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⢠Related Questions
In which area are most led light manufacturers in china?Not sure about the most but the best LED light manufacturers are located in Shenzen. The city is also home of LED distributors that supply LED lights and tubes across the world.I have studied Chinas LED market and am also personally acquainted with a manufacturer that is doing amazing work in R&D. The LED brand is known as SeniorLED and is also a registered brand in the USA and Canada.Founded in 2008, the company has managed to rise above the competition by evolving unique products for the LED market and focusing on building personal relationships with clients.Im following the brand on FB and it recently shared that it sends handwritten letters to all its LED customers. I dont know any other LED company that does that. So, I highly recommend discussing your LED requirement with this China based LED manufacturer and supplier if you are looking for one. Heres the email,
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Weird LED light bulb issue
The sockets are wired in series. For all I know, they always have been. You can get away with it with incandescents, at a bit over 1/4 the light from each bulb, so a 150 looks like a 40. With one incandescent and one LED, the LED limits current to about 130ma, which is not enough for a 150W incandescent to get up to power. As such, the incandescent doesn't see much current, and so can't drop much voltage. Therefore the LED sees near full voltage, and is able to function properly. If you want to test the "series" theory, try installing a 150W incandescent in one socket, and a 25W incandescent in the other. If the 25 is much brighter than the 150, that confirms it. Series is not a proper way to wire lights. The person who wired it doesn't know what they're doing. Have someone competent fix this and check all their other work.
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What are some applications of large cardinals?
Some objects whose cardinal is at least $2^c,$ where $c$ is the cardinal of the reals : (1). The set of all real functions. (2). The set of all filters on an infinite set. (3). The dual space $l_infty^*$ of the Banach space $l_infty.
$ (4). The maximal compactifications of $N$,of $Q$,and of $R$. (5). The free group on any set $S$ such that $|S|>c.$One result that comes to mind is that if $X$ is a separable Tychonoff space and $X$ has a closed discrete subspace $Y$ with $|Y|geq c$ then $X$ is not a normal space. This relies on the facts that the power set of $Y$ has cardinal at least $2^c$ and that the set of continuous $g:Xto R$ has cardinal at most $c$, and that $c