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SAMSINGH
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Join Date: Jan 2010
Posts: 1

ELECTROMAGNATE

01/12/2010 3:31 AM

I SAW A VIDEO ON NATIONAL GEGRAPHY CHANAL 2 DAY AGO I SAW A ECLACTROMAGNATE THEY USED ONLY 4 TOURCH BATTERY AND LIFT THE 500 KG WT HOW CAN BE POSSIBLE
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user-deleted-1105
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Popular Science - Weaponology - New Member United Kingdom - Member - New Member

Join Date: May 2007
Location: Harlow England
Posts: 16512
Good Answers: 670
#1

Re: ELECTROMAGNATE

01/12/2010 3:51 AM

Once the weight is actually touching the electro magnet the holding force is very high.
Inverse square lay, magnetic circuit...etc.

This can be demonstrated with a small DC relay, the holding current is much much less than the pull in current.
You can test this yourself with a relay and a power supply.
Del

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RDGRNR
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Engineering Fields - Instrumentation Engineering - New Member

Join Date: Dec 2009
Location: San Antonio, TX USA
Posts: 844
Good Answers: 29
#2
In reply to #1

Re: ELECTROMAGNATE

01/12/2010 8:18 AM

SPEL CHEK
CAPS LOCK!

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DougRH
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Join Date: Dec 2005
Location: AlBerta in western CAnada
Posts: 442
#3
In reply to #2

Re: ELECTROMAGNATE

01/16/2010 8:59 AM

Re: Useless UnWanted Inventions: For the same reason there are so many unwanted people ?

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