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:
Apr. 15, 2003
Filed:
May. 11, 2001
Hubert Aigner, Taufkirchen/Trattnach, AT;
Alfred Hiesmayr, Sattledt, AT;
Friedrich Oberzaucher, Wels, AT;
Walter Pammer, Bad Hall, AT;
Fronius Schweissmaschinen Produktion GmbH & Co, KG, Pettenbach, AT;
Abstract
The invention relates to a voltage switching device ( ) consisting of a power rectifier ( ), a boost chopper ( ) having at least one storage element ( ), a transformer ( ), a switching device ( ), a control device ( ) and a plurality of mains leads ( to ), the power rectifier ( ) being connected to an energy source ( ) by the mains leads ( to ) and a consumer ( ) with a secondary winding ( ) of the transformer ( ), a power evaluating device ( ) supplied with voltage from the energy source ( ) being provided, the output of which is connected to the switching device ( ) or to the control device ( ). A boost chopper ( ) is provided respectively in a positive and a negative supply line ( ) from the power rectifier ( ), the storage elements ( ) provided in the boost choppers ( ) each being connected independently of one another to a respective high frequency inverter ( ), the high frequency inverters ( ) being connected respectively to a primary winding ( ) of one or more transformers ( ).