CIE 238:2020

CIE 238:2020

Characterization of AC-Driven LEDs for SSL Applications

standard by Commission Internationale de L'Eclairage, 03/01/2020

FormatLanguagePriceAvaliablity
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03-5743875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.

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 , 2.2MB