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#21 |
Badcaps Veteran
Join Date: Jan 2007
City & State: New Jersey, USA
Posts: 2,283
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![]() To my knowledge the only Gallium Arsenide semis I have in my house are in my two Electroline dropamp cable amplifiers.
I have about 8 splits and passive splitters weren't cutting it ![]() The Arsenide did raise an eyebrow when I read it in the specs. They claim it reduces the noise introduced during amplification when compared with silicon semis.
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Elements of the past and the future combining to make something not quite as good as either. Last edited by Krankshaft; 02-23-2009 at 08:53 AM.. |
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#22 |
Banned
Join Date: Dec 2011
City & State: Albany, Western Australia
Line Voltage: 230VAC 50Hz
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![]() Sorry for bumping.
![]() What they really need to do is to ban planned obsolescence. If things didn't break then having lead in them wouldn't be much of a problem... ![]() |
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#23 |
Comrade Glimmer
Join Date: Aug 2007
City & State: tehas
My Country: US
Line Voltage: 120VAC 60Hz
I'm a: Professional Tech
Posts: 4,941
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![]() no, planned obsolence is a GOOD thing. it just needs to be changed to be extended from what most companies have it for. non ROHS would just stop the bga problems, but there would still be bad caps, bad mosfets, and other bad parts, to which having lead in your solder would not make much difference
but ROHS is stupid cause the amount of solder in a whole board is so small. Murcury from ccfls is more of an enviormental problem. But, all the pollution from factories in china is probably the worst enviormental problem, but as long as the products they import dont' have lead, the US looks the other way as long as what WE get dosen't contain lead, but the factories producing them are sweatshops, that pollute the globe at large am I on a soapbox? hmm, I guess I somehow ended up on one and didn't even realize it |
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#24 | |||
Banned
Join Date: Dec 2011
City & State: Albany, Western Australia
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![]() ![]() Quote:
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Also, metallic mercury ≠ organic mercury (I hope you knew already) Quote:
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#25 |
Comrade Glimmer
Join Date: Aug 2007
City & State: tehas
My Country: US
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#26 |
Banned
Join Date: Dec 2011
City & State: Albany, Western Australia
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#27 |
Badcaps Veteran
Join Date: Dec 2009
City & State: Prague, 50°4'52.22"N, 14°23'30.45"E
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![]() I've run into some interesting material, see the attachement…
Notice page 11, I think it says pretty much everything.
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Less jewellery, more gold into electrotech industry! ![]() ![]() Exclusive caps, meters and more! Hardware Insights - power supply reviews and more!
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#28 |
Banned
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City & State: Albany, Western Australia
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#29 |
EVs Rule
Join Date: Apr 2011
City & State: Leeds
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![]() No, I support some environmentalist policies myself, such as reducing the amount of CO2 we put into the atmosphere.
The key is not to take it to the enviro-mentalist too far, and lead-free solder is an example of that. But this is politicians looking good, and it's very unlikely to be reversed, even though it would likely lead to greater reliability. Maybe it'll take some large scandal like every third Xbox 360 failing after 13 months... oh, wait.
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Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead! Free service manuals: http://www.toms-service-manuals.com/ -- 72 LED/LCD TVs, 5 monitors, 28 plasma TVs, and 2 AVR 6.1 amplifiers fixed! -- I repair Pioneer 9G Plasma Main Boards & KRP-M01 Media Receivers (PM me for info) 2 Pioneer KURO 9G, 12 Panasonic LCD/Plasma, 1 Sony LCD, 1 NEC Plasma, 2 Yamaha HTS, 5 Sharp LCDs, 5 Toshiba LCDs, 7 Philips Plasma/LCD, 1 Hitachi Plasma, 11 LG LCD/Plasma, 18 Samsung LED/LCD/Plasma, 1 Thomson Plasma, 1 Atec LCD, 1 Hanspree LCD, 1 Xerox LCD, 1 Harwa LCD, 2 Proview LCD, 2 Hyundai LCD, 1 "Onn" LCD, 1 Grundig LCD, 1 Dell LCD, 1 iiyama LCD, 1 Acer LED, 1 Logik LCD, 1 Baird (China) LCD, 6 Bush LCDs, 22 Vestel LCDs (Best->Worst) |
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#30 | |
Badcaps Veteran
Join Date: Jul 2004
City & State: North Springfield, Vermont
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![]() Quote:
Since 2011, with most installed during 2012. I'm gonna miss metal halide, lol.
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#31 | |
Black Sheep
Join Date: Nov 2008
City & State: Madison, IN
My Country: USA
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![]() Quote:
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#32 |
Banned
Join Date: Dec 2011
City & State: Albany, Western Australia
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![]() I think I may have the answer as to why they put lead on the RoHS list without thinking it through.
Stress. It doesn't really need to be said again that stress is the #1 cause of mistakes. Ironically (but unfortunately too true), people often stress about mistakes. ![]() I honestly think lead has earned too much of a reputation for being toxic, causing people to forget about those other toxic substances. That only two of the lead-free solders compared in the PDF (Sn99.3Cu0.7, which isn't especially reliable even compared to other lead-free solders, and Sn89Zn8Bi3 by a small margin) had lower human toxicity potential than Sn63Pb37...and every solder with silver was many times more toxic...if that's not an epic fail, I don't know what is. Some people just don't get it. ![]() The analogy some people use by comparing it with petrol is, of course, completely ridiculous, as lead in solder stays in place for the life of the equipment, unlike tetraeythllead which is continually released straight into the atmosphere. Unfortunately, popular opinion is what makes the votes, no matter how ill-considered it may be. ![]() |
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#33 |
Banned
Join Date: Dec 2011
City & State: Albany, Western Australia
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![]() This is what I got when I made pixel measurements of the human toxicity potential graph (from the study document itself):
Between each multiple of 10 on the scale is 28 pixels. The bar for Sn63Pb37 goes only 4 pixels up. The bar for Sn95.5Ag3.8Cu0.7 goes 229 pixels up. ![]() Which calculates to a kg DCB equivalent of: Sn63Pb37: 1.42857... Sn95.5Ag3.8Cu0.7: 81.7857142857... Seriously, WTF environmentalists??? ![]() |
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#34 |
Banned
Join Date: Dec 2011
City & State: Albany, Western Australia
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![]() Keep in mind also how heavily lead was used before they realised its toxicity. Silver being a precious metal, it's understandable why it doesn't get as much bad press.
I feel that many things get this type of treatment where people overhype the negative aspects without fully understanding the differences. Some of these include air conditioning, fan heaters, and the Pentium 4. All of those fare poorly in generalised comparisons with the alternatives, but if assessed on their own merits, there's nothing truly wrong with them. |
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#35 |
Banned
Join Date: Dec 2011
City & State: Albany, Western Australia
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![]() It would probably be best if people stopped thinking of "toxic" and "non-toxic" substances. Anything can have ill effects with bad enough overexposure. Yes, even oxygen, green freaks.
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