Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With electromagnetic field
Patent
1986-02-14
1989-05-02
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With electromagnetic field
324143, G01R 1130
Patent
active
048272108
ABSTRACT:
In a cross-coil moving-magnet measuring instrument having an approximately cylindrical core developed as winding form, a first coil and a second coil are wound crosswise one over the other. The second coil is necessarily arranged over the first coil in the region of the ends of the winding form and thus has a greater height of turn than the latter. Within the core there is furthermore mounted a moving magnet whose pointer shaft is brought out from an extension of the core. In order to reduce the errors in linearity of this measuring instrument and to permit a display over several quadrants, spacing elements are arranged on the core, they serving to guide turns of the coil, spaced from the extension of an core, around the latter in planes which are at right angles to each other. In combination herewith, the core is shaped in the winding region of the first coil with a larger diameter, which is of such a size with respect to the diameter of the winding region of the second coil that the average lengths of turn of the two coils are in correspondence.
REFERENCES:
patent: 3168689 (1965-02-01), Gelenias
patent: 3302191 (1967-01-01), Ziegler
patent: 3327208 (1967-06-01), Allen
patent: 3460038 (1969-08-01), Ziegler
patent: 4492920 (1985-01-01), Reenstra
patent: 4633174 (1986-10-01), Lindig et al.
Duffait Roland
Lindig Christian
Eisenzopf Reinhard J.
Farber Martin A.
Miele Anthony L.
VDO Adolf Schindling AG
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