Zong, Y.
, Ohno, Y.
and , P.
(2008),
PRACTICAL METHOD FOR MEASUREMENT OF AC-DRIVEN HIGH-POWER LEDS, CIE Midterm Meeting and the Light and Lighting Conference, Budapest, -1, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=903044
(Accessed October 16, 2025)
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PRACTICAL METHOD FOR MEASUREMENT OF AC-DRIVEN HIGH-POWER LEDS
Published
Author(s)
, , Pei-ting Chou
Abstract
Alternating-current (AC) driven high-power LEDs are available and used in SSL products. AC LEDs operate directly from a mains supply and thus have advantages in simplifying product design, increasing product reliability, and extending product lifetime. Accurate measurement of AC high-power LEDs is required for quality control and product qualifications such as US Energy Stars. We have developed a simple, robust method for measurement of high-power LEDs at any specified junction temperature under a normal AC operating condition. In addition to optical quantities, the measurement of an AC LED also determines the thermal resistance between the LED junction and the heat sink.Proceedings Title
CIE Midterm Meeting and the Light and Lighting Conference
Conference Dates
May 27-29, 2009
Conference Location
Budapest
Pub Type
Conferences
Download Paper
Keywords
AC LED, High-Power LED, Junction temperature, Measurement method
Citation
Issues
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Created July 14, 2008, Updated February 19, 2017