Don't need 400 Hz. You can use a light dimmer from a hardware store, for the EL panel at 60hz, add a resistor in series to keep things safe(limits current not voltage so much).
Driver circuit for small EL backlight
Aug 11, 2005
5 Replies
Hi
I have some 16x2 LCD panels, with EL backlight. I think they need something like 100 V, 400 Hz, at 1 - 2 mA
Has anyone got a circuit solution? I don't want to buy special ICs.
Tom
for
safe(limits
You can take apart an old camara flash unit and use the HV voltage from it. may need a resistor in series there too, dont need to trigger it. They are battery powered.
>
Not very useful in a battery operated device :(
You need an inverter, which you can buy or do by yourself (at that power level there is no problem). Basically, an oscillator plus a transformer. Maybe you knew this. I don't know.
formatting link
a few apps here
martin
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