I am trying to make a Phase shift full bridge with UCC28950. The leakage inductance is insufficient, so I am going to add it externally(shim inductor). The toroidal core is overheating, so I am trying to change it to a ferrite core. At this time, is a gap necessary for the...
The novel principal detector element defines the NMR active portion of the inductance of the electronic resonance circuit. In one embodiment of the invention, the novel principal detector element includes two hemispheres connected by a central rod. The central rod can be of any length and diameter...
7148690Systems, methods and apparatus for inducing electromagnetic mutual inductance in magnetic coils to reduce inhomogeneity in a magnetic field of the magnetic coils2006-12-12Hollis 20050110492Matrix coil for generating a variable magnetic field2005-05-26Watkins et al. ...
The inclusion of design constraints, such as the annulment of mutual inductance between zonal shims and the magnet, is highlighted and production of the current-density function with both wire and cut sheet is briefly discussed. Insights are presented as to why the method, unlike some, gives a...
Chronik, BJamali P, Chronik BA. 2008. Power versus induct- ance: finite length shim coil design for high field MRI. In: Proceedings of the 16th Annual Meeting of the International Society for Magnetic Resonance in Medicine. Toronto, Ontario, Canada. p 1167....
Finite-length shim coil design using a Fourier series minimum inductance and minimum power algorithm [J]. Concepts in Magnetic Resonance Part B: Magnetic Resonance Engineering,2010 ,37B ( 4 ) : 245 - 253.PARISA HUDSON,STEPHEN D. HUDSON,WILLIAM B. HANDLER. Finite-Length Shim Coil Design ...
(SH)terms were designed with constraints of field accuracy,resistance,inductance,and current density.Wire loops and symmetric property influence were discussed to further improve the performance of high-order shim coils.Finally,with the prototype of the shim coils constructed,field pattern and SH ...
shim coilturnsPurpose:To demonstrate systematic, linear algebra-based, dimensional analysis to derive a scaling relationship among the design parameters of MRI gradient and harmonic shim coils. Theory and methods:The dimensions of five physical quantities relevant for gradient coil design (inductance, ...
With similar coil efficiency, the resistance and inductance of the new coils are decreased by 6.4~19.6% and 10.7~28.1%, respectively.doi:10.1007/s10948-022-06249-xNiu, ChaoqunTang, FangfangWang, QiuliangLiu, FengSpringer USJournal of Superconductivity and Novel Magnetism...
A method of manufacturing an electromagnet coil for magnetic resonance imaging (MRI) includes: generating a coil surface representation defining a surface to contain the electromagnet coil; defining a set of performance metric functions, including a mutual inductance function defining mutual inductance ...