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xyz
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Join Date: Nov 2011
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Energy Need to Operate a Magnetic Switch

11/27/2012 4:08 AM

MAGNETIC SWITCH

How to compute power or Force required operate a magnetic switch?

It is known that Force of attraction between two magnetic poles of opposing polarity is F = µo*µr *P1*P2/(4*p*d^2) where P1 & P2 are magnetic strength expressed in Ampere meter, and d = distance between two poles.

Which force will be more - in case 1 or 2? This is just a simple conceptual diagram. Do assume that magnetic path will be completed through the magnet and the coil. The objective is to compute energy or power (in time t) needed to break this magnetic closed loop.

Generator / motor design experts may have answers.
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Anonymous Poster #1
#1

Re: Energy need to operate a magnetic switch

11/27/2012 4:51 AM

E=2/5 f(α)3.
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RAMConsult
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Engineering Fields - Power Engineering - New Member

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Location: NYC metropolitan area.
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#2

Re: Energy Need to Operate a Magnetic Switch

11/27/2012 8:47 AM

"...Generator / motor design experts may have answers...", we do, and the way we got that knowledge was from doing our own homework. Here's a hint though, it's called a solenoid problem, something that you can Google for yourself, or wait for another member of CR4 to do it for you.

"Give a man a fish and he eats for a day, Teach a man to fish and he eats for life."

When you get stuck on a topic during your research, come back with your doubts and we'll help you fish.

__________________
 “Tell me and I forget. Teach me and I remember. Involve me and I learn.” Ben Franklin.
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Fredski
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#3
In reply to #2

Re: Energy Need to Operate a Magnetic Switch

11/27/2012 10:22 AM

put me in the google camp on this one
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Doorman
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Hobbies - DIY Welding - Don't Know What Made The Old Title Attractive... Popular Science - Weaponology - New Member United States - US - Statue of Liberty - 60 Year Member

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#4
In reply to #2

Re: Energy Need to Operate a Magnetic Switch

11/27/2012 10:24 AM

"... Teach a man to fish and he eats for life."

If you teach a Doorman to fish he will sit in the boat and drink beer all day.

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 Semper Ubi Sub Ubi
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ronseto
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Technical Fields - Technical Writing - New Member Engineering Fields - Marine Engineering - New Member

Join Date: Sep 2008
Location: Vancleave, Ms about 30 miles inland from Biloxi and the coast
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#5

Re: Energy Need to Operate a Magnetic Switch

11/27/2012 4:05 PM

Why go to all the trouble? Just use different magnet/switch combinations to find one that works.It ain't rocket science.

__________________
 Mr.Ron from South Ms.
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