Recent content by endiewibowo

Maybe it will be more complicated to build that way. I read from that paper (John D. Ramboz), he said that the undesired one-loop has much bigger diameter (the helix itself) compared to the returning loop. I guess he treats the torus as one big loop but I'm not really sure why and how does his...

@sophiecentaur But wait, it's just crossed my mind. I think that the sum of every component of the helix over the torus' circumferential length is normal to the cable. I sketched it and it makes sense. So the helix are treated as one single loop and the flux of that loop is parallel to the...

@sophiecentaur Ah yes! Now I understand it. Thank you very much! I really appreciate your help. So, suppose I don't make a single returning wire but make windings in opposite direction instead. It will reject off axis fields more, right?

Hello @sophiecentaur , thanks for replying. I still don't understand how this 'forward' component can produce small emf when there is any changing magnetic field that's not in the plane of torus. If the returning loop is used to compensate this, it means that the magnetic flux produced by this...

I read on a source from a paper from John D. Ramboz that explains: The incremental pitch-advancement of the coil's helical winding sums over its circumferential length to create an undesirable one-turn loop normal to the axis of the coil (the plane of this loop is parallel to the surface of the...

Okay then. I will try to make both coils and compare the result. Thanks a lot.

Okay, let's say Mrect = Mcircle And suppose the small loop is rectangular as well. To calculate M: So: The integration is easy since the distance x from the current wire to the coil is all the same because of circular symmetry of the big loop. However, if the big loop is rectangular, the...

Let's see. Suppose I is 1kA. So: ∫circulation B⋅ds = Ip*μ0 ∫circulation B⋅ds = 1000 A * 4π*10-7 Vs/Am = 4π*10-4 So then, how is the B ?

I am planning to build a rogowski coil but not the conventional one, which is a circular loop. Below is the example of a rogowski coil so you have the big picture of my question. In the picture, the current conducting wire (with current Ip) is encircled by a big circular loop rogowski coil...