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Subject: Re: My CDS cells are shorting out! (part two)
Date: Thu, 21 Nov 2002 23:00:11 GMT
NNTP-Posting-Date: Thu, 21 Nov 2002 18:00:11 EST
Organization: Road Runner
> Hello to you all! It is to my despair that i have
> to post again to report that i'm still havin problems
> with cds cells. At lot more details in pics at the
> link below but here's the short story. It's a circuit i
> did in 1994 to switch on the exterior lighting in our
> backyard at night. (Some of you may remember my original
> posting and the web page i've created to show what
> happened to my cells.) Everything went fine 'till 1998
> when i found that the CDS cell (wich is outside,of course)
> was shorted. I'm on the net since summer 2000 so since
> then a few ones worked with me on newsgroups to find a
> solution. Changed 3 times the cds cell since then, with
> improvements over time but the problem isn't solved.
> We discussed three major point that would have to be checked:
> 1- humidity
> 2- sunlight that focus on the photocell during the day and
> slowly "burning" it.
> 3- Damaging overvoltages could be induced in the cable and
> then zapping slowly,with time,my photocell since the cable
> for it is hidden for about 25' inside pvc electrical conduit for
> our 120/240Volts garage's power line and exterior lighting.
> Point #2 and 3 are no longer viable as procedure as been
> taken in late 2000 to solve that. And after seeing the pics of the
> shorted cells in the web page, many ones argued that since
> the beggining the problem has always originated from humidity.
> In may 2002 when i had(again) to replace a defective cell, i took
> some measures against humidity but i think it was the wrong
> measures, so here i am again! Please take the time to
> see the details at the link below. Thanks very much in advance
> for any new comments/suggestions!
> Alain (alias:Kilowatt) Montreal Quebec
> P.S: Excuse me for some errors or omissions,since
> I'm a «pure» French Canadian :-)
> If replying also by e-mail,remove"no spam"
> (with the quotes) from my adress...thanks!
> Come to visit me @: http://kilowatt.camarades.com
Change to an infrared sensor and you'll be all set.
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