Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – Lumped type parameters
Patent
1996-03-26
1998-06-16
Regan, Maura K.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
Lumped type parameters
324661, 324681, 324687, 324688, G01N 2722, G01R 2726
Patent
active
057676860
ABSTRACT:
The present invention relates to a device for the contactless detection of the position of a moving webs. The web has on one side of the web a detector electrode covering its entire width and on the other side in the area of the web edges transmission electrodes fed by an oscillator in phase opposition, so that the capacitive couplings between the transmission electrodes and the detector electrode respond in opposing fashion to deviations of the web from the central position. The signal received by the detector electrode is processed by a current to voltage converter with a very small input impedance so that the potential of the detector electrode remains at zero, and virtually no capacitive displacement currents flow to a screening electrode In this way, the sensitivity of the measurement array is independent of the web width.
REFERENCES:
patent: 3312892 (1967-04-01), Parnes
patent: 3323699 (1967-06-01), Bricker, Jr.
patent: 3341774 (1967-09-01), Dyben
patent: 3812424 (1974-05-01), Abbe
patent: 4322678 (1982-03-01), Capots et al.
patent: 4719409 (1988-01-01), Dorman
patent: 4837500 (1989-06-01), Abbringh
patent: 4893071 (1990-01-01), Miller
patent: 4922181 (1990-05-01), Pullan
patent: 5134379 (1992-07-01), Maher et al.
patent: 5309110 (1994-05-01), O'Niel et al.
patent: 5394095 (1995-02-01), Kespohl
Brown Glenn W.
Fife Corporation
Regan Maura K.
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