Variable resistor with switching mechanism

Details Variable resistor with switching mechanism Variable resistor with switching mechanism

1989-05-30

1991-01-08

Reynolds, Bruce A.

Electrical resistors

Mechanically variable

With switch

338172, 338198, H01C 1050, H01C 1036

Patent

active

049839462

ABSTRACT:
A variable resistor having a switching function includes a base plate, a first electrode formed on the base plate, a second electrode formed on the base plate, a third electrode formed on the base plate, and a fourth electrode formed on the base plate simultaneously with the formation of the second electrode. A resistive element connects electrically the first and the second electrodes, a first switching element is provided and includes two brushes which slide on the surfaces of the third electrode and the resistive element, respectively. A second switching element is movable together with the first switching element and includes two brushes which slide on the surfaces of the first electrode and the fourth electrode, respectively.

REFERENCES:
patent: 4682142 (1987-07-01), Lohner et al.
patent: 4903003 (1990-02-01), Kuratani et al.

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