29846, 338309, H01C 1012

Patent

active

046582355

ABSTRACT:
A plurality of switching points are connected in groups to respective teral contact points via conductor strips on a keyboard printer circuit film. In order to achieve suppression of the coupling capacitances with simple means, decoupling resistor strips are printed between adjacent pairs of the conductor strips and are connected with the said conductor strips. The decoupling resistor strips consist of the same carbon resistor layer material as the terminal contact points.

REFERENCES:
patent: 3384931 (1968-05-01), Cochran
patent: 3766308 (1973-10-01), Loro
patent: 4331949 (1982-05-01), Kagawa

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