Industry Patents

Patent: 7271550

Dimmer Circuit Arrangement

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Patent Number: 7271550 
Title: Dimmer Circuit Arrangement 
Abstract: A dimmer circuit arrangement is disclosed including a second control circuit (40) for controlling the operation of a triac (50) for delivering current to a load (60), and a first control circuit (10) for controlling the operation of an IGBT power semiconductor switch (20) for controlling the rate of rise of load voltage. The first control circuit also controls the operation of the second control circuit.  
Country of Issue: US 
First Named Inventor: Vanderzon 
Assignee: Clipsal 
Continuation or Divisional of:  
International Classification: G05F 1/00 
US Classification: 315/291 
Issue Date: 09-18-2007 
Filing Date: 03-25-2003 
Application : 10/508589 
Notes:  
Link to Patent at freepatentsonline.com: 7271550 at Freepatentsonline 
Link to World Patent Family1: World Patent Family at European Patent Office 
Link to Google Patents1: 7271550 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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