Re: High Pressure Sodium Lamp Failure Characteristics

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Article #22559

#22559

From: chris
Date: Wed, 05 Feb 2003 13:18

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ewgeneral@yahoo.com (Dale) wrote in message news:<65050f09.0301282112.294b0685@posting.google.com>...
> Hi everyone out there.
> 
> Im looking at detecting failure of HPS street lamps where say you have
> up to 20 lamps on a particular circuit. Im only interested in knowing
> that one or more lamps are in failure state (i.e. from the moment they
> start to go through their on-off cycle)
> 
> (If anyone has got ideas on when a particular lamp has failed, via a
> single feeder circuit, of course I would be very interested, even
> maybe have a job for you!!! ;)
> 
> Failing a method for above, even a pointer or two to any links that
> may characterise the failure mode i.e. current/voltage characteristics
> of such would be a start.
> 
> Regards,
> 
> Dale

Hi, just give the residents a phone number to ring when the lamp
fails, just costs the price of a stamp.

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From: chrishelpfl@aol.com (chris)
Newsgroups: sci.electronics,sci.electronics.design,aus.electronics,sci.electronics.basics,sci.electronics.misc
Subject: Re: High Pressure Sodium Lamp Failure Characteristics
Date: 5 Feb 2003 05:18:25 -0800
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