Author Topic: Dayburning Night Lights  (Read 2429 times)
wattMaster
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Dayburning Night Lights « on: September 12, 2016, 09:51:02 AM » Author: wattMaster
I was wondering why you never see dayburning night lights, I think it is because of the very low UV in homes or where night lights are usually placed.
There's also the issue of quality, which seems to matter more with night lights than anything else.
I'm talking about this style of night light, with a CdS photoresistor and incandescent bulb.
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Ash
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Re: Dayburning Night Lights « Reply #1 on: September 12, 2016, 01:11:35 PM » Author: Ash
There is the wear of the components from UV and not less important water ingress, but on the other side plug in nightlights and road luminaire photocontrols are built to entirely different quality/durability standards...

I think the reason you dont see dayburning nightlghts is because it takes exactly 1 minute for the home owner to take the dayburner from the receptacle and throw it in the trash, which is not the case with a photocontrol up a street luminaire pole
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Re: Dayburning Night Lights « Reply #2 on: September 12, 2016, 01:55:13 PM » Author: wattMaster
I would think I would see more because people here generally think "Well, it's still working, so why get rid of it?"
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Re: Dayburning Night Lights « Reply #3 on: September 12, 2016, 02:31:50 PM » Author: Ash
What about "its dayburning and wasting energy" ? In reality the LED power use is lower than just the losses of the constant current driver in some of them (which is a capacitor in series with the line, the capacitor itself ideally would not draw power, but it have some losses and in a few there is actually a component resistor in series too)
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Re: Dayburning Night Lights « Reply #4 on: September 13, 2016, 10:56:20 PM » Author: wattMaster
What about "its dayburning and wasting energy" ? In reality the LED power use is lower than just the losses of the constant current driver in some of them (which is a capacitor in series with the line, the capacitor itself ideally would not draw power, but it have some losses and in a few there is actually a component resistor in series too)
Then they will say "Oh it's just a night light, they don't use much power."
But I think the most common situation is that the night light starts to dayburn and nobody notices it, so they don't replace the night light.
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