Home LED Flickers

ote:

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ch shielding so anything can cause them to flicker.

t RFI.

Nevermind my comment on RF. I had my thought train crossing.

I do think these are made cheaply and they would have to be in order to tur n a profit. As far as RF, nah that isn't going to cause flicker. The bulb i tself is DC and if there was any RF it would simply be super imposed onto a DC bias which the amplitude from any RFI would be so insignificant and wou ldn't matter because well it's a diode. The driver shouldn't respond to RFI because it's an AC/DC converter and the DC is probably being switched whic h alone would cause RF. Just the AC is creating a field. I really couldn't say exactly what is causing the flicker because I am not present to check t he entire circuit. As far as what can cause it. Bad wiring, bad can, bad bu lb, corrosion, bulb not installed all the way. Things of that nature. Could be a bad solder joint. I have a Saab which has a bulb out detector. These are notorious for bad solder joints and the symptoms are a headlamp bulb th at can flicker or come on and out and you know it all responds to vibration and of course temperature for obvious reasons.

Bring back that cheaply made stuff. Yeah they aren't exactly made to last f orever because you need to consider the planned obsolesce part. Yes they ha ve been known to last 10+ years but not all of them do and it is because of chance or was it designed to? One can pickup these 60W equivalent 2 packs in HD for 5 bucks when they are on clearance. The retailer still makes a pr ofit the distributor makes a profit the designer, etc. Everyone still gets their money. Maybe not the amount they had in mind by they never give away anything.

My worthless 2 cents

Reply to
frankcovending
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much shielding so anything can cause them to flicker.

nst RFI.

urn a profit. As far as RF, nah that isn't going to cause flicker. The bulb itself is DC and if there was any RF it would simply be super imposed onto a DC bias which the amplitude from any RFI would be so insignificant and w ouldn't matter because well it's a diode. The driver shouldn't respond to R FI because it's an AC/DC converter and the DC is probably being switched wh ich alone would cause RF. Just the AC is creating a field.

The reason the driver doesn't cause flicker in response to RFI is it consis ts of

  1. rectifier & reservoir, which couldn't care less what comes its way
  2. oscillator, which is too busy slamming into one rail after the other for rfi to make much difference.

If there were low level analogue signals getting amplified it might be a di fferent story.

t present to check the entire circuit.

the OP never gave us enough info to narrow it down at all.

NT

Reply to
tabbypurr

:

ime.

after

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h much shielding so anything can cause them to flicker.

ainst RFI.

turn a profit. As far as RF, nah that isn't going to cause flicker. The bu lb itself is DC and if there was any RF it would simply be super imposed on to a DC bias which the amplitude from any RFI would be so insignificant and wouldn't matter because well it's a diode. The driver shouldn't respond to RFI because it's an AC/DC converter and the DC is probably being switched which alone would cause RF. Just the AC is creating a field.

ists of

or rfi to make much difference.

different story.

not present to check the entire circuit.

the OP never gave us enough info to narrow it down at all.

is basically a reiterating of what i said. i'm not present in the persons h ome.

RF isn't a problem anyways because the only signal with great enough amplit ude to cause problems are at such low frequencies. there simply isn't enoug h energy. shorter wavelength = higher frequency = higher energy. i can tell you though if you hooked up an oscilloscope you probably could pickup signalling from something around, but again it's all being fed to a diode o ne way or another.

Reply to
frankcovending

:

ime.

after

t I

er

h much shielding so anything can cause them to flicker.

ainst RFI.

turn a profit. As far as RF, nah that isn't going to cause flicker. The bu lb itself is DC and if there was any RF it would simply be super imposed on to a DC bias which the amplitude from any RFI would be so insignificant and wouldn't matter because well it's a diode. The driver shouldn't respond to RFI because it's an AC/DC converter and the DC is probably being switched which alone would cause RF. Just the AC is creating a field.

ists of

or rfi to make much difference.

different story.

not present to check the entire circuit.

RF aside the simple answer is it flickers because the person didn't install it correctly, the wiring is crap, or the lamp is a POS. they are made to b e replaced

Reply to
frankcovending

Or one of the other usual reasons.

NT

Reply to
tabbypurr

I already did replace it. No more flicker. I only posted this to learn what could cause flicker to occur....

Reply to
tubeguy

ote:

while not-quite-one-size-fits-all, the same emitter may provide light from between 3000K to 5000K. They are also pretty bullet-proof.

ED lights.

A broken bonding wire will cause a flicker as it heats, then opens. It cool s and comes back on. Not that you actually know anything about Semiconducto rs and how the dies connect to the outside world. Stick with your junk, tub e amplifiers and radios.

I have done autopsies on a handful of failed LED bulbs Every one so far has had the case vent on the Electrolytic capacitor, and spraying the electrol yte inside the plastic case. The bulbs are easy to open. A thin film of RTV holds the dome on the bas. Twist it and it breaks free. Once they are open , there are two solder pads from the bottom part. Unsolder them, and you ca n replace the electrolytic. I was more interested in converting some of the to 12Volts instead of repairing them. The internal construction was identi cal on the $1 Sunbeam bulbs as higher priced, better known brands.

Reply to
Michael Terrell

He is BT 2.0

Reply to
Michael Terrell

It took you almost 4 months to come up with this? Crawl back under your rock you miserable bitter old man.

--
"I am a river to my people." 
Jeff-1.0 
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Reply to
Fox's Mercantile

I haven't been on Usenet for over 15 months. The provider that I paid for is worthless, like much of what people post on these groups. I can read messages, but no longer post so I used Google Groups.

Take your own advice, Texas is full of rocks.

Reply to
Michael Terrell

Go f*ck yourself.

--
"I am a river to my people." 
Jeff-1.0 
 Click to see the full signature
Reply to
Fox's Mercantile

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