Industry Patents
Patent: 6909250
Apparatus and Method for Operating a Portable Xenon Arc Searchlight
(Click image for PDF of full patent)
| Patent Number: |
6909250 |
| Title: |
Apparatus and Method for Operating a Portable Xenon Arc Searchlight |
| Abstract: |
A xenon arc searchlight incorporates a high frequency/high efficiency
electronic circuit that allows lamp ballasting and charging of the system
battery to occur over a wide range of external DC power supplies. The
xenon arc searchlight has a converter circuit coupled to both the battery,
the ballasting circuit and the arc lamp for converting DC voltage from the
battery to pulse width modulated switched current to the arc lamp in which
the DC voltage is switched by parallel switching transistors. The
ballisting circuit is controllable by a switch to vary current supplied to
the converter circuit and hence intensity of the lamp which discrete steps
in intensity of the lamp are not visually perceptibly different between
one step to a next step in the sequence of steps of the current to the
lamp. The lamp, ballast, battery and charger are provided in a single
rugged package.
|
| Country of Issue: |
US |
| First Named Inventor: |
Jigamian, Pelling, Forschager, Kennedy |
| Assignee: |
Xenonics |
| Continuation or Divisional of: |
6702452 |
| International Classification: |
H05B 37/02 |
| US Classification: |
315/307 |
| Issue Date: |
06-21-2005 |
| Filing Date: |
04-16-2003 |
| Application : |
10/414935 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
6909250 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6909250 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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