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:
Feb. 16, 1988
Filed:
Oct. 01, 1986
Claude Boisdon, Avon, FR;
Jeumont-Schneider Corporation, Puteaux cedex, FR;
Abstract
A system for supply of direct current to at least two electrical loads having a common polarity, especially for power supply to an arc furnace with several electrodes or to plasma generators, comprises a set of load-controlled rectifiers (7) arranged in a Graetz bridge (A, B, C), in parallel upon a common alternating current power supply (5, 6). The half-bridges (A.sub.2, B.sub.2, C.sub.2) situated on the common-polarity side have a common dephasing control voltage, while the half-bridges (A.sub.1, B.sub.1, C.sub.1) situated on the other side are each controlled individually. This mechanism can be used in particular for power supply to arc furnaces or plasma torches.