The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 1993
Filed:
Dec. 03, 1991
Applicant:
Inventors:
Ralf Schweigert, Adelsdorf, DE;
Albrecht Donat, Dachsbach, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
328162 ; 328168 ; 328171 ; 328175 ; 328164 ;
Abstract
To detect amplitude deviations and/or offset deviations in two sinusoidal signals (S1, S2), electrically staggered from each other by 90.degree., both signals (S1, S2) are evaluated by way of threshold stages (K11, K12, K21, K22). The zero passages of the one signal (S1, S2) each indicate trigger time points (1.sub.up, 1.sub.down, 2.sub.up, 2.sub.down) for the amplitude of the other signal (S2, S1) in each instance. The output signals (X1, X2, A, A, B, B) of the threshold stages (K11, K12, K21, K22) are analyzed in the a regulating mechanism. Regulation can take place in accordance with the errors detected.