Dear All, I am investigating an ITE product with a backlight-circuit (used to provide the background lighting for an LCD display located in SELV). However, manufacturer of product cannot get hold of the backlight circuit schematics. I intend to use Clause 2.3.5 of the UL1950/EN 60 950 standard. This allows the SELV to be connected to hazardous voltages (approx 1500 V) in the backlight circuit as long as the SELV limits are maintained even after single faults.
Missing the schematics, I wonder if if anyone can explain how a backlight circuit works and what components in such a circuit are candidates for shorting and/or open-circuiting? Thanks and Best Regards, PETER S. MERGUERIAN MANAGING DIRECTOR PRODUCT TESTING DIVISION I.T.L. (PRODUCT TESTING) LTD. HACHAROSHET 26, P.O.B. 211 OR YEHUDA 60251, ISRAEL TEL: 972-3-5339022 FAX: 972-3-5339019 E-MAIL: [email protected] Visit our Website: http://www.itl.co.il --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
