Circuit device for dimming a discharge lamp
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United States of America Patent
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May 21, 2002
Grant Date -
N/A
app pub date -
Nov 1, 2000
filing date -
Nov 2, 1999
priority date (Note) -
Expired
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Abstract
The light output of a lighting arrangement is adjustable at two levels by, for example, 'toggling'. During a predetermined time interval immediately after ignition, the lamp is supplied with additional power to heat up. Immediately after stationary conditions have been reached, the light output is automatically adjusted to the lowest of the two levels. During the predetermined time interval, the light output is also controlled so as to be at the lowest of the two levels, so that relatively large changes in the level of the light output during the predetermined time interval, and immediately after it, are prevented.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- KONINKLIJKE PHILIPS ELECTRONICS N.V.;MDS ANALYTICAL TECHNOLOGIES (US) INC
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Smulders, Herman Adrianus Godefridus Severinus | Eindhoven, NL | 1 | 0 |
Wessels, Johannes Hendrik | Eindhoven, NL | 11 | 167 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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