Rotational angle detector having grounded slit plate

Details Rotational angle detector having grounded slit plate Rotational angle detector having grounded slit plate

1990-03-14

1991-07-09

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250237G, G01D 534

Patent

active

050308254

ABSTRACT:
A rotational angle detector provided in an engine ignition distributor. Light emitting and the light receiving sections are disposed in opposed positions on the two sides of a disk fixed to a rotary shaft, and a pair of slit plates are respectively disposed in front of the light emitting and the light receiving sections with the disk interposed between the slit plates. At least one of the slit plates is formed of an electroconductive material and is grounded.

REFERENCES:
patent: 4342909 (1982-08-01), Accattino
patent: 4775787 (1988-10-01), Ushiyama
patent: 4906838 (1990-03-01), Sogabe et al.
patent: 4943717 (1990-07-01), Ikeuchi et al.

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