Apparatus for detecting the amplitude and phase of an a.c....

Details Apparatus for detecting the amplitude and phase of an a.c.... Apparatus for detecting the amplitude and phase of an a.c....

G - Physics

01

R

G01R 19/00 (2006.01) G01R 19/06 (2006.01) G01R 25/00 (2006.01) G01R 31/42 (2006.01)

Patent

CA 2133864

An apparatus for detecting the amplitude and phase of an a.c. signal detects the a.c. signal with signal detection means (4), calculates an a.c. signal that is phase-shifted by the amount of the phase characteristic ~ of the calculation circuit (14) at the frequency of the detected a.c. signal, multiplies the detected a.c. signal by cos ~, and multiplies by 1/sin ~ the multiplication result subtracted by the phase-shifted a.c. signal.

L'invention est un appareil de détection de l'amplitude et de la phase d'un signal alternatif qui détecte un signal alternatif au moyen d'un dispositif de détection (4), calcule un signal alternatif déphasé d'une valeur égale à la caractéristique de phase ~ du circuit de calcul (14) à la fréquence du signal alternatif détecté, multiplie ce dernier par cos ~, et multiplie par 1/sin ~ le résultat de la multiplication moins le signal alternatif déphasé.

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