Industry Patents

Patent: 5506480

Paired Dimmers for Controlling Harmonic Currents

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Patent Number: 5506480 
Title: Paired Dimmers for Controlling Harmonic Currents 
Abstract: A control system for a plurality of switched loads includes an AC line and a neutral wire and a pair of loads coupled in parallel between the AC line and the neutral. The switched loads may be operated so that one load in the pair operates in forward phase control mode and the other load in the pair operates in reverse phase control mode. This reduces harmonic current in the neutral wire otherwise resulting from odd order harmonics generated by the switching of AC current into the load during normal operation.  
Country of Issue: US 
First Named Inventor: Carlson, Pearlman 
Assignee: Entertainment Technology 
Continuation or Divisional of:  
International Classification: G05F 1/00 
US Classification: 315/292 
Issue Date: 04-09-1996 
Filing Date: 11-12-1993 
Application : 150491 
Notes:  
Link to Patent at freepatentsonline.com: 5506480 at Freepatentsonline 
Link to World Patent Family1: World Patent Family at European Patent Office 
Link to Google Patents1: 5506480 at Google Patents 

 

1. The Google Patents and World Patent Family links will likely not work until a few weeks
after the patent has issued - they take a while to get new patents in their systems.

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