Sensing Device for In-Line EMI Checker of Small Electric Appliances (Special Issue on Discharge and Electromagnetic Interference)
スポンサーリンク
概要
- 論文の詳細を見る
This paper discusses the design of a small sensing device for EMI measurement which has equivalent characteristics to the absorbing clamp method, and reports the results on evaluation of the device. The device can be applied to the inspection apparatus for products such as power tools to examine conformance to EMI regulations of electromagnetic radiation spectrum. For reducing the scale of the EMI inspection apparatus, new matching circuit being replaced with the absorbing clamp method is adopted in the sensing device. Length of the sensing device is smaller than one twelfth of a wavelength of the measuring frequency in order to regard the sensing device as a concentrated constant circuit. The matching circuit is a resonant circuit which consists of a coaxial coupled transformer and a variable capacitor, and the transformer is a spiral copper tube in which a pair of AC power line wires passes. Resonant frequency of the circuit is tuned to the measuring frequency by adjusting the variable capacitor so that the circuit would terminate the power line by impedance zero. Thus interference current propagating along the power line from a product is absorbed, and observed by means of a VHF current probe which is settled in the matching circuit. A simple circuit for measurement of noise amplitude distribution (NAD) of interference current was developed as well as an equation to estimate quasi-peak value from the NAD. Result of measurement by the sensing device and proposed procedure confirmed good correlation with the standard absorbing clamp method, and deviation Was within ±3dB. Measurement time was reduced to 25 s per product, and the in-line EMI checker with new sensing device can be employed in a mass production line.
- 社団法人電子情報通信学会の論文
- 1996-04-25
著者
-
Kitamura T
Material And Life Science Graduate School Of Engineering Osaka University
-
Suzuki Shun
Hitachi Koki Co. Ltd.
-
Kitamura Takayuki
Material And Life Science Graduate School Of Engineering Osaka University
-
Nemoto Y
Graduate School Of Information Sciences Tohoku University
-
Sone H
Tohoku University
-
Koizumi T
Nihon Spindle Mfg. Co. Ltd.
-
KOIZUMI Toshiaki
Hitachi Koki Co., Ltd.
-
TAKAHASHI Kumio
Hitachi Koki Co., Ltd.
-
SONE Hideaki
the Faculty of Engineering, Tohoku University
-
NEMOTO Yoshiaki
the Faculty of Engineering, Tohoku University
-
Kishima Takamasa
Nihon Spindle Mfg. Co. Ltd.
-
Takahashi K
Keio Univ. Yokohama‐shi Jpn
関連論文
- Morphology-Control in Microwave-Assisted Synthesis of Silver Particles in Aqueous Solutions
- Blue Phosphorescence of the Novel Dinuclear Gold(I) Complex Bridged by 1, 3-Benzenedithiolate in Solution
- Pore Size Distribution and Porosities of Nano-TiO_2 Films Made by Using Cellulosic Thickener and Their Influence on Performance of Dye-Sensitized Solar Cells
- Detoxification of Chlorinated Aromatics Adsorbed on Fly Ash under Microwave Irradiation(Chemical Applicatio)(Recent Trends on Microwave and Millimeter Wave Application Technology)
- Detoxification of Chlorinated Aromatics Adsorbed on Fly Ash under Microwave Irradiation
- Aggregation through the Quadrupole Interactions of Gold(I) Complex with Triphenylphosphine and Pentafluorobenzenethiolate
- Temperature-Dependent Solid-state Luminescence and Reversible Phase Transition of (n-Bu_4N)[Au(SC_6H_3-3, 5-Me_2)_2]
- The Effect of MgO on the Enhancement of the Efficiency in Solid-State Dye Sensitized Photocells Fabricated with SnO_2 and CuI
- Application of Poly(3,4-ethylenedioxythiophene) to Counter Electrode in Dye-Sensitized Solar Cells
- Quasi-Solid-State Dye-Sensitized Solar Cell with Ionic Polymer Electrolyte
- Dye-sensitized Solar Cells Using Brookite Nanoparticle TiO_2 Films as Electrodes
- An Early Warning System for Illegal Access Based on Distributed Network Monitoring, Vol.J86-B,No.3, pp.410-418
- Mobility Management for IP/LEO Satellite Networks Using Geographical Location
- A New Scheme of Combining Advanced Packet Discard and Dynamic Bandwidth Allocation for Low Delay/Low litter Realtime Communication Using CBQ/ALTQ(Special Issue on Network Software)
- Proposal of Dynamic Bandwidth Allocation Technique for Low Delay/Low Jitter Realtime Communication and Its Evaluation by Using CBQ (Special Issue on New Developments on QoS Technologies for Information Networks)
- A Real-Time Intrusion Detection System (IDS) for Large Scale Networks and Its Evaluations (Special Issue on New Paradigms in Network Management)
- A Proposal of Event Correlation for Distributed Network Fault Management and Its Evaluation (Special Issue on Distributed Processing for Controlling Telecommunications Systems)
- The Dynamic Symptom Isolation Algorithm for Network Fault Management and Its Evaluation (Special Issue on the Latest Development of Telecommunication Research)
- Construction and Utilization Experiment of Multimedia Education System Using Satellite ETS-V and Internet (Special Issue on Educational System using Multimedia and Communication Technology)
- Problems in Management Information Retrieval for High-Speed Networks and a Proposed Solution (Special Issue on Multimedia on Demand)
- New Technologies of KrF Excimer Laser Lithography System in 0.25 Micron Complex Circuit Patterns (Special Issue on Quarter Micron Si Device and Process Technologies)
- Quarter Micron KrF Excimer Laser Lithography (Special Issue on Sub-Half Micron Si Device and Process Technologies)
- Electrochemical Change of the Photonic Stop Band of the Ordered Macroporous WO_3 Films
- Improved Solid-State Dye Solar Cells with Polypyrrole using a Carbon-Based Counter Electrode
- Nanocrystalline TiO_2 Electrodes Prepared by Water-Medium Screen Printing Technique
- Enhanced Photocatalytic Dechlorination of 1,2,3,4-Tetrachlorobenzene Using Nanosized CdS/TiO_2 Hybrid Photocatalyst under Visible Light Irradiation
- Fabrication of Solid-State Dye-Sensitized TiO_2 Solar Cell Using Polymer Electrolyte
- Macroporous ZnO Films Electrochemically Prepared by Templating of Opal Films
- A New One-Pot Synthesis of Bisperfluoroalkanesulfonylamides and Bispentafluorobenezensulfonylamide as Potassium Salts
- Photosensitized Luminescence of Neodymium(III) Coordinated with 8-Quinolinolates in DMSO-d_6
- Microwave-Assisted Hydrogenation of Chlorinated Phenols for Complete Dechlorination
- CONFIGURATION MANAGEMENT USING THE DIRECTORY SERVICES
- Intelligent MIB'S(Management Information Base) In Network Management
- Pd^II-Catalyzed Reaction of Phenols with Propiolic Esters. A Single-Step Synthesis of Coumarins
- Direct Synthesis of Coumarins by Pd(II)-Catalyzed Reaction of Alkoxyphenols and Alkynoates
- Direct Synthesis of β-Alkenylpyrroles by Pd(II)-Catalyzed Addition of Pyrroles to Alkynoates
- Pd(II) or Pt(II)-Catalyzed Hydroarylation of Alkynes by Arenes
- A Satellite Selection Method for Walker Delta LEO Satellite Networks(Recent Fundamental Technologies for Broadband Satellite Communications)
- A New Coding Scheme for Infrared ASK Communication Systems Which Have Zero-Spectrum Points within the Main-Lobe Region (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
- A New Coding Scheme for Infrared ASK Communication Systems Which Have Zero-Spectrum Points within the Main-Lobe Region (Joint Special Issue on Recent Progress in Optoelectronics and Communications)
- A Fundamental Study on Effect of Contact Condition for Electromagnetic Noise at Copper-Carbon Electrodes (Special Issue on Electromechanical Devices and Their Materials)
- An Upper Bound on Bandwidth Requirement and Its Applications to Traffic Control in ATM Networks (Special Issue on the Latest Development of Telecommunication Research)
- A High-Resolution Measurement System for Surface Profile of Electric Contact
- Usage Parameter Control Scheme for ATM Networks : Markovian State-Dependent Approach
- High Accuracy Recognition of ETL9B Using Exclusive Learning Neural Network-II : ELNET-II (Special Issue on Character Recognition and Document Understanding)
- Sensing Device for In-Line EMI Checker of Small Electric Appliances (Special Issue on Discharge and Electromagnetic Interference)
- An Adaptive Leaky Bucket mechanism as a Policing Function in ATM networks
- Fabrication of Quasi-solid-state Dye-sensitized TiO_2 Solar Cells Using Low Molecular Weight Gelators
- Enhanced Luminescence of Lanthanide (III) Complexes in Polymer Matrices
- First Observation on Photosensitized Luminescence of Nd^ in Organic Solution
- Near-infrared Electroluminescence from Ytterbium(III)Complex
- Network Design and System Performance of FREDERIC : File Retrieval Engineering on Distributed EnviRonment and Interactive Communication System (Special Issue on the Latest Development of Telecommunication Research)
- Network and System Design for Cooperative Work of Remote CAD Database over Global Internet and ISDNs
- Preparation of Nano-sized Nickel Metal Particles by Microwave Irradiation
- Remarkable Photosensitized Luminescence of Neodymium(III) Complexes with Halogenated 8-Quinolinol Derivatives