[sdiy] what are these?

[Ken Stone]

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

>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
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