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Measurement Testing
A Resource Dedicated to Environmental Testing, EMC Testing, Vibration Testing and related areas
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Mjr
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Joined: 13 Jul 2005
Posts: 294
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 Posted: Wed Dec 21, 2005 11:28 pm Post subject: Grounding and Shielding Techniques for EMI, EMC and ESD |
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TTi is offering Grounding and Shielding Techniques for EMI, EMC and ESD (Course No. 161)
Here is a portion of the Course Outline:
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Applications In modern electronics, as component size continues to decrease and complexity to increase, electrostatic and magnetic fields and their interactions are becoming increasingly important. As problems have arisen, creative solutions have been developed. This course pulls together the latest tools and techniques for overcoming problems related to electrostatic and magnetic coupling. An understanding of the principles and recent developments in this growing field is essential to many individuals in both the commercial and military electronics industries.
For Whom Intended This course is intended for individuals whose work requires an understanding of the effects of interacting electrostatic and magnetic fields on electrical and electronic equipment. Circuit designers, electronics packaging specialists, systems engineers, and electronic test specialists will find this course helpful.
Objectives To help participants to understand grounding and shielding concepts and terminology. To provide an overview of the newest and most effective techniques for overcoming problems through the proper use of grounds and shields.
Brief Course Description The course is not an in-depth electrical engineering course but rather is aimed at individuals who require an intensive overview of basic principals, potential pitfalls and practical techniques, without the assumption of much prior knowledge of the topic.
The course is fast paced and as non-mathematical as possible. It begins with a review of electrostatic concepts, such as charges, fields and forces. It then takes up the basic theory of electrostatic and electromagnetic fields and field coupling. Armed with an understanding of the problem-causing mechanisms, students are prepared to devise solutions. The course addresses practical considerations such as cabling choices and the proper design and use of grounds. Effective grounding and shielding of amplifiers, voltmeters and enclosures will be covered. Techniques for measuring shielding effectiveness will be addressed. Electrostatic Discharge (ESD) will be covered as it relates to equipment design. |
- Course Introduction, Quiz for Evaluation of Class
- Review of Electrostatics: Charges, fields, and forces
- Electric Fields
- Capacitance definition
- Self and mutual concepts
- Screening and shielding concepts
- Electric Field Coupling
- Crosstalk
- Capacitive Coupling
- Crosstalk from Pulses
- Using Ground to Reduce Capacitance
- Electrostatic Shielding
- Voltage sources
- The Earth Plane
- Room Pickup
- Magnetic Field Coupling
- Coupling Between Lines
- Loop Area
- Mutual Inductance Between Wires
- Ground Plane and Wire Position, Orientation
- Coupling Between Inductors
- High-mu Material
- Inductors
- Mixed Coupling
- Impedance Effect on Coupling Type
- Dual Analysis
- Superposition Model
- Coupled Response
- Extended Model
- Typical Response
- Line Termination
- Cables
- Magnetic Coupling in a Loop
- Cable Types
- Large and Small Mutual Inductance
- Poor Cable Grounding
- Ground Current
- Shielding
- Termination of Shield
- Conductor Shielding
- Magnetic Shield
- Alternate Current Paths
- Shield Cutoff
- Loop Analysis
- Ground Current
- Shield Connection Methods
- High Frequency. Current Flow
- Poor Grounding
- Ferrite Choke
- Grounding
- Types of Grounds
- Electrical Safety
- Single and Multi point Signal Grounds
- Which Ground is Best
- Common Impedance Coupling
- Hybrid Signal Grounds
- Separation of Grounds
- Hardware Grounds
- Single Ground Reference
- Amplifier Shields
- Signal Input — Shield Enclosure
- Capacitance Between Shield and Ground
- Shield Connection and Grounding
- Low Frequency Grounding
- Ground Loops, Ground Loop Isolation
- Differential Amplifiers
- Induced Noise
- Isolation Amplifier
- Common-Mode Rejection
- Differential Amplifier Response to Inputs
- Guarded Voltmeter
- Guard Shields
- Grounded Measurement
- Grounded Measurement with Common-Mode Voltage Floating Measurement
- Ideal Floating Voltmeter
- Realistic Floating Voltmeter
- Guarded Voltmeter
- Connecting the Guard
- Bridge Measurement
- Connecting Guard for Bridge Measurements
- Enclosure Shielding
- Absorption Loss
- Electric and Magnetic Fields
- Low-Frequency Magnetic Fields
- Multi-Layer Shields
- Orientation
- Conductive Gaskets
- Measuring Shield Effectiveness
- Plastics
- Cabling to Shields
- Transformer Shielding
- Electrostatic Discharge
- Triboelectric Series
- Inductive Coupling
- Charge Storage
- Human Body Model
- Discharge into Ideal Ground
- Types of ESD Damage
- Common Myths About ESD
- ESD Prevention
- ESD Protection in Equipment Design
- Coupling Mechanism
- ESD Coupling in Cables
- General Applications
- Conditioning the Signal
- Types of Amplifiers
- Critical Amplifier Characteristics
- Errors
- Noise Rejection
- Shielding
- Power Supply Restriction
- Source Impedance
- Bridge Circuit
- Calibration
- Amplifier Source Compatibility
- Characteristics, Types of Amplifiers
- Amplifier Compatibility
- Pieozelectric Transducers
- Charge Amplifiers
- Filtering
- Amplifier Limiting
- Summary
- Final Exam
- Certificates for Successful Completion
For more information, visit:
http://www.ttiedu.com/ |
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