Newbie: tips on how to start?
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From: Jasen Betts on 18 Jul 2010 06:09 On 2010-07-17, Michael A. Terrell <mike.terrell(a)earthlink.net> wrote: > > Jasen Betts wrote: >> >> On 2010-07-14, Baron <baron.nospam(a)linuxmaniac.nospam.net> wrote: >> >> >> How often do people drop dead from actual electrocutions in places >> >> that use 240, just doing plain tasks like you might at home or >> >> outside? >> > >> > People do die from electrocution on 240 volt AC mains. More often than >> > not the reflex action causes you to pull away. I agree with your >> > comment that "the danger is almost always from what you end up hitting >> > or falling off (like a ladder) /into than from the shock itself." >> > DC is far more likely to kill you, simply because the muscle contracts >> > and makes it impossible to let go. >> >> AC can do that too, My dad had trouble putting a skilsaw down after >> cutting the lead. luckily he was able to out-distance the extension >> lead. Next time he used it with an isolating transformer. > > It would be simpler to make sure you can't cut the cord with the saw. This is a handheld critular saw. a cord short enough to be intrinsically safe isn't long enough to be useful. But, yeah, definately more care would have helped. --- news://freenews.netfront.net/ - complaints: news(a)netfront.net ---
From: krw on 18 Jul 2010 11:08 On Sun, 18 Jul 2010 01:48:41 -0400, "Michael A. Terrell" <mike.terrell(a)earthlink.net> wrote: > >"krw(a)att.bizzzzzzzzzzzz" wrote: >> >> On Fri, 16 Jul 2010 20:28:04 -0400, "Michael A. Terrell" >> <mike.terrell(a)earthlink.net> wrote: >> >> > >> >Jasen Betts wrote: >> >> >> >> On 2010-07-14, Baron <baron.nospam(a)linuxmaniac.nospam.net> wrote: >> >> >> >> >> How often do people drop dead from actual electrocutions in places >> >> >> that use 240, just doing plain tasks like you might at home or >> >> >> outside? >> >> > >> >> > People do die from electrocution on 240 volt AC mains. More often than >> >> > not the reflex action causes you to pull away. I agree with your >> >> > comment that "the danger is almost always from what you end up hitting >> >> > or falling off (like a ladder) /into than from the shock itself." >> >> > DC is far more likely to kill you, simply because the muscle contracts >> >> > and makes it impossible to let go. >> >> >> >> AC can do that too, My dad had trouble putting a skilsaw down after >> >> cutting the lead. luckily he was able to out-distance the extension >> >> lead. Next time he used it with an isolating transformer. >> > >> > >> > It would be simpler to make sure you can't cut the cord with the saw. >> >> Batteries? ;-) > > > I've never seen a battery operated saw I would buy. :( I have a 9.6V 3-3/8" Makita circular saw that worked great on cedar siding. I could even use it while on the ladder. I resided my house in VT with it. It paid for itself in that one job but I haven't found much other use for it. http://www.makitapowertoolsonline.com/Cordless-Circular-Saws/Makita-5090D-Cordless-Circular-Saw.html A couple of years ago I bought an 18V 6-1/2" Dewalt circular saw. It's *very* useful. I've used it to cut down several sheets of 3/4" ply. http://www.dewalt.com/tools/cordless-saws-circular-saws-dc390k.aspx
From: krw on 18 Jul 2010 11:11 On Sun, 18 Jul 2010 01:51:10 -0400, "Michael A. Terrell" <mike.terrell(a)earthlink.net> wrote: > >Rui Maciel wrote: >> >> Michael A. Terrell wrote: >> >> > This isn't a forum, it's a newsgroup. >> >> In your opinion what's the difference? > > > Usenet is hosted on multiple servers around the world. A 'Forum' is >hosted on a single machine, or a single, small server farm. Care to give a citation for that definition? A forum is simply a (place for) public discussion.
From: John Fields on 18 Jul 2010 14:06 On Wed, 14 Jul 2010 15:12:38 +0100, Rui Maciel <rui.maciel(a)gmail.com> wrote: >John Fields wrote: > >> On Mon, 12 Jul 2010 14:47:45 +0100, Rui Maciel <rui.maciel(a)gmail.com> >> wrote: >> >>>I'm looking into picking up electronics as a hobby. What advice can you >>>spare? >> >> --- >> stay away from sci.electronics.design. ;) > >Why is that? --- Lots of grouchy old men flaming each other; hardly any electronics. This is a pretty good group for newbies, though.
From: Nobody on 18 Jul 2010 16:08
On Fri, 16 Jul 2010 20:30:15 -0400, Michael A. Terrell wrote: > This isn't a forum, it's a newsgroup. The two aren't mutually exclusive; in fact, the latter is a subset of the former. The word "forum" has been around far longer than the internet, or computers, or even electricity. It refers to any "place" which exists for discussion. On the internet, that includes newsgroups, mailing lists, and IRC channels, as well as Web-based fora (or "forums" for people who don't believe in etymology). |