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:
May. 07, 2002
Filed:
May. 02, 2001
Wolfgang Millauer, Munich, DE;
Hilti Aktiengesellschaft, Schaan, LI;
Abstract
Pursuant to the invention, the capacitance of the smoothing capacitor in the direct current intermediate circuit, which normally must be designed relatively large in a main supplied direct current regulator, is divided into two capacitances, of which one capacitance (K ), responsible for the smoothing, continues to bridge the direct current side of rectifier (G), while the other capacitance (K ), which absorbs the demagnetizing energy of an inductive load (L), bridges the half-bridge of the bridge circuit, which is remote from the rectifier, wherein the connecting point between the two half-bridges of the bridge circuit is decoupled from a feeding point of the intermediate circuit by an additional third diode (D ). Due to the invention, feedback effects on the electrical network are reduced and high switching-on currents can be reduced by a large smoothing capacitance, which was previously required for other reasons.