Sorry, forgot to mention earlier, but there is a line of IC's from Supertex=
=20
that do just what you want. They are available at mouser and I am linking t=
o=20
one of them.

http://www.mouser.com/index.cfm?handler=3Ddisplayproduct&lstdispproductid=
=3D401660&e_categoryid=3D266&e_pcodeid=3D68904

Hope that helps.

-Tarun.

On 5/18/05, Olin Lathrop <olin_piclist@embedinc.com> wrote:
>=20
> 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?
>=20
> Not unless you have found a way to redifine the laws of physics.
>=20
> > not, what might it be?
>=20
> 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=20
> 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.
>=20
> *****************************************************************
> Embed Inc, embedded system specialists in Littleton Massachusetts
> (978) 742-9014, http://www.embedinc.com
> --
> http://www.piclist.com PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>=20



--=20
Tarun Grover
Computer Engineering & Management V
McMaster University, Hamilton, ON, Canada
Chair, McMaster IEEE Student Branch Computer Chapter
grovert@mcmaster.ca - tarun.grover@gmail.com
tarun_grover@ieee.org - deathstorm@rediffmail.com
905-518-2743
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist