Industry Patents
Patent: 6734637
Hot-Restrike Ignition System for a High-Frequency High-Intensity Discharge Lamp Assembly
(Click image for PDF of full patent)
| Patent Number: |
6734637 |
| Title: |
Hot-Restrike Ignition System for a High-Frequency High-Intensity Discharge Lamp Assembly |
| Abstract: |
A hot-restrike ignition system for a high-frequency high-intensity
discharge lamp includes a resonant circuit that is connectable across the
lamp in parallel with a ballast circuit that is used to provide
steady-state current for the lamp. The resonant circuit is temporarily
energizable for producing a voltage sufficiently high for hot-restrike
ignition of the lamp. The resonant circuit has two parts. The first part
provides a voltage waveform with frequency approximating the steady-state
voltage frequency and amplitude sufficient when combined with the
steady-state voltage to produce glow discharge, and the second part
provides a voltage waveform that is lower in repetition rate but of
sufficiently high voltage to initiate hot-restrike ignition in the lamp.
|
| Country of Issue: |
US |
| First Named Inventor: |
Ellams |
| Assignee: |
Power Gems |
| Continuation or Divisional of: |
|
| International Classification: |
H05B 37/02 |
| US Classification: |
315/224 |
| Issue Date: |
05-11-2004 |
| Filing Date: |
01-25-2002 |
| Application : |
10/056580 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
6734637 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6734637 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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