Wallace Yang wrote:
> I would like to use an electroluminescent (EL) LCD
> because it boasts a very low current consumption (~2mA
> I'm not sure if this is AC).  However, its lighting
> power source requires AC100Vrms, 400Hz.  The
> application that I'm working on can only use a 9V
> battery and a 5V regulator.
>
> 2) The current probably will not be DC2mA will it?

Not unless you have found a way to redifine the laws of physics.

> not, what might it be?

You can work this out yourself.  Figure the power going into the EL
backlight.  Now figure current that must be drawn from 5V to get that power.
That's the theoretical minimum current it will take.  In practise the
conversion from 5V to 100VAC won't be 100% efficient, so more power will
need to be drawn from the 5V.


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