Instrument for producing harmonics-free periodic signals

Details Instrument for producing harmonics-free periodic signals Instrument for producing harmonics-free periodic signals

1992-11-04

1994-07-26

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25023116, H01J 314

Patent

active

053328965

ABSTRACT:
An instrument for obtaining harmonics-free signals with the aid of a periodic measurement graduation and a nonperiodic scanning graduation, wherein the centers of scanning graduation markings are staggered in accordance with a modified arcsin function.

REFERENCES:
patent: 3674372 (1972-07-01), Weyrauch
patent: 4176276 (1979-11-01), Kaul et al.
patent: 4225931 (1980-09-01), Schwefel
patent: 4595941 (1986-06-01), Avery
patent: 4602436 (1986-07-01), Ernst
patent: 4667096 (1987-05-01), Dangschat
patent: 4782229 (1988-11-01), Ernst
patent: 5009506 (1991-04-01), Spies
Abstract of Japanese application JP62225911, Patent Abstracts of Japan, vol. 012090, Mar. 24, 1988. p. 1/1.

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