Electroluminescent LCD backlight


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  1. #4
    Join Date
    Jan 2005
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    Montreal, Quebec, Canada
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    (I PMed Lester to move this thread over to General Discussion, I'll post final schematics here once I know what I'm doing)

    I was trying to stay away from using a PIC for this exercise and finally learn to use the 555 and mosfets. The 555 is running just fine, I just realized that the pulses are not at 5V, so I have to put schmitt triggers to clean things up.

    I just got back from the local electronic store with 100uH canisters that look just like what NerdKits used. I have to solder leads to make it fit the breadboard first. I also took the opportunity to take 5 of every inductor size they had in stock, I like having a good selection when I don't know what I'm doing.

    Yeah, I knew about the high voltage thingy, that's why so few adventure this way. I think I'll cut the leads on the caps so they're bare minimum and put some electric tape to cover them, same over that 100K resistor and output leads. I put one multimeter on 600V AC across the leads so I'll know if I have something coming out through there.

    I'm kinda confused with the mosfet. I identified the gate, drain and source leads from the datasheet, but the arrows don't look anything like those on the Nerdkits schematic. I used the same mosfet, IRF730A.
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    Last edited by Demon; - 5th May 2011 at 00:11.

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