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Old 29th January 2008, 05:55 PM   #21
Bobken is offline Bobken  United Kingdom
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Quote:
Originally posted by SY


This explains a lot.
Hi,

I just knew that it was risky posting amongst such astute members!

regards,

Edit.

I forgot to mention that probably some 50% of my teeth are an amalgam of mercury and silver, too!
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Old 29th January 2008, 06:55 PM   #22
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I can live with a CFL over my work bench. When it's too noisy, I just turn it off and let the warm glow of my energy hog tube scope light the room. What I can't live with is the possibility of burning down the house because of CFLs. None of my ceiling fixtures are ventilated, something I understand will cause CFLs to fail. I don't use them there, nor will I leave one on unattended when we leave the house. Nothing guarantees they will fail in a benign manner.

If you want to see something illuminating about energy, read Don Lancaster's #71 pub on energy at his Guru's Lair site. Everything the politicians "know", is wrong.
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Old 29th January 2008, 07:03 PM   #23
Eva is offline Eva  Spain
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Quote:
Originally posted by SY


This explains a lot.
Indeed!!

It's a pity that you are only getting the low quality pale white CFL stuff in the US. The warm white ones are quite different.
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Old 29th January 2008, 07:26 PM   #24
Bobken is offline Bobken  United Kingdom
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Quote:
Originally posted by Eva


Indeed!!

With sincere apologies to the thread-starter for this short off-topic excursion.

What a surprise, and does such a comment or your 'echo' add to this thread in any useful manner, or could it just be antagonistic?

Actually, I am surprised that none of your clever pals has told you that there should be a "D" at the end of the word "use" which you show in your signature. I know that you are not a native English speaker, which is why I have not mentioned it before out of politeness, but it should read "used" to make any sense, and I would like to help you with impressing other Forum members.

Regards,
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Old 29th January 2008, 10:47 PM   #25
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Why don't we ban copper too? It's poisonous! Oh, wait. All metals are poisonous in some way. Ban all metals!

I think it is unjustified to sacrifice the reliability of electronics like this, the electronics industry uses something like only 1% of all lead that is used. The alternatives seems to have huge problems. You'd have to eat the leaded solder or something equally insane to get poisoned.


Eva: I've noticed ringing from my desktop lamp which is a conventional ballast fluorescent. I get blips on the scope without even attaching the probe lead to the scope! Yes, the lamp is noname cheap junk.
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Old 30th January 2008, 07:56 AM   #26
Eva is offline Eva  Spain
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Quote:
Originally posted by megajocke

Eva: I've noticed ringing from my desktop lamp which is a conventional ballast fluorescent. I get blips on the scope without even attaching the probe lead to the scope! Yes, the lamp is noname cheap junk.
The voltage across the lamp suffers an abrupt polarity change with ringing everytime the ballast current crosses through zero. Starters include a capacitor to reduce dV/dt but it actually becomes quite ineffective and trades a lower ringing frequency for stronger ringing. You may wish to check if this fluorescent system has a power factor correction capacitor fitted, as it could improve EMI by confining some of the RF in the lamp-ballast loop.

Ironically, a good high-frequency switching mode ballast may produce less EMI (plus the usual advantages: increased light output, longer lamp life, fixed starting time, less power wasted as heat, etc...)
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Old 30th January 2008, 10:43 AM   #27
FrankWW is offline FrankWW  Canada
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So who among us will be first to light their home with these?

http://www.ledsmagazine.com/Architecture

http://www.ledsmagazine.com/news/4/12/19
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Old 30th January 2008, 12:42 PM   #28
poynton is offline poynton  United Kingdom
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Quote:
Originally posted by FrankWW
So who among us will be first to light their home with these?

http://www.ledsmagazine.com/Architecture

http://www.ledsmagazine.com/news/4/12/19
Don't they contain poisons like arsenic and gallium?

Ban them!!
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Old 30th January 2008, 12:44 PM   #29
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Quote:
Originally posted by poynton


Don't they contain poisons like arsenic and gallium?

Ban them!!

So does your FM tuner.
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Old 30th January 2008, 01:32 PM   #30
SY is offline SY  United States
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So does my ex-wife's cooking.
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