Newbie: tips on how to start?
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From: Cydrome Leader on 15 Jul 2010 11:46 Cydrome Leader <presence(a)mungepanix.com> wrote: > Sjouke Burry <burrynulnulfour(a)ppllaanneett.nnll> wrote: >> Cydrome Leader wrote: >>> JW <none(a)dev.null> wrote: >>>> On Mon, 12 Jul 2010 21:06:30 +0000 (UTC) Cydrome Leader >>>> <presence(a)MUNGEpanix.com> wrote in Message id: >>>> <i1g04m$aig$2(a)reader1.panix.com>: >>>> >>>>> you can grab a cheap am radio, remove the cover and even just poke around >>>>> at the parts while it's on. >>>> Battery powered of course, if poking with your fingers! >>> >>> haha, yes. >>> >>> So what does mains shock feel like in places with 240? >> >> It makes you see stars, and makes your muscles contract violently. >> And there might be a small burn mark. >> Having good quality plastic soles under your shoes makes single contact >> oke. Dont use leather soles. >> My limit fo far is 2X500 volt from a falling radio I tried to catch..... >> We both survived. >> Automatic reflexes are so dangerous when you work with electricity. > > Interesting. > > Here in US with 120, the danger is almost always from what you end up > hitting or falling off (like a ladder) /into than from the shock itself. > > I've never been burned from 120 or seen stars or anything like that. I've > touched high voltage DC equipment where it doesn't even matter if only > one hand is in the pocket or or anything like that. At 8kV you're getting > a one handed shock unless you have special boots on. > > The last actual line voltage electrocution story from around here was from > somebody running an electric drill outdoors on a hot day. They sweated > into the drill, couldn't let go and died. > > How often do people drop dead from actual electrocutions in places that > use 240, just doing plain tasks like you might at home or outside? I found the drill story in here, on page 14. http://www.rmmi.org/Safety/documents/FocusFourModule1final.pdf
From: Baron on 15 Jul 2010 15:44 Cydrome Leader Inscribed thus: > Cydrome Leader <presence(a)mungepanix.com> wrote: >> Sjouke Burry <burrynulnulfour(a)ppllaanneett.nnll> wrote: >>> Cydrome Leader wrote: >>>> JW <none(a)dev.null> wrote: >>>>> On Mon, 12 Jul 2010 21:06:30 +0000 (UTC) Cydrome Leader >>>>> <presence(a)MUNGEpanix.com> wrote in Message id: >>>>> <i1g04m$aig$2(a)reader1.panix.com>: >>>>> >>>>>> you can grab a cheap am radio, remove the cover and even just >>>>>> poke around at the parts while it's on. >>>>> Battery powered of course, if poking with your fingers! >>>> >>>> haha, yes. >>>> >>>> So what does mains shock feel like in places with 240? >>> >>> It makes you see stars, and makes your muscles contract violently. >>> And there might be a small burn mark. >>> Having good quality plastic soles under your shoes makes single >>> contact oke. Dont use leather soles. >>> My limit fo far is 2X500 volt from a falling radio I tried to >>> catch..... We both survived. >>> Automatic reflexes are so dangerous when you work with electricity. >> >> Interesting. >> >> Here in US with 120, the danger is almost always from what you end up >> hitting or falling off (like a ladder) /into than from the shock >> itself. >> >> I've never been burned from 120 or seen stars or anything like that. >> I've touched high voltage DC equipment where it doesn't even matter >> if only one hand is in the pocket or or anything like that. At 8kV >> you're getting a one handed shock unless you have special boots on. >> >> The last actual line voltage electrocution story from around here was >> from somebody running an electric drill outdoors on a hot day. They >> sweated into the drill, couldn't let go and died. >> >> How often do people drop dead from actual electrocutions in places >> that use 240, just doing plain tasks like you might at home or >> outside? > > > I found the drill story in here, on page 14. > > http://www.rmmi.org/Safety/documents/FocusFourModule1final.pdf Thanks for that very useful & informative info. -- Best Regards: Baron.
From: Ron M. on 15 Jul 2010 20:24 On Jul 13, 4:32 pm, Jamie <jamie_ka1lpa_not_valid_after_ka1l...(a)charter.net> wrote: > Cydrome Leader wrote: > > JW <n...(a)dev.null> wrote: > > >>On Mon, 12 Jul 2010 21:06:30 +0000 (UTC) Cydrome Leader > >><prese...(a)MUNGEpanix.com> wrote in Message id: > >><i1g04m$ai...(a)reader1.panix.com>: > > >>>you can grab a cheap am radio, remove the cover and even just poke around > >>>at the parts while it's on. > > >>Battery powered of course, if poking with your fingers! > > > haha, yes. > > > So what does mains shock feel like in places with 240? > > Hmm, it hurts..- Hide quoted text - > > - Show quoted text - Yep. RF burns are kinda painful too. But I bet it doesn't compare with that infamous second anode. That one will make you change your shorts for sure. That is if your still able to. Hit one of those when I was in high school. Haven't touched a TV inside once since.
From: Phil on 16 Jul 2010 01:17 On Jul 13, 1:47 am, Rui Maciel <rui.mac...(a)gmail.com> wrote: > I'm looking into picking up electronics as a hobby. What advice can you spare? > > Thanks in advance, > Rui Maciel Become a part of a forum and mingle with other hobbyists.. It's helped me.. I'm a member at http://www.electro-tech-online.com and everyone there will help you with anything you need.. Also, if you want to start building some fun circuits buy a breadboard and start making some simple circuits, a great site that has some fun circuits is http://www.555-timer-circuits.com/ Good Luck!!
From: Jasen Betts on 16 Jul 2010 04:45
On 2010-07-15, baron <baron.nospam(a)linuxmaniac.nospam.net> wrote: > Jasen Betts Inscribed thus: > >> 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. >> > > Nasty ! I'm glad he's OK. I use a GFI on power tool cables. Didn't have them back in 1975, plastic power tools tools were a rarity too. --- news://freenews.netfront.net/ - complaints: news(a)netfront.net --- |