Magnetic circuit design methodologies for dual coil transducers used in public sound reinforcement

1997 ◽  
Vol 102 (5) ◽  
pp. 3079-3079
Author(s):  
Douglas J. Button
Keyword(s):  
Circuit Design ◽  
Magnetic Circuit ◽  
Design Methodologies ◽  
Sound Reinforcement

Influence of Load and Air Gap Dimension on Magnetic Field and Magnetic Circuit Design of a Hightorque Stepmotor

1995 ◽  
pp. 343-346
Author(s):  
Wagner Juraj ◽  
Maga Dušan ◽  
Guba Roman ◽  
Führichová Renáta ◽  
Opaterný Jozef
Keyword(s):  
Magnetic Field ◽  
Circuit Design ◽  
Magnetic Circuit ◽  
Air Gap

Magnetic Circuit Design of Galfenol Composite Cantilever

2021 ◽  
pp. 283-294
Author(s):  
Qinghua Cao ◽  
Jinming Zang ◽  
Nannan Wu ◽  
Zhifeng Zhou
Keyword(s):  
Circuit Design ◽  
Magnetic Circuit

Magnetic Circuit Design and Analysis Used in Magnetic Sealing Drive Device

2014 ◽  
Vol 875-877 ◽  
pp. 2047-2050
Author(s):  
Ding Zhong Tan ◽  
Ying Qiu ◽  
Qi Ming Wang
Keyword(s):  
Circuit Design ◽  
Magnetic Circuit ◽  
Arc Length ◽  
Magnetic Pole ◽  
Matching Problem ◽  
Drive Torque ◽  
Power Matching ◽  
Design Requirements ◽  
Pole Surface

according to the requirement of designing the magnetic sealing drive, the magnetic sealing drive torque design and calculation is completed. It is also analyzed the magnetic circuit and the whole structure of the drive. The matching problem of magnet thickness and arc length of magnetic pole surface is analyzed. The research also includes the method to calculate torque of combination of push pull magnetic circuit and method of its power matching calculation and correction. The magnetic sealing drive is tested and the results show that the design of the magnetic sealing drive complies with the design requirements.

scholarly journals Magnetic Circuit Design and Magnetic Field Finite Element Analysis of Converging Stepped Magnetofluid Seal with Small Clearance

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Xiaolong Yang ◽  
Guohong Wang ◽  
Ruibo Zhang
Keyword(s):  
Magnetic Field ◽  
Finite Element Method ◽  
Finite Element ◽  
Circuit Design ◽  
Magnetic Circuit ◽  
Element Analysis ◽  
Small Clearance ◽  
Calculation Results ◽  
Theoretical Pressure ◽  
Element Method

The stepped magnetofluid seal is an effective method for improving the pressure ability of ordinary magnetofluid seals (OMS) with large clearance. At present, the research on stepped magnetofluid seal with less than 0.4 mm small clearance has not been carried out yet. The equivalent magnetic circuit design of converging stepped magnetofluid seal (CSMS) with small clearance has been carried out and verified by magnetic field finite element method based on the CSMS theory and magnetic circuit theory. The effects of the width of the axial seal position, the height of the radial seal position, the number of the pole tooth in the axial seal position, and the number of the pole tooth in the radial seal position on the theoretical pressure ability of the CSMS are investigated by numerical simulation. The calculation results are analyzed and discussed. The results show that the magnetic flux leakage at the junction of the permanent magnet and pole piece causes the higher pressure ability of the CSMS structure designed by the equivalent magnetic circuit method than that calculated by the magnetic field finite element method. When the width of the axial seal position is greater than the height of the radial seal position and the number of pole teeth in the axial seal position is less than the number of pole teeth in the radial seal position, the CSMS has the best effect. Compared with OMS with small clearance, CSMS has greater advantages.

FEM-Based Lifting Permanent Magnetic Chuck Design

2013 ◽  
Vol 655-657 ◽  
pp. 355-358 ◽  
Author(s):  
Ning Ding ◽  
Yu Mei Song ◽  
Lina Wang ◽  
Ding Tong Zhang ◽  
Li Gong Ding
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Permanent Magnet ◽  
Circuit Design ◽  
Magnetic Circuit ◽  
Saving Energy ◽  
Driving System ◽  
Working Principle ◽  
Optimal Saving ◽  
Element Method

The optimal saving energy permanent magnet lifting chuck has been designed. Working principle of this technology is introduced. Magnetic circuit design is carried out by finite element method (FEM). At the same time, a perfect self-acting driving system has been invented for picking and releasing loads fast and conveniently without using any electricity at all. Industry prototype was manufactured, and it verified that the proposed lifting permanent magnetic chuck was feasible.

Effective Circuit Design Methodologies for Standby Leakage Power Reduction

2020 ◽  
Vol 12 (2) ◽  
pp. 168-172
Author(s):  
Manish Kumar ◽  
Md. Anwar Hussain ◽  
Sajal K. Paul
Keyword(s):  
Circuit Design ◽  
Supply Voltage ◽  
Cmos Technology ◽  
Logic Circuits ◽  
Power Reduction ◽  
Leakage Power ◽  
Model Parameters ◽  
Mos Transistor ◽  
Design Methodologies ◽  
Transistor Model

This paper presents circuit level design methodologies for significantly reducing the standby leakage power. Layout of different CMOS logic circuits such as a 2-input XOR, a 2-input XNOR, and a 4-input XNOR are designed and simulated by using BSIM4 MOS transistor model parameters. Layout simulations are done at a supply voltage of 0.4 V in 45 nm CMOS technology. Logic circuits designed by using the proposed circuit design methodologies proved to be effective in minimizing the standby leakage power. All layout design and simulation of the circuits are carried out by using Microwind EDA software (version 3.1).

Magnetic Circuit Design for Six-Wire Suspension Type Actuator in a Super Multioptical Pickup

2008 ◽  
Vol 44 (5) ◽  
pp. 598-604 ◽  
Author(s):  
Buqing Zhang ◽  
Jianshe Ma ◽  
Longfa Pan ◽  
Xuemin Cheng ◽  
Hua Hu ◽  
...  
Keyword(s):  
Circuit Design ◽  
Magnetic Circuit ◽  
Wire Suspension

scholarly journals Magnetic Field Effect in the Process of Rinsing a Magnetic Separator Matrix

1988 ◽  
Vol 2 (3) ◽  
pp. 119-136
Author(s):  
Jiri Galas
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Circuit Design ◽  
Field Effect ◽  
Magnetic Circuit ◽  
Magnetic Field Effect ◽  
Magnetic Separator ◽  
High Gradient ◽  
First Time

This paper surveys fundamental aspects of the problem of rinsing matrices in high gradient magnetic separators. This is done, for the first time, in terms of the magnetic circuit design. Equations have been constructed to describe the effects of spurious remanent magnetic fields on the rinsing process.

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