Pajarico Posted January 20, 2007 Report Share Posted January 20, 2007 Hi, I've savaged an old mobile phone (an LG, about 5-7 years old, I'm not sure really). There's a plastic sheet of yellow-greenish color behind the LCD which is for illuminating the LED Quote Link to comment Share on other sites More sharing options...
gsmaster Posted January 21, 2007 Report Share Posted January 21, 2007 Thats "EL foil Backlight"These usually need a high voltage inverter to work Quote Link to comment Share on other sites More sharing options...
Pajarico Posted January 21, 2007 Author Report Share Posted January 21, 2007 Thanks. Could you point me to a circuit that you know is working? Most of the high voltage inverters I found use some transistors and a transformer (I doubt there was a transformer in there).EDIT: Now I have the name I'm doing a bit of research. Technicaly an EL panel is a capacitor which if has to be feed with a alternate sginal would make it a unpolarized capacitor. But wikipedia doesn't talk about inverting the DC and my panel is polarized.... The only thing that's clear is that it requires high voltage.EDIT 2: Nevermind. It needs an inverter as you pointed out. I've found a manufacturer page with information:http://www.seiko-precision.com.hk/html/el-catalogue.htmlHowever I want to know how can I drive the panel without a transformer.... (cause there wan't none) Quote Link to comment Share on other sites More sharing options...
login
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.