Industry Patents
Patent: 6628089
Extraction of Accessory Power from a Signal Supplied to a Luminaire from a Phase Angle Dimmer
(Click image for PDF of full patent)
| Patent Number: |
6628089 |
| Title: |
Extraction of Accessory Power from a Signal Supplied to a Luminaire from a Phase Angle Dimmer |
| Abstract: |
Power for one or more luminaire accessories is extracted from a series of
lamp operating pulses provided by a phase angle dimmer. A DC power supply
is connected to the output of the dimmer to develop and store DC accessory
power. A lamp controller is connected to the output of the dimmer to
transfer power from the lamp operating pulses to the lamp. The lamp
controller has a variable pulse transfer characteristic for providing lamp
power without lamp performance degradation caused by accessory power
variations. The variable pulse transfer characteristic can be implemented
by a switching device that interrupts or blocks selected portions of the
lamp operating pulses. The pulse transfer characteristic maintains
constant apparent lamp brilliance independent of variations in accessory
power requirements. In an off or in a preheat condition, power transfer to
the lamp is reduced to prevent emission of a visible light beam. In a full
brilliance condition, the lamp operating pulses are essentially unmodified
by the lamp controller.
|
| Country of Issue: |
US |
| First Named Inventor: |
Suomi |
| Assignee: |
Electronic Theatre Controls |
| Continuation or Divisional of: |
|
| International Classification: |
H05B 37/02 |
| US Classification: |
315/194 |
| Issue Date: |
09-30-2003 |
| Filing Date: |
02-01-2002 |
| Application : |
10/061689 |
| Notes: |
|
| Link to Patent at freepatentsonline.com: |
6628089 at Freepatentsonline |
| Link to World Patent Family1: |
World Patent Family at European Patent Office |
| Link to Google Patents1: |
6628089 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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