This page lists all the calculators available on Encyclopedia MagneticaI am using 1.8x1.8 m magnetic coil 30 A/m with 220 V and 60 Hz
How to calculate current I
What is the intended purpose/application?I am using 1.8x1.8 m magnetic coil 30 A/m with 220 V and 60 Hz
How to calculate current I
Number of turns is 12Measure the resistance, because that is a small coil without much inductance, unless the description just neglected to mention the details, which we have none. I=E/R
Not a word about the construction, core, number of turns, or wire size.
Did you calculate the inductive reactance of that coil at 60 Hz??? The TS was not asking for an exact answer, based on the lack of information provided.Resistance is nothing to do when in AC. In DC yes, then i=V/R. But in AC the X(L)>>R thus the i=V/X(L) where x(L)=2pi()fL. If want very exact, may add the active component by Pythagorus: Z=sqrt(X(L)^2+R^2). But R and X ratio rather sharp differs by moving the core in and out, thus the most exact method is to measure. LATR+Ammeter+Vmeter+magnet. What is permissible current may dedicate seeing the wire diameter. A=pi()r^2/4 and permissibl;e is 2 A/mm2 when bibbin is perfctly cool, and 3...3.5 A/mm2 when it is hot on the edge, and up to 5 A/mm2 for rare short applications like lock unlocking. One minute work and one hour to cool.
I am using 1.8x1.8 m magnetic coil 30 A/m with 220 V and 60 Hz
How to calculate current I
I hope, TS already calculated, that 12-turn 1.8 x 1.8 m rectangular coilNumber of turns is 12
May I know how did u get I = 5AI hope, TS already calculated, that 12-turn 1.8 x 1.8 m rectangular coil
has magnetic field strength H = 30 A/m in its center
at current I = 5A.
by using the above formula and inserting x=12 a=1.8 and b=1.8 but still i was not able to get the answer 60
i also inserted by using x=0
x is location from the center of the loop (the centre is located at point x = 0),by using the above formula and inserting x=12 a=1.8 and b=1.8 but still i was not able to get the answer 60
Double check your calculation. With x=0 answer should be 60.i also inserted by using x=0
by Jake Hertz
by Jeff Child
by Jake Hertz