Industry Patents
Patent: 7291984
Method of Reducing RMS Load Voltage in a Lamp Using Pulse Width Modulation
(Click image for PDF of full patent)
| Patent Number: |
7291984 |
| Title: |
Method of Reducing RMS Load Voltage in a Lamp Using Pulse Width Modulation |
| Abstract: |
A method of converting a line voltage to an RMS load voltage in a lamp
includes modulating a load voltage with a pulse width modulation circuit
that is entirely within the lamp and provides an RMS load voltage to a
light emitting element of the lamp. Conduction is triggered in the pulse
width modulation circuit independently of a line voltage magnitude with a
time-based signal source that defines a duty cycle of the pulse width
modulation circuit suitable for the RMS load voltage.
|
| Country of Issue: |
US |
| First Named Inventor: |
Ballenger, Weyhrauch |
| Assignee: |
Osram Sylvania |
| Continuation or Divisional of: |
|
| International Classification: |
H05B 41/16 |
| US Classification: |
315/246 |
| Issue Date: |
11-06-2007 |
| Filing Date: |
02-04-2005 |
| Application : |
11/051927 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
7291984 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
7291984 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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