Digest for sci.electronics.repair@googlegroups.com - 5 updates in 1 topic

"pfjw@aol.com" <peterwieck33@gmail.com>: Sep 10 10:48AM -0700

One may purchase a commercial-grade 7,000 lumen LED Fixture complete with a 50,000 hour lamp for about US$60. Note that LEDs do not have 'wasted' lumens as they are all directed out, so 35-50 watts of LED is equivalent to 175 watts of HID light, even in a well-designed fixture.
 
A "smart" HID Ballast may be had for about US$50. Changing it out properly takes both knowledge and skill.
 
The typical HID lamp costs about US$8, and lasts about 10,000 hours.
 
Around here, power is about $0.14/KWH
 
So, in 50,000 hours, a 50-watt LED fixture will burn about 2,500 KWH, or US$350 in power. Making the investment $410 in total for that 50,000 hours.
 
That 175 watt lamp will burn 8,750 KWH and need to be replaced five (5) times.
 
So: $1,225 in power. $40 in lamps, $50 in a ballast. Total investment of $1,315.
 
Then, there is the issue with heat, modification of of a fixture outside of its design parameters, and so forth.
 
Hence the comment on Common Sense being an uncommon commodity.
 
What are you doing anyway? Jacklighting deer?
 
Peter Wieck
Melrose Park, PA
Ralph Mowery <rmowery28146@earthlink.net>: Sep 10 06:07PM -0400

In article <436d8df8-3e2d-434c-8600-767ea2d612cb@googlegroups.com>,
peterwieck33@gmail.com says...
 
> Hence the comment on Common Sense being an uncommon commodity.
 
> What are you doing anyway? Jacklighting deer?
 
He said bug catcher so he needed a light that put out a certain kind of
light.
 
The led will not do that (he said).
 
 
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Rheilly Phoull <rheilly@bigslong.com>: Sep 11 08:45AM +0800


> 180 VAC at 125 watts is no laughing matter. Common sense saves lives.
 
> Peter Wieck
> Melrose Park, PA
 
Less than an amp, ooohh-errr
"pfjw@aol.com" <peterwieck33@gmail.com>: Sep 11 03:54AM -0700

On Tuesday, September 10, 2019 at 6:07:52 PM UTC-4, Ralph Mowery wrote:
 
> He said bug catcher so he needed a light that put out a certain kind of
> light.
 
> The led will not do that (he said).
 
Yet more evidence of a lack of common sense. Light-based bug catchers used outdoors attract no/zero/none/zilch harmful insects, except by accident. And in some regions where over-used, they are playing merry hell with the local ecosystem.
 
https://www.sciencedaily.com/releases/1997/07/970730060806.htm
 
Peter Wieck
Melrose Park, PA
"pfjw@aol.com" <peterwieck33@gmail.com>: Sep 11 03:55AM -0700

On Tuesday, September 10, 2019 at 8:45:25 PM UTC-4, Rheilly Phoull wrote:
 
> > Peter Wieck
> > Melrose Park, PA
 
> Less than an amp, ooohh-errr
 
Dare you to put yourself in the path of an HID Lamp ballast!
 
Peter Wieck
Melrose Park, PA
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