RE: TI-H: lots of ideas
[Prev][Next][Index][Thread]
RE: TI-H: lots of ideas
Sorry to rain on your parade, but that idea floated around the list a few months ago. I think there was a problem with powering it due to the AC and voltage. Anyway, I think that the LED method might work, it just needs proper grinding, reflective tape
And as for the brightness issue with red vs green LEDs, I could be dead wrong (and probably am), but the brightness and the wavelength have some sort of relation, so a 2000mcd green might not be necessary.
Christopher Kalos
raptorone@geocities.com
raptor_one@hotmail.com
Executive Director/Administrator
Virtual Technologies Developer's Group
----------
From: Greg Hill[SMTP:gregh@xmission.com]
Sent: Wednesday, October 01, 1997 11:08 PM
To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: lots of ideas
There is a product sold as a night light that has an electroluminescent
panel (EL or Indiglo) in it. It is about 5 mm (if I remember correctly)
smaller than the LCD screen in each direction. It is about 1.5mm thick.
The EL panel could be inserted behind the LCD panel, but it isn't very
bright when powered from 120 VAC. I suppose if you could get it up to
about 150 or 200 VAC it would be brighter, but will not last as long.
Supplying power to the panel is the biggest problem: how do would you go
about feeding it in there? Inverters exist which convert DC (like 5V) to
AC for the panel, but one big enough to supply power to the EL panel would
be rather large (and expensive.. about $15, I think).
Getting the LCD off isn't particularly difficult, it just takes a while. I
used a razor knife (sometimes known as a utility knife) to cut the
double-sided foam mounting tape that holds my LCD to its circuit board.
Just be careful not to hit the ribbons, that'd cause a really bad day.
--
Greg Hill
greg-hill@bigfoot.com
www.comports.com/link
- Warning
- Could not process part with given Content-Type:
application/ms-tnef