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NNTP-Posting-Date: Wed, 25 Dec 2002 11:33:59 -0600
From: "James Jackson"
Subject: Re: So how DO you find the burned out bulb?
Date: Wed, 25 Dec 2002 11:33:57 -0600
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I know I am replying a tad late to this thread, but I just now saw this and
thought that I would mention a little gizmo that I saw in my bosses office.
It was some sort of gun zapper that can be used on those mini-lights.
You plug the plug into the zapper - press the button, and it zaps the
You then plug the string into the wall, and the burned out bulb is not lit -
and all of the others are.
It works on a principle, that is 'built-in' to the little bulbs.
Each bulb has a shorting wire at their base that is supposed to allow the
rest of the string to light - if one (or more) bulbs burn out.
They usually don't work, however, and this is why the entire string goes
The zapper - works by producing a high-voltage pulse across the string - and
this 'welds' the little wire - on the burned-out bulb.
When you plug it into the wall... viola!
At least, I _think_ that's how it works.
My boss says it actually works.
It is powered by 3 little batteries... not sure of the part number, but they
are those button cell type batteries.
Of course - I may be wrong on all of this.
"Bill Brown" wrote in message
> I have been following the "Greenlee Voltage Stick" posts. I bought a $5
> Radio Shack Voltage detector and had similar problems figuring out which
> bulb is burned out in a series xmas light string..
> So the question is How do you find the burned out bulb?? If I had my magic
> wand I would create a pen sized stick with a hole in the bottom that you
> slip over the suspect bulb (while it still plugged into a powered string).
> If it buzzed (or didn't buzz) then you pop the bulb out with the attached
> grippers (Kind of like a screw holder, except sharper). It should be easy
> because you have a 120 VAC differential across the burned out bulb, but
> essentially nothing across a good bulb.
> Hmmm... maybe I should also post this to sci.electronics.design and see if
> any of the whiz bang designers over there have any good ideas. Hey guys
> over there, build a million, sell a million, make a million, $$ that is!
> See the original series of posts in sci.engr.lighting, under the thread
> "Greelee Voltage Stick".
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