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Post Info TOPIC: Any electrical/electronic/math questions you need answered?
WT


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Any electrical/electronic/math questions you need answered?


Answering these will keep me off the streets.biggrin



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I wish I had a good question for you, I'll work on it.

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I could go dig out one of my old books on transformer theory and large power transformers, and see if I could give you a stumper, or something on long distance high voltage lines and capacitance and voltage increases.

Just pokin' at ya', not tryin' to be a smart a$$.



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Rrumbler - Broken and grouchy, but not dead - yet. Bangin' and twistin' on stuff for some sixty years or so.
WT


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Rrumbler wrote:

I could go dig out one of my old books on transformer theory and large power transformers, and see if I could give you a stumper, or something on long distance high voltage lines and capacitance and voltage increases.

Just pokin' at ya', not tryin' to be a smart a$$.


 I worked on low power electrical/electronics so HV is probably out of my bailiwick.  cry

I do have some novel ways of troubleshooting house wiring, though.  



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OK. Just sort of a loose idea I have floating in my head, but if I have a mini-van and convert it to electricity, using a 10 HP 36 volt motor, how many watts of electricity will it use? Rough number here, no decimal points needed.

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WT


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At 85% efficient, it's 8800W which is 240A at 36V.  BTW, there is at least one elec. vehicle forum on the Web.


If you use lead acid batts you'll need "deep cycle" and you should look up the Peukert Effect.  

To find the max watt-hours per pound of vehicle weight or w-h/mile you can expect, look up the Tesla vehicle.  






-- Edited by WT on Tuesday 20th of March 2012 03:02:29 PM



-- Edited by WT on Tuesday 20th of March 2012 03:03:22 PM

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can i make a generator just usin magnets?


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WT


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geezer69 wrote:

can i make a generator just usin magnets?


 Magnets, wire and rotation.  

How much power you want?  IIRC these old phone magnetos could supply 10W at normal cranking speeds and one time I got 300v out of it by running it off the back wheel of a bike.



-- Edited by WT on Tuesday 20th of March 2012 03:13:29 PM

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i mean fixed magnets turnin a shaft.not electro magnets.no other power.


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When I wuz a boy scoot, I made a battreee out of a lemon, a galvanized nail and a copper penny but it wouldn't operate anything except my imagination. biggrin



-- Edited by Mello Yello on Tuesday 20th of March 2012 03:43:47 PM

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WT


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geezer69 wrote:

i mean fixed magnets turnin a shaft.not electro magnets.no other power.


 That's supposed to be perpetual motion which is supposed to be impossible but in the book "Patent It Yourself" by David Pressman he gives the patent number for such a device.  

When I worked at the Patent Office I read that patent.  It had springs and put out a very irregular motion, and I don't think it self-started.

You can maybe find that patent online.



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i believe where theres a will theres a way. i dream bout this dang stuff. if one magnet can push another theres a way to use em to produce power. i dont care what folks say. anything can be done.ive seen a lot of fakes on line. i got one to turn nearly a complete circle but its needs a fine tune.i think everbody has ben makin it too complecitated.

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WT


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Here's the patent

http://www.google.com/search?client=safari&rls=en&q=4151431&ie=UTF-8&oe=UTF-8#hl=en&safe=off&client=safari&rls=en&sclient=psy-ab&q=patent+4151431+permanent+magnet+motor&oq=patent+4151431+permanent+magnet+motor&aq=f&aqi=&aql=&gs_sm=3&gs_upl=22900l34169l0l34825l38l34l4l0l0l1l191l2621l28.6l39l0&gs_l=serp.3...22900l34169l0l34825l38l34l4l0l0l1l191l2621l28j6l39l0.frgbld.&pbx=1&bav=on.2,or.r_gc.r_pw.r_qf.,cf.osb&fp=b5e1acad081499c7&biw=1111&bih=768

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My fantasy vehicle would be a mini-van sized unit with solar panels on the roof that works. But seeing the wattage req'd pretty much shoots that down as the panels at best might generate 300 watts +/- and if I need 8800 watts, I'd be a little short of "getting 'er done". But at least the panels would extend the range and help recharge when parked.

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WT


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For some reason the forum display has the text running off the right edge of the page.

The Solar Constant is 1 kw/(sq. meter) and if PV panels are 16% efficient you'd get 160w per square meter of panel so to get 9 kW you'd need 56 sq. meters of panel. The average US house takes 1 kw on average.

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