Re: TI-H: EL Panel


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Re: TI-H: EL Panel




-----Original Message-----
From: David Knaack <dknaack@easen.net>
To: ti-hardware@lists.ticalc.org <ti-hardware@lists.ticalc.org>
Date: Thursday, February 26, 1998 2:46 PM
Subject: Re: TI-H: EL Panel


>
>>How many are you selling?
>
>I am keeping one for myself, so I can sell 6.
>
>>Could I get a discount for large quantities?
>
>I'm selling these at my cost, plus ~$1.50 (for shipping and my
>trouble).  If you want more that that, you'd be better off buying
>the prototype kit and cutting them yourself.  I am selling them
>because the prototype kit can produce 7, and I only need one.
>Selling them at cost defers the cost for all involved.


If I needed more in the future, would you be willing to make them?

>
>>  How do you seal them from condensation?
>
>I assume you mean the EL panels, not the calc.
>According to the manufacturer, the panels are manufactured
>in such a way that the phosphors used do not oxidize in the
>presence of moisture.  The only reason to seal these panels
>is to protect other electronics from the voltages present on the
>cut edges.

The EL panels I have are plastic-coated.

>>Do you check for  glass shard after cutting?
>
>I'm not sure I follow...  The EL panels are made of polyester
>film, phosphors, barium titanate, silver ink, and metal leads.
>I was planning on using a double layer of clear tape to bind
>the edges, and heat-shrink tubing over the inverter.

Someone from Lumitek told me that you have to inspect the edges under a
microscope to check for small shards.  If they are present, it can cause the
inverter not to work.

>>What color?
>
>I will order white, but three main colors are available, green,
>blue-green, and white.  Custom colors can be produced by
>the addition of color filters (I don't know if this option is
>available with the prototype kit, I would assume yes).
>
>>How do you attatch leads?
>
>The leads for the kit appear to be crimped male pins, which
>it says are solderable.

Are they on all the panels?

>>I am interested, if you can answer these simple questions.
>
>Kool, let me know, I'd like to order this in the near future.
>My cost will be $75 for 7 panels and one inverter, plus $15
>for each additional inverter.  My cost for each unit is then
>$23.58, I'll resell them for $25.
>
>I can isolate it for you (tape the panel and heat-shrink encapsulate
>the inverter, if present), or you can do it yourself.
>
>The inverters come in both 8 pin narrow SOIC and micro
>SOIC packages.  If you want, you can purchase your inverter
>from another source, and just get the panel from me.  In that
>case, it will only be $10.

Will the inverter fit in the calc?

>David Knaack
>
>