Method of operating a lamp with a power controller having current limited RMS regulated output
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Dec 9, 2008
Grant Date -
May 8, 2008
app pub date -
Oct 2, 2006
filing date -
Oct 2, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for converting a line voltage to an RMS load voltage in a lamp includes providing a control circuit which includes a switch and a microcontroller that operates the switch to establish an RMS load voltage for the lamp. The load voltage of the lamp is sensed and the sensed load voltage is compared in the microcontroller to a reference RMS voltage. Operation of the switch is adjusted in response to the comparison so that the RMS load voltage is substantially constant at the reference RMS voltage over a first operating range of the line voltage and so that the RMS load voltage decreases with decreasing line voltage at non-zero line voltages less than the first operating range.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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LEDVANCE LLC | 200 BALLARDVALE STREET WILMINGTON MA 01887 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Ballenger, Matthew B | Lexington, KY | 40 | 89 |
# of filed Patents : 40 Total Citations : 89 | |||
Eastwood, Brent J | Lexington, KY | 3 | 0 |
# of filed Patents : 3 Total Citations : 0 | |||
Kendrick, George B | Lexington, KY | 40 | 209 |
# of filed Patents : 40 Total Citations : 209 | |||
Weyhrauch, Ernest C | Richmond, KY | 37 | 88 |
# of filed Patents : 37 Total Citations : 88 |
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- H05B Class
- 0 % this patent is cited more than
- 17 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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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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Legal Events
Date | Code | Event | Description |
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Jun 10, 2019 | MAFP | MAINTENANCE FEE PAYMENT | free format text: PAYMENT OF MAINTENANCE FEE, 12TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2553); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY year of fee payment: 12 |
Jun 11, 2015 | FPAY | FEE PAYMENT | year of fee payment: 8 |
Jun 13, 2011 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Dec 11, 2007 | I | Issuance | |
Nov 21, 2007 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Aug 09, 2007 | P | Published | |
Feb 09, 2006 | F | Filing | |
Feb 09, 2006 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SHAN, XINXIN;REEL/FRAME:017556/0775 Owner name: LED SMART INC., CANADA Effective Date: Feb 09, 2006 |

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