Re: TI-H: EL Backlight installed!

To: <ti-hardware@lists.ticalc.org>
Subject: Re: TI-H: EL Backlight installed!
From: "David Knaack" <dknaack@easen.net>
Date: Wed, 15 Apr 1998 12:47:35 -0500
Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: ti-hardware@lists.ticalc.org


From: Chris Cooper <cooper@fort-frances.LakeheadU.Ca>
>> The LCD requires AC to run, correct?  Where is the AC power for the
>> LCD produced?  (I don't have schematics).
>
>Is this correct? if so, wouldn't it be possible to do away with the
>Inverter?  Since the EL is supposedly able to handle anything up
120VAC?
>(240?)

Depends on the voltage that the LCD is running on, and the current
that
the inverter for the LCD can supply.  I have run these EL's up to
130VAC,
no problems, although at 60Hz they are brighter than I would want for
a
backlight.
The inverter would have to be able to supply an extra 6ma or so to run
the lamp.
I thought about this, but I don't know the specs for the LCD chip, so
I figured it would be better just to use the other inverter.

DK

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