CIE 238:2020

CIE 238:2020

Click here to purchase
AC-driven LEDs (AC LEDs) operate on AC power and may be connected directly to a mains supply without the need of any electronics (e.g. LED drivers or control gears) for converting AC power to a constant direct current. Similar to DC-driven LEDs (DC LEDs), accurate measurements of AC LEDs are also difficult due to the high sensitivity of optical and electrical properties of LEDs to their thermal and operating conditions. In addition, forward voltage, current, and junction temperature of an AC LED change rapidly, which makes measurements even more difficult.

CIE 238:2020 provides guidance for optical measurements of AC LEDs, performed at testing laboratories with emphasis on reproducibility and small measurement uncertainties by accurately setting and controlling the junction temperature. The report includes measurement methods, instrumentation, and procedures. The measurement methods and procedures used for optical measurement of AC LEDs are based on a specified junction temperature using either single AC cycle operation or continuous AC operation.

Product Details

Published:
03/01/2020
ISBN(s):
9783902842640
Number of Pages:
25
File Size:
1 file , 2.2 MB

You may also like

CIE ISO 23539:2023

CIE ISO 23539:2023

Photometry - The CIE system of physical photometrystandard by Commission Internationale de L'Eclairage, 2023

CIE 251:2023

CIE 251:2023

LED Reference Spectrum for Photometer Calibrationstandard by Commission Internationale de L'Eclairage, 01/01/2023

CIE x049-P13

CIE x049-P13

IMPACT OF SAMPLING RATE ON FLICKER METRIC CALCULATIONSConference Proceeding by Commission Internationale de L'Eclairage, 10/01/2022

CIE x049-P08

CIE x049-P08

FIELD MEASUREMENT OF TLM QUANTITIES IN LIGHTING SCENARIOSConference Proceeding by Commission Internationale de L'Eclairage, 10/01/2022

Back to Top