ElecroMagnet

BLmagic's picture

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ElecroMagnet
October 8, 2020 - 3:33am

Hi

1st off like to give Sourav Gupta and Debashis Das, full appreciaion and gratitude on a wiring diagram. as my electronic knowledge is that of a 2yr old :-) Much appreciated, and both a credit to the forum.

Ok. using 2 12v electromagnets powered by a 9v pp3 battery, size 50mm x 20mm & 70mm x 21mm. 25 /50k pull as in pic. Although they do the job, needing something lot thinner, so can be easily consealed inside a magic prop, but have same pull push force. Trying to read up, but a mine field to grasp.

Gathered the more current by increasing the voltage the more magnetic force?  By intoducing capasitors?

Could anyone be good enough to help please.

EM.JPG

 

Debashis Das's picture

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You can always use a flat type lithium battery in conjunction with a boost converter to reduce the overall thickness. else you can take very small lithium batteries like the 052030 and series two of them to get somthin around 8.4V, which would be the maximum voltage for two batteries in series, and the minimum would be 6V.

BLmagic's picture

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That sounds fine, but the thickness of the electromagnet, being 20 -21mm, would still be in use, as the holder for the 9v is 17mm, . :-) As say Yous idea be great if could just reduce the thickness of the electromagnet. Ahh in reality think i may be pushing the ambition of the project little too far :-)  

Did see  information regarding EMP`s, but not keen on idea of blitzing electronic gear etc..

Best wishes my friend. 

 

Debashis Das's picture

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after a few google searches the smallest i could find was of 20 mm(as you have said), i think you need to come up with a different idea altogether. 

BLmagic's picture

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As say the props im making can justify the size to discuise the EM and electrics, so really no big issue to be honest. Reality think was being a little to ambitious :-) You see something then mind is all over in what could be done, in reality sometimes may not be accomplished.

Regards

Sourav Gupta's picture

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I am not sure but you could check a strong small solenoid inductor without the flenger. May work.

Olivia Williams's picture

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An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated in the hole, denoting the centre of the coil.

BL Magic's picture

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Have the idea on how the electromagnet solenoid works. Using the inner iron core will magnify the field strenght significantly i know this. Was looking at an alternative without using an iron core, such as ferrite, but  doubt will get the flux needed. Being a bit ambitious in 1`s thinking, is having as per pic. many purhasable electromagnets come this way, inner and outer is of a magnetic material (steel/iron etc) as there will be a neodymium magnet placed over the top, once the voltage applied to the core the opposing force will tip the neodymium magnet. But the electromagnet being a magneticmaterial the neodymium magnet  will just adhere to it.

 Hope this clarifies what trying to achieve, as copper non magnetic. coiln.png

BL Magic's picture

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Hello

is there a way to contacteither of you via privae mesage, sorry if this is out of forums prtocol.

regards

 

 

Debashis Das's picture

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