Essentials of EMC for Mechanical Engineers (MS070)

Synopsis(This course is upgraded from the previous course of the same title with the duration extended by one more day. You may find some content resemblance between the two courses.)

The widespread use of high-speed electronic devices and wireless communications has resulted in concern about electromagnetic interference (EMI) effects. Faster and more complex circuits are being crowded into ever smaller space, increasing the likelihood that devices operating in such systems will adversely affect one another. Modern electronic devices must therefore be able to function properly in an increasingly cluttered electromagnetic environment. Although much of the challenge is directed at electrical and electronic engineers in the design of circuits, layout and installation, mechanical engineers also play an important part in ensuring that the structures for the devices will not seriously degrade the electromagnetic compatibility (EMC) performance of these devices.

Amongst some of the challenges for mechanical engineers are the needs for an integrated design of system packaging which not only require compliance with the mechanical design considerations, but also for EMC considerations namely wires harness route and termination, selection of connectors and design of shielding enclosure to contain EMI.

In the course, participants will be given an introductory exposure to the EMC regime in the current world market. The course is thus designed to provide participants with relevant basic knowledge to achieve electromagnetic compatibility compliance for their products, complemented with practical demonstrations. This one-day overview course is valuable for all engineers and managers who work in a cross-functional product development project team.

Course Highlights

1. Hand-on demonstration on the following topics to enhance understanding of EMC design principles:

• Spectrum of a noise source
• Measurement of conducted & radiated emissions
• Transfer impedance of cables
• Application of magnetic pickup loops and current probes
• Use of ferrites for EMI control
• EM shielding and grounding
• ESD protective materials

2. Detailed discussions on shielding, grounding and bonding designs

What previous participants say about this course
Answers to the question 'what did you like most about the course'

• "Live demo on the measurement of signal from various equipments/sources" - 3 Jul 06
• "Detailed discussion on theory and prevention of EMC, especially" - 3 Jul 06
• "EMC category e.g. emission of radiated and its measurement method" - 3 Jul 06
• "Understand the potential of EMI" - 3 Jul 06
• "A comprehensive introduction" - 3 Jul 06
• "Many examples of applications related to course" - 3 Jul 06
• "Demo real like example" - 3 Jul 06
• "The section describing the Shielding Chapter provides the fundamental knowledge of shielding effectiveness - I am keen on this chapter. Indeed, the instructor is very knowledgable in his area" - 1 Dec 06

What You Will Learn

• knowledge necessary to carry out mechanical engineering design for equipment which is compatible with the electromagnetic environment and in compliance with national and international EMC regulations
• practical design aspects of EMC control in the design of electronic products
• EMC measurement techniques and compliance testing

Who Should Attend

• mechanical engineers
• electrical/electronic engineers
• reliability and standards engineers
• technical managers
• system engineers
• regulatory compliance engineers
• others who need a working knowledge of EMC principles

PrerequisiteTechnical background or working experience (electrical and/or mechanical) in the field of electrical/electronic product manufacturing, testing or development.

Course MethodologyThis course is presented classroom style, with practical demonstration to illustrate the concepts taught.

Course Duration2 days, 9am - 5pm

Course Structure1) INTRODUCTION

• EMC Examples
• EMC Definition
• EMC Scenario
• EMI Mitigation Methods
• EMC Regulations, Standards
• EMC Measurement Techniques

2) BASIC THEORIES

• Electrical Noise Characteristics
• Creation of Electromagnetic Disturbance
• Creation of Electromagnetic Interference (EMI)
• Conducted Coupling mechanisms
• Radiated Coupling mechanisms
• Basic EMC Control and Design Techniques
• Cabling & Connectors
• Filters
• Suppressors
• Isolation
• Need for RF Shielding
• Importance of Grounding

3) SHIELDING

• Shielding Mechanism
• Shielding Effectiveness
• Shielding Materials
• Seams and Joints
• Penetration - Pipes, Cables, Doors and others
• Measurement of Shielding Performance

4) GROUNDING & BONDING

• Earth and Safety Ground
• Signal and Power Ground
• Bonding Practice
• Measurement of Bonding Resistance PRACTICAL DEMONSTRATION will be carried out throughout the first three day, usually at the end of a related topic. (Approximately 5 topics will be deonstrated, depending on availability of equipment and time)
• Spectrum of a noise source
• Measurement of conducted & radiated emissions
• Transfer impedance of cables
• Application of magnetic pickup loops and current probes
• Use of ferrites for EMI control
• EM shielding and grounding
• ESD protective materials