Uploaded September 2021 | Updated September 2026, 2 weeks ago
In a series resonant tank circuit we have 2 magnetic anti nodes and 1 electric antinode. The electric antinode always chooses the side of the capacitor (if only used at 1 side of the coil). The magnetic antinodes are measured with normal coil around ferrite rod. Voltage antinode is measured by placing a scope probe with it's measuring point close to the point we want to measure but not making direct contact.
In the above described situation we see that we need to use coils that change winding direction the moment we pass with that coil across an magnetic antinode.
A picture with overview can be found here: photos.app.goo.gl/ph3udVpweXJoFJTSA
I also show you that by using other type of coil, in this case a ring core coil, we can have opposite result of where nodes and antinodes are in our system.
It's all depended on how good our receiver can receive at that specific point.
You can see that in my case the magnetic antinode looks to be in the middle and the nodes on the outside. The only thing I want to accomplish with this is to make the viewer see that he/she must be carefull by drawing to quick conclusions and say there's nothing in the middle.
In a series resonant tank circuit we have 2 magnetic anti nodes and 1 electric antinode. The electric antinode always chooses the side of the capacitor (if only used at 1 side of the coil). The magnetic antinodes are measured with normal coil around ferrite rod. Voltage antinode is measured by placing a scope probe with it's measuring point close to the point we want to measure but not making direct contact.
In the above described situation we see that we need to use coils that change winding direction the moment we pass with that coil across an magnetic antinode.
A picture with overview can be found here: photos.app.goo.gl/ph3udVpweXJoFJTSA
I also show you that by using other type of coil, in this case a ring core coil, we can have opposite result of where nodes and antinodes are in our system.
It's all depended on how good our receiver can receive at that specific point.
You can see that in my case the magnetic antinode looks to be in the middle and the nodes on the outside. The only thing I want to accomplish with this is to make the viewer see that he/she must be carefull by drawing to quick conclusions and say there's nothing in the middle.
