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. 19, 2011
Filed:
May. 06, 2008
Simon Richard Greenwood, Altrincham, GB;
Stephen Soar, Garstang, GB;
Simon Richard Greenwood, Altrincham, GB;
Stephen Soar, Garstang, GB;
Other;
Abstract
Ballasts with crest factor control are provided. During a transition to a given half cycle steady state, the current provided to reach the steady state is varied, such as turned off for a short period. This reduction during the transition may reduce or eliminate overshoot. The crest factor control is active, such as altering the timing or number of on/off/on switchings used to control crest factor. The active control may be based on any information, such as time, lamp voltage feedback, or other lamp dependent feedback.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile