Magic capacitors!
in [Design]
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From: Martin Brown on 11 Aug 2010 11:22 On 11/08/2010 15:37, John Larkin wrote: > On Wed, 11 Aug 2010 00:00:10 -0700 (PDT), Bill Beaty > <billb(a)eskimo.com> wrote: > >> On Aug 8, 10:14 pm, John Larkin >> <jjlar...(a)highNOTlandTHIStechnologyPART.com> wrote: >> >>> For Pete's sake, we all took physics. We understand this stuff. But we >>> need to talk about these things quickly... you should hear some of the >>> sessions around here. >> >> The "we" I'm talking about is little kids and grandmothers. [Move >> this thread to SEB instead of SED? :) ] If we want to explain >> basic circuitry to the general public, we first need to go over the >> traditional explanations with a fine tooth comb. Get rid of >> contradictions, and suddenly E&M stops resembling a black art. > > Explain electronics to the general public? You've got to be kidding. > The GP drives cars but hardly any understand Newton's laws, much less > the rotational versions of same. > > When our building was being wired up, I showed one of the electricians > a sketch of a triangle with a center-tap on one leg, the basic > "stinger" diagram. He said "we don't do that theory stuff." But he > sure could bend conduit beautifully; he was an artist. Does he bother doing the load capacity and balancing calculations? > > Teach them COE and some simple mechanics first. My wife wants me to > put a windmill on our roof. You really don't want it on the roof the noise will drive you crazy and the local turbulence will not make the turbine work well either. Our present UK Prime Minister had one on his home or was going to until they realised it would be a total disaster when monitored. A lot of commercial wind turbine in the UK are installed to farm the grants rather than the wind. Few places in lowland England have anything like a strong enough wind to be worthwhile sites. Snag is that generating capacity scales with the cube of windspeed and they have to feather if it gets too windy. I think the vertical axis Darius rotors are about the nicest looking. A 6kW unit in a region with average windspeed of 6m/s or more will payback on almost commercial terms depending on future electricity prices and subsidies - toy ones for small yatchs are everywhere now. A low tech one using a sawn in half 45 gallon drum, alternator and bearings from a car was published around 1970. Offer to build her one of those if pressed....here's a page with details in those arcane "English" units you insist on using. http://mb-soft.com/public/wind.html Regards, Martin Brown
From: John Larkin on 11 Aug 2010 11:57 On Wed, 11 Aug 2010 16:22:40 +0100, Martin Brown <|||newspam|||@nezumi.demon.co.uk> wrote: >On 11/08/2010 15:37, John Larkin wrote: >> On Wed, 11 Aug 2010 00:00:10 -0700 (PDT), Bill Beaty >> <billb(a)eskimo.com> wrote: >> >>> On Aug 8, 10:14 pm, John Larkin >>> <jjlar...(a)highNOTlandTHIStechnologyPART.com> wrote: >>> >>>> For Pete's sake, we all took physics. We understand this stuff. But we >>>> need to talk about these things quickly... you should hear some of the >>>> sessions around here. >>> >>> The "we" I'm talking about is little kids and grandmothers. [Move >>> this thread to SEB instead of SED? :) ] If we want to explain >>> basic circuitry to the general public, we first need to go over the >>> traditional explanations with a fine tooth comb. Get rid of >>> contradictions, and suddenly E&M stops resembling a black art. >> >> Explain electronics to the general public? You've got to be kidding. >> The GP drives cars but hardly any understand Newton's laws, much less >> the rotational versions of same. >> >> When our building was being wired up, I showed one of the electricians >> a sketch of a triangle with a center-tap on one leg, the basic >> "stinger" diagram. He said "we don't do that theory stuff." But he >> sure could bend conduit beautifully; he was an artist. > >Does he bother doing the load capacity and balancing calculations? If so, he must do them in his head. >> >> Teach them COE and some simple mechanics first. My wife wants me to >> put a windmill on our roof. > >You really don't want it on the roof the noise will drive you crazy and >the local turbulence will not make the turbine work well either. Our >present UK Prime Minister had one on his home or was going to until they >realised it would be a total disaster when monitored. Gosh. Thanks. I'll tell her that. John
From: Nunya on 11 Aug 2010 13:44 On Aug 11, 7:37 am, John Larkin <jjlar...(a)highNOTlandTHIStechnologyPART.com> wrote: > On Wed, 11 Aug 2010 00:00:10 -0700 (PDT), Bill Beaty > > <bi...(a)eskimo.com> wrote: > >On Aug 8, 10:14 pm, John Larkin > ><jjlar...(a)highNOTlandTHIStechnologyPART.com> wrote: > > >> For Pete's sake, we all took physics. We understand this stuff. But we > >> need to talk about these things quickly... you should hear some of the > >> sessions around here. > > >The "we" I'm talking about is little kids and grandmothers. [Move > >this thread to SEB instead of SED? :) ] If we want to explain > >basic circuitry to the general public, we first need to go over the > >traditional explanations with a fine tooth comb. Get rid of > >contradictions, and suddenly E&M stops resembling a black art. > > Explain electronics to the general public? You've got to be kidding. > The GP drives cars but hardly any understand Newton's laws, much less > the rotational versions of same. > > When our building was being wired up, I showed one of the electricians > a sketch of a triangle with a center-tap on one leg, the basic > "stinger" diagram. He said "we don't do that theory stuff." But he > sure could bend conduit beautifully; he was an artist. > > Teach them COE and some simple mechanics first. My wife wants me to > put a windmill on our roof. > > John Damn, Johnny! You do a better job of insulting everyone around you than our president does. No, I do not refer to my company president. This is a truly defining moment. Wait! We all already knew this about you , Johnny! Other folks named John dislike you being in their group as you sully the name. That is sad, considering the name and its history. You are the weakest link. Goodbye!
From: Nunya on 11 Aug 2010 13:49 On Aug 11, 8:57 am, John Larkin <jjlar...(a)highNOTlandTHIStechnologyPART.com> wrote: > On Wed, 11 Aug 2010 16:22:40 +0100, Martin Brown > > > > <|||newspam...(a)nezumi.demon.co.uk> wrote: > >On 11/08/2010 15:37, John Larkin wrote: > >> On Wed, 11 Aug 2010 00:00:10 -0700 (PDT), Bill Beaty > >> <bi...(a)eskimo.com> wrote: > > >>> On Aug 8, 10:14 pm, John Larkin > >>> <jjlar...(a)highNOTlandTHIStechnologyPART.com> wrote: > > >>>> For Pete's sake, we all took physics. We understand this stuff. But we > >>>> need to talk about these things quickly... you should hear some of the > >>>> sessions around here. > > >>> The "we" I'm talking about is little kids and grandmothers. [Move > >>> this thread to SEB instead of SED? :) ] If we want to explain > >>> basic circuitry to the general public, we first need to go over the > >>> traditional explanations with a fine tooth comb. Get rid of > >>> contradictions, and suddenly E&M stops resembling a black art. > > >> Explain electronics to the general public? You've got to be kidding. > >> The GP drives cars but hardly any understand Newton's laws, much less > >> the rotational versions of same. > > >> When our building was being wired up, I showed one of the electricians > >> a sketch of a triangle with a center-tap on one leg, the basic > >> "stinger" diagram. He said "we don't do that theory stuff." But he > >> sure could bend conduit beautifully; he was an artist. > > >Does he bother doing the load capacity and balancing calculations? > > If so, he must do them in his head. > > > > >> Teach them COE and some simple mechanics first. My wife wants me to > >> put a windmill on our roof. > > >You really don't want it on the roof the noise will drive you crazy and > >the local turbulence will not make the turbine work well either. Our > >present UK Prime Minister had one on his home or was going to until they > >realised it would be a total disaster when monitored. > > Gosh. Thanks. I'll tell her that. > > John Then again, you could mechanically couple it to your bed frame. She'd adore that. At least once.
From: John Larkin on 11 Aug 2010 14:04
On Wed, 11 Aug 2010 10:53:46 -0400, Spehro Pefhany <speffSNIP(a)interlogDOTyou.knowwhat> wrote: >On Wed, 11 Aug 2010 07:37:42 -0700, John Larkin ><jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: > >>On Wed, 11 Aug 2010 00:00:10 -0700 (PDT), Bill Beaty >><billb(a)eskimo.com> wrote: >> >>>On Aug 8, 10:14�pm, John Larkin >>><jjlar...(a)highNOTlandTHIStechnologyPART.com> wrote: >>> >>>> For Pete's sake, we all took physics. We understand this stuff. But we >>>> need to talk about these things quickly... you should hear some of the >>>> sessions around here. >>> >>>The "we" I'm talking about is little kids and grandmothers. [Move >>>this thread to SEB instead of SED? :) ] If we want to explain >>>basic circuitry to the general public, we first need to go over the >>>traditional explanations with a fine tooth comb. Get rid of >>>contradictions, and suddenly E&M stops resembling a black art. >> >>Explain electronics to the general public? You've got to be kidding. >>The GP drives cars but hardly any understand Newton's laws, much less >>the rotational versions of same. >> >>When our building was being wired up, I showed one of the electricians >>a sketch of a triangle with a center-tap on one leg, the basic >>"stinger" diagram. He said "we don't do that theory stuff." But he >>sure could bend conduit beautifully; he was an artist. >> >>Teach them COE and some simple mechanics first. My wife wants me to >>put a windmill on our roof. >> >>John > >Exellent idea. Be sure to put a nice induction motor on there so that >it can be spinning like mad even when it's dead calm. You'll be the >envy of your neighbors. And, spinning even when there's no wind, save a lot more energy. John |