Everyone
Our third event of 2008 is taking place on 14 and 15 October, see details below. We will have EMC-related demonstrations between 09:30 and 13:30 on each day. There is no need to register separately for the IEEE demonstrations. Best wishes Brian Brian Jones United Kingdom and Republic of Ireland EMC Chapter Chairman IEEE Electromagnetic Compatibility Society UKRI Chapter. You are invited to attend the forthcoming Chapter Experiment Demonstration session on Tuesday 14th and Wednesday 15th October 2008 at: EMCUK2008 Newbury Racecourse, http://www.emcuk.co.uk/ Register now at the above website for your Free Visitor Ticket. Experiment Demonstrations and Computer Solution Demonstrations The practical hardware presentations are intended to demonstrate EMC concepts and principles, phenomena, effects, and measurement methods. The computer solutions presentations are intended to illustrate EMC modelling approaches and simulation methods through a series of interactive computer demonstrations. The presentations are table-top informal practical demonstrations that are similar to poster sessions, they are presented simultaneously and repeated continuously. This year’s agenda will include new demonstrations plus popular ones from previous years. Location: Marquee annex on ground floor. Session time: 09:30 - 13:30. There will be five demonstrations each day and content will include: Tuesday 14th October 2008. Static electricity and Real ESD sources. Jeremy Smallwood, Electrostatic Solutions. Dr Jeremy Smallwood demonstrates how static electricity gives rise to ESD from people and objects in the real world, and shows some of the waveforms and characteristics of the ESD from these sources. Live demonstration of Filter Topologies. Lorandt Foelkel & Neil Palmer, Wurth. The demonstration simulates a noisy signal and shows the effects of various types of filter topologies on cleaning up the signal. This enables engineers to see the effects of each topology and a more professional approach to EMI filter circuit design. A signal is provided by a USB cable and a noise source is added to simulate Electro Magnetic Interference on the USB cable. This signal is then fed through a reference line to show the signal in its unfiltered state. The signal is then fed through various filter circuits on an SMD test board to show how the different filters can be used to achieve different levels of attenuation. These can be seen in real-time on an impedance analyzer. The demonstration also show how Linear Technologies SwitcherCAD III software can be used to accurately model each filter to enable a realistic simulation of filter circuits prior to fabricating a PCB. This can help to fine tune the filter for each specific design without the need for board re-spins. Measuring transfer impedance to IEC 62153-4-6:2006/EN 50289-1-6:2002. David Welsh, York EMC Services. The demonstration will cover measurement of cable transfer impedance using a line injection jig. Computational Modelling for EMC. Paul Duxbury, CST-UK. The last few years have seen a significant development in and maturing of EMC modelling software, such that it is now being seen by many organisations as a vital part of the electronics design process. This demonstration session will overview a range of different applications and uses for electromagnetic modelling software in the design process. Analyzing current paths and magnetic fields. Roy Ediss, Ediss Electric. The demonstration reviews a sensing method and then focuses on its application using various probes and a range of test pieces, in order to identify associated current paths and magnetic field properties. Current paths and field effects will be shown on PCB track arrangements, a "real" circuit, a coaxial transmission line, twisted pair transmission line, a crosstalk demonstrator PCB, etc. Video presentations of: EMC Aspects of Magnetic Field Coupling of Current Loops. Jasper Goedbloed. ESD and EMI in Printed Wiring Boards". Douglas Smith. Effects of Pulse Rise/Fall Time on Signal Spectra". Clayton Paul. Wednesday 15th October 2008. Live demonstration of Filter Topologies. Lorandt Foelkel & Neil Palmer, Wurth. The demonstration simulates a noisy signal and shows the effects of various types of filter topologies on cleaning up the signal. This enables engineers to see the effects of each topology and a more professional approach to EMI filter circuit design. A signal is provided by a USB cable and a noise source is added to simulate Electro Magnetic Interference on the USB cable. This signal is then fed through a reference line to show the signal in its unfiltered state. The signal is then fed through various filter circuits on an SMD test board to show how the different filters can be used to achieve different levels of attenuation. These can be seen in real-time on an impedance analyzer. The demonstration also show how Linear Technologies SwitcherCAD III software can be used to accurately model each filter to enable a realistic simulation of filter circuits prior to fabricating a PCB. This can help to fine tune the filter for each specific design without the need for board re-spins. Shielding Effectiveness measurement demonstration. Dave Cullen, York EMC Services. The demo will show the difference in shielding performance with gasketed/non gasketed joints, holes and slots, penetration/non penetration with cables. ESD immunity of an analogue and a digital circuit. Roy Ediss, Ediss Electric. Immunity of analogue and digital circuits to a close proximity indirect air electrostatic discharge is demonstrated. It will be shown how digital circuits that are not immune to electromagnetic fields will lock-up and stop working but analogue circuits can recover. Insertion loss demonstration for Varistor EMI Filters. Matthew Ellis, Syfer Technology. A panel mount feedthrough Varistor EMI Filter provides both voltage transient clamping and also EMI filtering, in one device. The heart of the filter is a multilayer varistor (MOV) discoidal, which provides voltage clamping in much the same way as a varistor chip. However, due to it's discoidal construction, and the inherent capacitance, it provides EMI filtering similar to a conventional EMI filter, up to at least 1GHz. The demonstration will compare the EMI filtering performance of a Varistor filter compared to a conventional EMI filter. Conducted and radiated emissions of in-house PLT modems. Fraser Robertson and John Newbury, The Open University Power Systems Communications Research Group. Video presentations of: EMC Aspects of Magnetic Field Coupling of Current Loops. Jasper Goedbloed. ESD and EMI in Printed Wiring Boards". Douglas Smith. Effects of Pulse Rise/Fall Time on Signal Spectra". Clayton Paul. Roy Ediss [email protected] <mailto:[email protected]> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
