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:
Jul. 23, 1985
Filed:
Dec. 02, 1982
Eberhard Schmid, Dormitz, DE;
Robert Brehler, Erlangen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A device for stabilizing the voltage between two conductors of an a-c network comprises a thyristor switching circuit and a choke element connected in series between the conductors and in parallel to a control circuit. The control circuit activates the thyristor circuit to connect the two conductors upon detecting equality between a predetermined reference value and a sum of two areas under a half-wave portion of the voltage-time curve of the two conductors, the first area being measured by an integrator and extending from the beginning of the half-wave period to a current instant and the second area being calculated by analog arithmetic components and extending from the current instant to the end of the half-wave period.