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Article #56Re: Best way to power array of LEDs?
From: Lizard Blizzard
Date: Sat, 14 Dec 2002 01:25
Date: Sat, 14 Dec 2002 01:25
47 lines
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3544 bytes
Frank Bemelman wrote: > "John Woodgate" <jmw@jmwa.demon.contraspam.yuk> schreef in bericht > news:ZRoDyBCO$j+9Ewv9@jmwa.demon.co.uk... > >>I read in sci.electronics.design that Spehro Pefhany >><speff@interlog.com> wrote (in <c52kvuc8sut17acevom3dimg06i7d1ffn0@4ax.c >>om>) about 'Best way to power array of LEDs?', on Fri, 13 Dec 2002: >> >>>They have a nasty habit of using nickel-plated PCBs as the stator part >>>of the switches in cheap DMMs. >> >>Yes. It doesn't wear too much, but it builds up a surface film that >>prevents conduction. Switch cleaner works for a while. > > > Giving them away works even better ;) > (confession: I have a few cheapo's too). The problem I have is that the meter must be left on for a long time to read the thermal drift. But a wiggle stick meter, which requires no power to indicate, will not be accurate enough, so I have to use a digital meter of some sort. But the digital meter eats up the battery if I leave it on, and one of the meters shuts itself down after awhile. I guess what I should do is put a battery eliminator on it. But I'm not sure if that is isolated enough. And it seems that I'm always one meter short of making all the measurements. > -- > Thanks, > Frank Bemelman > (remove 'x' & .invalid when sending email) -- ----------------(from OED Mini-Dictionary)----------------- PUNCTUATION - Apostrophe Incorrect uses: (i) the apostrophe must not be used with a plural where there is no possessive sense, as in ~tea's are served here~; (ii) there is no such word as ~her's, our's, their's, your's~. Confusions: it's = it is or it has (not 'belonging to it'); correct uses are ~it's here~ (= it is here); ~it's gone~ (= it has gone); but ~the dog wagged its tail~ (no apostrophe). ----------------(For the Apostrophe challenged)---------------- From a fully deputized officer of the Apostrophe Police!
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 112d1e,4ef4c9d4aea85e1f X-Google-Attributes: gid112d1e,public X-Google-Thread: 10d137,4ef4c9d4aea85e1f X-Google-Attributes: gid10d137,public X-Google-Thread: 1131b0,4ef4c9d4aea85e1f X-Google-Attributes: gid1131b0,public X-Google-Thread: 103407,4ef4c9d4aea85e1f X-Google-Attributes: gid103407,public X-Google-Thread: 1118be,4ef4c9d4aea85e1f X-Google-Attributes: gid1118be,public X-Google-ArrivalTime: 2002-12-13 17:27:11 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!newsfeed.stanford.edu!logbridge.uoregon.edu!tethys.csu.net!newshub.csu.net!not-for-mail From: Lizard Blizzard <NOSPAM@rsccd.org> Newsgroups: sci.electronics.components,sci.electronics.design,alt.engineering.electrical,aus.electronics,sci.electronics.repair Subject: Re: Best way to power array of LEDs? Date: Fri, 13 Dec 2002 17:25:13 -0800 Organization: CSUnet Lines: 48 Message-ID: <ate15d$1b2ft$1@hades.csu.net> References: <0001HW.B9C26E7400A7161B165FEAC0@news.covad.net> <at0a6l01j0s@drn.newsguy.com> <at0rth01cgq@drn.newsguy.com> <MPG.185df582bcee22e1989dde@news.inreach.net> <at592u$rs1$1@eskinews.eskimo.com> <atba8f$1aqgk$1@hades.csu.net> <G7Uk4SA$EZ+9Ewv3@jmwa.demon.co.uk> <c52kvuc8sut17acevom3dimg06i7d1ffn0@4ax.com> <ZRoDyBCO$j+9Ewv9@jmwa.demon.co.uk> <3dfa4d0a$0$173$1b62eedf@news.euronet.nl> NNTP-Posting-Host: 204.75.249.20 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.1) Gecko/20020826 X-Accept-Language: en-us, en