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Nannies want to stop you from building mains-powered projects

Started by Don Kuenz April 11, 2019
On Sat, 13 Apr 2019 23:24:52 -0400, krw@notreal.com wrote:

>On Sat, 13 Apr 2019 15:41:22 -0700, John Larkin ><jjlarkin@highlandtechnology.com> wrote: > >>On Sat, 13 Apr 2019 20:12:30 -0000 (UTC), Cursitor Doom >><curd@notformail.com> wrote: >> >>>On Sat, 13 Apr 2019 08:47:02 -0700, John Larkin wrote: >>> >>>> He enjoyed learning that trick. But I've had interns who refused to >>>> touch a PC board that was only powered by 3.3 volts. >>> >>>How long did they last? >> >>A couple of months. Sometimes less. > >We tend to keep them for years, then hire the best as regular >employees. GT does a great job with interns.
I usually get student, summer job people. The advantage of calling someone an intern is that you can evaluate them for three months, and keep or not keep them, more easily than a full hire. Nobody gets fired. We did in fact hire our last two interns after about 2 months each. It shouldn't take more than a few months to figure if someone is a keeper. If you keep them for years, and then just hire the best, a huge bunch of resources were wasted on the others. And they do feel fired. -- John Larkin Highland Technology, Inc lunatic fringe electronics
On 4/13/19 2:31 AM, Sylvia Else wrote:
> On 13/04/2019 5:30 am, John Larkin wrote: > >> >> There is a movement back to old-fashioned free-range children. >> > > And a good thing too. The effect of all the nannying seems to have been > to breed a generation of people who assume that the world is a benign > place, and who are incapable of recognising even quite obvious hazards. > > So we end up with signs warning people not to jump off high rocks into > natural pools of water because it doesn't occur to people that the pool > might not be deep enough. > > Yet there's clearly no end to this - we can't expect to warn of every > possible danger. > > Sylvia. >
Also always remember to take a young white woman along with you every time you go out boating, camping, or hiking. That way if something goes wrong you can be guaranteed there will be hundreds or thousands of people out there trying to find you.
On Sun, 14 Apr 2019 00:28:43 -0400, bitrex <user@example.net> wrote:

>On 4/13/19 2:31 AM, Sylvia Else wrote: >> On 13/04/2019 5:30 am, John Larkin wrote: >> >>> >>> There is a movement back to old-fashioned free-range children. >>> >> >> And a good thing too. The effect of all the nannying seems to have been >> to breed a generation of people who assume that the world is a benign >> place, and who are incapable of recognising even quite obvious hazards. >> >> So we end up with signs warning people not to jump off high rocks into >> natural pools of water because it doesn't occur to people that the pool >> might not be deep enough. >> >> Yet there's clearly no end to this - we can't expect to warn of every >> possible danger. >> >> Sylvia. >> >Also always remember to take a young white woman along with you every >time you go out boating, camping, or hiking.
What's this constant obsession with race about? Really weird. -- John Larkin Highland Technology, Inc lunatic fringe electronics
On 4/14/19 12:43 AM, John Larkin wrote:
> On Sun, 14 Apr 2019 00:28:43 -0400, bitrex <user@example.net> wrote: > >> On 4/13/19 2:31 AM, Sylvia Else wrote: >>> On 13/04/2019 5:30 am, John Larkin wrote: >>> >>>> >>>> There is a movement back to old-fashioned free-range children. >>>> >>> >>> And a good thing too. The effect of all the nannying seems to have been >>> to breed a generation of people who assume that the world is a benign >>> place, and who are incapable of recognising even quite obvious hazards. >>> >>> So we end up with signs warning people not to jump off high rocks into >>> natural pools of water because it doesn't occur to people that the pool >>> might not be deep enough. >>> >>> Yet there's clearly no end to this - we can't expect to warn of every >>> possible danger. >>> >>> Sylvia. >>> >> Also always remember to take a young white woman along with you every >> time you go out boating, camping, or hiking. > > What's this constant obsession with race about? > > Really weird. > >
That was a classic Patrice O'Neal joke, one of the funniest black comedians to come out of Beantown! Guys like Joe Rogan and Bill Burr appropriate a bit of his act but just aren't as good as the original. His material offended liberals quite a bit too so you should be happy about that. Don't be so sensitive! He has a very amusing but very uncomfortable rant about how it's healthy to a man's mental and spiritual development to watch his girlfriend or wife have sex with another man. To strengthen his emotional control or somesuch. Well it's better when he tells it, good comedy should make one feel uncomfortable though
On 2019-04-13, Cursitor Doom <curd@notformail.com> wrote:
> On Sat, 13 Apr 2019 10:28:43 -0700, John Larkin wrote: > >> I theorized that my 1200 volt pulse generator wouldn't shock me (it >> makes 7 ns pulses at 5 MHz maybe) so I grabbed the output. Nothing >> happened. If you tease it with a fingertip, you can get a tiny RF burn. > > I get the exact same sensation from touching an exposed HDMI socket! > Feels like about 110V. No idea why such a voltage should be present on an > unshielded, exposed socket that kids could easily stick in their > mouths. :-/
"Y" capacitors. -- When I tried casting out nines I made a hash of it.
On Sun, 14 Apr 2019 08:01:28 -0000 (UTC), Jasen Betts
<jasen@xnet.co.nz> wrote:

>On 2019-04-13, Cursitor Doom <curd@notformail.com> wrote: >> On Sat, 13 Apr 2019 10:28:43 -0700, John Larkin wrote: >> >>> I theorized that my 1200 volt pulse generator wouldn't shock me (it >>> makes 7 ns pulses at 5 MHz maybe) so I grabbed the output. Nothing >>> happened. If you tease it with a fingertip, you can get a tiny RF burn. >> >> I get the exact same sensation from touching an exposed HDMI socket! >> Feels like about 110V. No idea why such a voltage should be present on an >> unshielded, exposed socket that kids could easily stick in their >> mouths. :-/ > >"Y" capacitors.
A mains filter that has an Y-capacitor is intended to be connected to a Class I grounded socket. If it is connected to a Class 0 ungrounded socket or incorrectly uses an ungrounded (Euro) plug, the device internal chassis is about Vmains/2, which is then visible e.g. in external connectors. At 230 V mains, the connectors would be at about 110 V. In case the chassis is not connected to a grounded plug/socket, the Y-capacitor capacitance should be selected so that the leakage current is not harmful to humans, but may destroy electronics.
On Sat, 13 Apr 2019 15:41:22 -0700, John Larkin wrote:

> A couple of months. Sometimes less.
You're far too charitable. -- This message may be freely reproduced without limit or charge only via the Usenet protocol. Reproduction in whole or part through other protocols, whether for profit or not, is conditional upon a charge of GBP10.00 per reproduction. Publication in this manner via non-Usenet protocols constitutes acceptance of this condition.
On Sat, 13 Apr 2019 21:43:07 -0700, John Larkin wrote:

> What's this constant obsession with race about? > > Really weird.
Sure is. Lefty obsession. -- This message may be freely reproduced without limit or charge only via the Usenet protocol. Reproduction in whole or part through other protocols, whether for profit or not, is conditional upon a charge of GBP10.00 per reproduction. Publication in this manner via non-Usenet protocols constitutes acceptance of this condition.
On 4/14/19 6:45 AM, Cursitor Doom wrote:
> On Sat, 13 Apr 2019 21:43:07 -0700, John Larkin wrote: > >> What's this constant obsession with race about? >> >> Really weird. > > Sure is. Lefty obsession. >
Blazing Saddles: <https://www.youtube.com/watch?v=jGQ-ISsDm8M>
>"What's this constant obsession with race about?"
I wouldn't say he is obsessed with it just because he is willing to make a little joke, or discuss the issue. In fact I think it is more obsessive to consciously avoid the subject.