RE: TI-H: Back to backlighting!

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RE: TI-H: Back to backlighting!

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It shouldn't be that hard to rig up a small audio transformer, and a =
small oscillator and step the voltige up to 120, if not a transformer, =
maybe a diode cascade?


----------
From: 	C.J. Oster[SMTP:cjo@pobox.com]
Sent: 	Sunday, November 24, 1996 9:32 PM
To: 	ti-hardware@lists.ticalc.org
Subject: 	Re: TI-H: Back to backlighting!


It all works the same way as indeglo.  You have to run A LOT of voltage
through it to make it light up.  The more voltage, the brighter it =
lights
up.  The amperage really doesn't matter, that's how it works in watches.
The 3v from the battery is steped up to a few hundred at a very small
amperage.


>I found one of those Lime-lights. The small compact green night-light =
for
>those that didn't see the post. Anyway, I dismantled it and what I =
found
>was better than I had hoped. The thing is made out of a little card =
with
>a negative and positive terminal. The card is thinner than a credit =
card
>and smaller than the TI-screen. Unfortunately, it plugs into the 120 =
volt
>socket. I was hoping that it didn't need so much voltage and that
>resistors stepped it down, but there was nothing in the casing except =
the
>"glow-card." Attaching the little thing to a nine-volt may have made it
>glow a little if I wasn't imagining things. This would be perfect to
>stick in the calc, but we need MORE POWER! If anyone has any ideas to =
get
>this thing to work in the calc on 6 volts, let's hear it! I don't know =
a
>lot about electronics so even the smallest thought would be welcome. =
This
>is for all of us, so let's hear what people have to say.
>
>Thanks
>
>.\\ark
>Markzshell@juno.com    <can't attach files to this address>
>Zarkon1000@aol.com      <checked much less frequently>






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=20








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