Previous in Forum: Microphone Preamp Circuit   Next in Forum: LED Lighting Question
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
2 comments
Rate Comments: Nested
Anonymous Poster

Electromagnet Design

12/28/2007 5:37 AM

Hi ,

I am presently working in designing the Electromagnet for Contactor.With reference to some Design Books, i have selected to go with EE shape cores.By considering certain assumed force ( eg : 500 gram ) i started to proceed the calculation.

1) My doubt whether i should consider F= B²A/2µo or F = 2*B²A/2µo.

2) Based on assumed force i have go further in designing the contact spring or first i have to deside the spring force & then design the Magnet.

Pls advise for the above clarification

Regards

Subramani
Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Anonymous Poster
#1

Re: Electromagnet Design

12/31/2007 6:00 AM

Hi

Look at the energy stored in the airgap:

W=F ds=B H/2 A ds=B^2 /(2 u0) A ds

so F=B^2/(2 u0) A

Regards

Max
Reply
Anonymous Poster
#2

Re: Electromagnet Design

02/24/2008 3:20 AM

PL SEND LAYOUT (GEOMETRY) OF ELECTROMAGNET AND MAGNETIC MATERIAL DATA (FLUX DENSITY VS FIELD INTENSITY AND COPPER WIRE RESISTANCE AND FORCE REQIRED ?

SP SINGH

SPSEEFEE@GMAIL.COM
Reply
Reply to Forum Thread
Have a Different Question?
2 comments

Previous in Forum: Microphone Preamp Circuit   Next in Forum: LED Lighting Question
You might be interested in: Spring and Wire Forming Machines, Spring Pins

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (96 right now)
Show Members
Advertisement