Industry Patents
Patent: 6541923
Electronic Ballasts
(Click image for PDF of full patent)
| Patent Number: |
6541923 |
| Title: |
Electronic Ballasts |
| Abstract: |
A lighting system (1) having a high intensity discharge lamp (16) and an
electronic ballast having a variable frequency generator (10) which is
arranged to vary the frequency of the ballast output over a range of
frequencies having a minimum frequency of 400 kHz; a reactance is included
in a joint operating circuit (22) in and between the ballast generator
(10) and lamp (16) such that the circuit resonate to provide a starting
voltage for the lamp at or above the minimum frequency. The arrangement
inhibits lamp flickering and improves overall lamp and system efficiency.
|
| Country of Issue: |
US |
| First Named Inventor: |
Tyson |
| Assignee: |
MicroLights |
| Continuation or Divisional of: |
|
| International Classification: |
H05B 41/16 |
| US Classification: |
315/224 |
| Issue Date: |
04-01-2003 |
| Filing Date: |
11-18-1999 |
| Application : |
09/831606 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
6541923 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6541923 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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