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. 08, 2008
Filed:
Feb. 09, 2005
Detlef Schulz, Altenriet, DE;
Detlef Schulz, Altenriet, DE;
Gerhard Kurz, Althengstett, DE;
Abstract
An apparatus for controlling the power of an AC voltage supplying an electrical consumer () by phase control and for reducing harmonics caused by said phase control, particularly within a range of 4 kHz, preferably within a range of the third harmonic, comprising a first switching element () (TRIAC) connected in series with the consumer () and driven by a control device () for performing a phase control. A second switching element () connected in series with a resistor element () is provided in parallel to the first switching element (). The control device () is adapted to drive the second switching element () shortly before the first switching element () into its conducting state for a short time period.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile