Design for EMC Training Course

Dates: 17th- 19th May 2011 & 13th - 15th SeptemberCost: £690 Booking fee for 17th - 19th May and £690 (If you book  09/08/2011 for the September course) or £750 after.Time: 9am - 5pm, 3 day courseLocation: Octagon House, Fareham, Hampshire P015 5RL

Description

This course will cover design to meet the compliance requirements of the European EMC Directive, as well as other commercial and military requirements. Good EMC design gives you a product that is more reliable and better fitted for its environment. The course is structured to achieve the maximum learning potential from a combination of tutorial and case study exercises. It emphasises the underlying physics of interference generation and coupling and how it affects design methods, without resorting to complex mathematics.

 

Who should attend

Electronic product designers and design managers: a basic knowledge of electronics is assumed. The course will be of particular interest to design engineers in industrial, medical, transport, telecomms, IT, consumer, marine and military sectors who have to meet EMC requirements as part of their project specification. It will help them deal with the technical and compliance aspects of EMC, as well as avoiding EMC-related design mistakes that disrupt project timescales and budgets.

Programme

Day 1 – introduction and theory

• Introduction to EMC; IEC, EN and MIL test standards
• Why EMC? – the definition of EMC – the various phenomena – the product life cycle and reliability aspects – the EMC and R&TTE Directives – other Directives – military and aerospace requirements
• The standards regime – standards generating bodies – military/aerospace versus commercial – content of the most common test standards
• Principles of interference coupling
• Using the dB – frequency versus time domain – coupling modes – electric, magnetic and electromagnetic fields – transmission lines – general emissions and immunity control
• System partitioning and grounding
• System partitioning – ground as a current return path – control of loop area – current flow in a ground plane and a shield surface – the effect of slots and apertures – conductor impedance and bonding – partitioning the circuit from the interface
• Case study: current paths in ESD and EFT events

Day 2 – Mechanical, PCB and cables

• PCB layout
• Grounding and track impedance – proximity of return path – gridded and ground plane layouts – the optimum ground plane – on-board shielding – interface layout and grounding – layer stack-up
• Cables and connectors
• Mode of propagation – unscreened cables: twisted pair, ribbon – cable balance and LCL – screened cables: screen operation, transfer impedance – the effect of the connector – cable installation
• Shielding
•  Theory of reflection and absorption – effect of apertures and seams – conductive gaskets – conductive coatings and shielded windows – partitioning shielded enclosures – using the shield as ground – cable layout and large enclosures
• Exercise and case study – mechanical, PCB and cable design review

Day 3 – Electronics

• Digital and analogue circuit design
• Emissions from digital circuits: clocks, transmission line ringing, decoupling, using single chip micros, using complex microprocessors – emissions from analogue circuits: unanticipated oscillations, video signals – logic circuit immunity: timing and logic threshold constraints, transient susceptibility, defensive programming – analogue circuit immunity: bandwidth, linearity and dynamic range, balance, isolation
•  Power switching circuits
• Emissions from switching circuits – coupling paths – differential and common mode conducted – radiated – construction techniques: screens, transformers
• Filtering and suppression
• Filter configuration and layout – component imperfections – ferrites on cables and within the circuit – I/O filtering – mains filtering – transient and motor suppression
• Exercise and case study: electronic product design review
•  Wrap up and final discussion.

For further information or to book a place on one of our open courses, please contact Sandie Peacock, speacock@tuvps.co.uk.

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