[sdiy] what are these?

[Roy J. Tellason]

On Saturday 23 October 2004 10:41 pm, you wrote:
> So cut the neon off, and replace it with a 5mm green LED. It will be easy
> enough for you to re-heatshrink them when done.
>
> Ken

It ain't worth the hassle.  I have plenty of regular optos on hand here...

> >Ok,  I opened one up,  since there only seemed to be 3 rather than 4 leads
> >coming out of it.  And what do I find?  Another layer of heatshrink,  this
> >one thin and yellow.  I can see what looks like the tip of a neon bulb
> >peeking out of one end of the shrink,  and this yellow stuff is apparently
> >transmissive enough that this time when I put the meter across the
> > photocell I get readings that drop down to close to 100 ohms as I get
> > closer to the lamp over my desk.
> >
> >Regular optos I can find a use for (and I have some,  and plans for them),
> >but not ones driven by a neon bulb.  Any of you guys have a use for these?
>
> _______________________________________________________________________
> Ken Stone   sasami at hotkey.net.au or sasami at cgs.synth.net
> Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
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