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CIE 238:2020 Characterization of AC-Driven LEDs for SSL Applicationsstandard by Commission Internationale de L'Eclairage, 03/01/2020 |
| Format | Language | Price | Avaliablity |
|---|---|---|---|
| Secure PDF | English | € 84.00 EUR | Immediate Download |
| Printed Edition | English | € 84.00 EUR | Ships in 1-2 business days |
| Printed Edition + PDF | English | € 106.60 EUR | Immediate Download |
上列價格為CIE國際定價，向CIE-Taiwan訂購可享折扣優惠，CIE-Taiwan會員更享有會員優惠價，歡迎來電03-5732376或e-mail : cie_taiwan@itri.org.tw 洽詢。
Full Description
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.
This Technical Report 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.
The publication is written in English, with a short summary in French and German. It consists of 25 pages with 15 figures and is readily available from the CIE Webshop or from the National Committees of the CIE.
Product Details
Published:03/01/2020
ISBN(s):9783902842640
Number of Pages:25
File Size:1 file , 2.2MB