Recent content by ritecliq

Hi Guys, I am looking at having a new electromagnet created using 2mm wire and 200 turns at 200mm. I want to use sheets of mu-metal or metglas (higher permeability) as the core. Is this recommended and will this still give me magnetisation in 5 milliseconds like the iron laminated core...

Hi meBigGuy, Ok so the radius 400mm^2 expressed in meters = .04m^2 or 40cm^2. A coil radius (r) of 3.57 gives an area (A) of 40cm^2. Is this correct? So the coil has an inductance of 1811mH? Thanks, Dale.

@meBigGuy Forgive my ignorance but how did you work out the coil radius? -Dale.

Hi, The core is a laminated core, exactly the same as a transformer core. Sorry I have another electromagnet that is a solid core. Got them mixed up. But the one I am using has a laminated core. 5 milliseconds I'm sure is enough. I have been looking into RLC circuits. The aim...

Hi Guys, Attached is the simple diagram. When the DPST switch closes, the capacitor charges up. Then the DPST is open to isolate the electromagnet from the supply. When the push button switch closes, the cap discharges through the 20 ohm resistor into the electromagnet. The 20ohm...

Thanks for the help. Sorry I can't seem to grasp this. I meant to say 40 Amps across the coil. The coil is 600 turns (3 layers of 200) of 1mm enamelled copper wire. My pulse is rather short, just a discharge from a 4700uF Cap. I'm trying to make the biggest magnetic field I can with the 30V...

Electromagnets and voltage Hi Guys, I have a short DC Pulse of 30V 1A and I am trying to feed this through a electromagnet to get the biggest magnetic field possible. I have been told that electromagnets require voltage and not current. Is this correct? Using different circuits, I have...

Sorry to be confusing. When the electromagnet has 30V applied, it does short to my 30V supply. Thanks, Dale.

Thanks for your help guys, So I need to increase the number of turns to increase the resistance to have less amps across the wire? Will this reduce the magnetic field generated by the electromagnet? Yes I have used brand new enamelled copper wire bought in a roll and not reused transformer...

Hi Guys, I'm hoping that someone here can help me. I have an electromagnet that when pulsed creates a short across the 30v supply. If I increase the resistance in series with the electromagnet to stop the short, will this reduce the strength of the electromagnet? Is there a way to...