Title:
A PROTECTIVE AND MEASURE DEVICE FOR MULTIPLE COLD CATHODE FLOURESCENT LAMPS
Document Type and Number:
WIPO Patent Application WO2005006377
Kind Code:
A3
Abstract:
The preferred embodiment pertains to an electronic ballast functioning as a high-frequency power source for driving multiple cold cathcode flourescent lamps (CCFLs), primarily by parallel connecting one end of each of a plurality of CCFL to a measure element to measure the LED power source provided by the measure element's photocoupler, and concurrently serially connect the photocoupler's collect-emitter terminal, followed by employing comparators to assess the open circuit, over current, and under current among multiple cold cathcode flourescent lamps. Said electronic ballast serves to protect CCFLs,and thus contribute to the quality and protection required for large LCD monitors.
Inventors:
LU CHAO-CHENG (CN)
Application Number:
PCT/US2004/021657
Publication Date:
October 13, 2005
Filing Date:
July 07, 2004
Export Citation:
Assignee:
IDEA INC (US)
LU CHAO-CHENG (CN)
LU CHAO-CHENG (CN)
International Classes:
G05F1/00; H01R13/648; H05B41/285; H01J; (IPC1-7): G05F1/00
Foreign References:
| US6531835B2 | 2003-03-11 |
Other References:
See also references of EP 1719034A4
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