High Frequency Measurements Site Index

Time 2020-09-28 05:02:53

Web Name: High Frequency Measurements Site Index

WebSite: http://emcesd.com

ID:62407

Keywords:

Frequency,High,Measurements,HighFrequencyMeasurements,electroniccircuits,EMC,ESD

Description:

High Frequency Measurements Site IndexD. C. Smith Consultants Welcome to my High Frequency Measurements Webpage. Below you will find links to interesting technical goodies for download,as well as other interesting websites, information on my seminars, andmuch more. I will be adding to this site weekly, so check back occasionally.Feel free to print out pages on this site and to give them to others, butI ask you to include the complete page with header. Check out the monthlyTechnical Tidbit article linked at the bottom of this page. Each one willillustrate a design or measurement principle, sometimes whatto do. HF News is back! If you want to subscribe just send me an email at doug@dsmith.orgwith "HFNews" as the subject line. There is a link in each issue tounsubscribe if you want to, but you won't! Each issue contains usefultechnical discussion and links to explore and is short and to thepoint, like my Technical Tidbits below, so as not waste your time. Eachissue can be read in two or three minutes. Your email address will bekept private and never be given or sold to anyone.Here is a link to the January 30, 2017 issue: ESD Issues . Subsequent issues will be archived further down this page. You may also enjoy my Twitter feed. Just go to http://twitter.comand follow me at @dougcsmith_ee . I usually post short items such asinteresting technical links once or twice per day. Design and Troubleshooting Tips and Techniques:You will find many tips on design and troubleshooting on this site, yet whatyou see is just the "tip of the iceberg" compared to what is available inmy on-site private seminars. The seminars cover many effective design and troubleshooting techniques developed by myself and not taught anywhere else! Click here to request more information via email. Quote from a visitor to this site: "Every time I browse your site, I never get any work done. I spend hours on it and get in trouble." for a technical seminar, design review/troubleshooting, or just for avisit and mix a little history of the Old West with your work!NASA-Ames Research Center: RMV Technology GroupBldg. 19, Suite 1073, M/S 19-46CMoffett Field, CA 94035http://esdrmv.comPhone: (650) 964-4792----------RMV is a materials/ESD lab serving NASA and commercial customers. Courses at the University of Oxford by Doug Smith University of Oxford Tutor - Department for Continuing Education Lab Techniques, Robust Design, and Troubleshooting Click here for the virtual class at much lower cost (~$35/hour) on September 14-17, 2020 (four half days)On-site version will resume later in the fall of 2020. Information below applies to the on-site version,click here for the upcoming web classWe had a blast at the August presentation of this class, join us for the September presentation to see why! Why come to this class? Why come to Boulder City? click here This seminar is fun and covers material not covered in any other seminar by others.It is much broader than just EMC/ESD issues, covering my research over many decades. (also known as High Frequency Measurements and Noise in Electronic Circuits) Click here for more information, including cancellation policy.This seminar is limited to 6-8 people to insure the best experience! Click here to see a walk through of the facilities in Boulder City, NVNow included: Amazon Fire tablet computer with the course notes installed. Three days, one instructor coveringgreat techniques to get your design working and finding defects thatcould become field failures. In addition, unique and powerful methodsof troubleshooting EMC and ESD problems in minutes to hours instead ofdays to weeks or more are presented. Lots of demos on live circuitsillustrate most of the main points covered. People have said this wasthe best course they have ever taken! Click here for more information. Low cost, and some travel expenses included. seminar includes many design and troubleshooting techniques from myresearch that have saved my clients millions of dollars and are onlyavailable at this seminar. No other event, symposia, seminar, orwebinar covers these privately developed techniques. NEW: A signifiant improvement tomy pulsed injection method of finding design flasw quickly will also bepresented at this seminar. The Lab, Design, and Troubleshooting seminaris my three day seminar on design, lab techniques, andtroubleshooting which includes about 1/2 day on EMC in designs, ESD indesigns, and troubleshooting and measurement techniques in the designlab. I started this seminar years ago and constantly add and update it.A number of people have said to me that it is the best course onany topic they and eveqr taken. Almost 50% of time is devoted todemonstrations. This year I have added a new section on exposing lowprobability failure modes that can present safety or other problemsthat can be a field disaster. There is content on my unique EMC/ESDtroubleshooting techniques, but in addition, there is a lot of contenton just getting the design to work in the first place or totroubleshoot it later on. Cost includes 4 hotel nights, 2 meals/day, and an Amazon Fire tablet computer with the course notes installed. Everything is covered upon arriving in Boulder City, NV exceptdinner each night. You only need a cheap airfare to get here. This class is held in the Boulder Dam Hotel, a restoredNational Landmark Building that hosted the dignitaries who came tovisit Hoover Dam during its construction. To visit the Boulder DamHotel website, click here. Boulder City, NV is a small, quiet town thatonce was home to the workers that built Hoover Dam. There is plenty tosee within a few blocks of the seminar venue shown in the picturebelow. It is located about 6 miles from Hoover Dam and about 22 milesfrom Las Vegas. Boulder City is the opposite of Las Vegas, but theglamor of Las Vegas is not too far away if you want to go there. Ioften say that being in Boulder City is like living in the 1950s butwith very high speed Internet. Follow the links below for moreinformation.s Click here,to see descriptions and registration information on my one hourwebinars than can solve difficult design problems quickly. Touching ontopics like signal integrity, EMC, ESD, and general analog and digitaldesign, these webinars are a quick way to get your design working.There are public presentations most weeks as well as privatepresentations on demand with a new simplified, lower cost price structure. New webinars areadded periodically. Wireless Charging and Power Transfer - Problems and Solutions Friday, June 14th, 2019 at 10 a.m. PDT (US)Wireless charging has several problems including noise injection intothe system structure that can lead to EMC issues. Many such devices getpast EMC testing by limiting the way EMC testing is done to benigncases. This webinar will demonstrate the problems and possiblesolutions in a live lab environment as opposed to just showing slides.Target is for a one hour presentation but the length may vary dependingon audience participation and may go longer. The cost is lower than most webinars at $100/person capped at $500 perlocation, so that even individuals can afford to attend that will notbe reimbursed by their employer. If you have several people that canattend, the cost becomes very low per person. Private delivery for a group is $500. Please call/text/or email me before registering to make sure there is a spot for you. Cell: +1-408-858-4528, doug@dsmith.org HF News newsletterTo get the latest issue delivered to your inbox, send me an email with "Subscribe to HF News" in the subject line.You can find lots of audio and video podcasts on various topics oftechnical interests. Most of them are from a few years ago and were onmy paid website emcesd-p.com but are still current and useful, and nowfree. I will be adding podcasts regularly in the future. This has beenmade possible by the continuing decline in costs of bandwidth. Click here to go to my podcast page or go directly to my papers, articles, and Technical Tidbits on this site! Check out one of my non-technical adventures, the Devil Dash, a footrace combined with an obstacle course (barbed wire, mud, rough terrain, etc.). Click hereto see the story. The event took place in Bootleg Canyon, here inBoulder City, NV March 23, 2013, on a much colder than normal day.Ifinished faster than 90% those entered, who on average were less thanhalf my age (67), including finishing faster than 82% of the 20-25 yearold group! My latestTechnical Tidbit appears at the bottom of this page. Click here to go to the bottom of this page for the article (but you will miss more than 250 papers and articles in-between). Have a tough design problem? Designproblems can be very costly. Even if caught in the lab, precious resourcescan be wasted tracking such problems down. My private seminars cover designand troubleshooting techniques I developed that are not taught by anyoneelse! These techniques have solved tough problems in a day or two after designteams had struggled with the problems for weeks or months, not to mentionavoiding the problems in the first place. Click here to request more information. Design troubleshooting and verification: Tracking down design problems in the lab can be time consuming. My public seminars and my private on-site seminars include new informationto minimize debug time. The difference can be hours to a solution insteadof weeks! Click here to hear a 1 minute, ~128K, audio clip discussing the seminar. Computer Simulation of ESD and Lightning Events (~1.2MB)(recent addition!) (1986 EOS/ESD Symposium Paper) (June 2002 white paper written for Shieldingfor Electronics, Sunnyvale, CA) (~373K)Technical Tidbits (archived, current article is at bottom of this page) (Current Probes, More Useful Than You Think - Part 3) February 2008, Using Resonant Frequency Measurements to Extract Circuit Parameters(Calculating the Capacitance of a BNC Barrel Adapter) March 2008, Measuring and Interpreting the Relative Phase of Common Mode Currents(an EMC emissions troubleshooting technique) April 2008, Measuring Structural Resonances - Part 2, Printed Wiring Board Traces(A Simple Technique for Determining the Resonant Frequencies of a PWB Trace) May 2008, The Square Shielded Loop - Part 1(Construction details) June 2008, The Square Shielded Loop - Part 2, Parasitic Coupling(Electric Field Shielding of Magnetic Loops is Not Always Effective!) July 2008, The Square Shielded Loop - Part 3, Parasitic Coupling Between Unshielded Wire Loops August 2008, The Square Shielded Loop - Part 4, Coupling to a PCB(From Shielded and Unshielded Magnetic Loops)(From Shielded and Unshielded Magnetic Loops) October 2008, Minimizing ESD Events Involving Electronic Equipment(Using Static Dissipative Materials in Equipment Design(An unusual use for a comb generator)September 2009, Using a Two AA Cell USB Charger to Power a Comb Generator(A Handy Power Source for Any USB Powered Device)October 2009, Using a Comb Generator to Demonstrate Impairment of the Shielding Effectiveness of a Coaxial Cable(A Useful Demonstration Technique When a Tracking Generator is not Available)November 2009, Using a Comb Generator With a Pair of Current Probes to Measure Cable Resonance(A Useful Technique When a Tracking Generator is not Available)December 2009, Analysis of theIEEE Std 802.3 -2002 Cable Clamp(It May Not Be a Good Idea To Use It For 10 Gigabit Ethernet Testing!)January 2010, Using Current Probes to Inject Pulses for Troubleshooting (Board Resonances) - Part 3(Current Probes, More Useful Than You Think - Part 4)February 2010, Damping Board Resonances Using Discrete ResistorsMarch 2010, Damping Board Resonances Using Discrete Resistors - Part 2(Frequency Domain Measurements)April 2010, Identifying Switching Power Supply Noise in Systems(Frequency Domain Measurements)May 2010, A Travel Tip for Engineers and Technicians June 2010, Routing Signals Between PCB Layers - Part Three, Interplane Voltage(Frequency Domain Measurement) July 2010, Routing Signals Between PCB Layers - Part Four, Interplane Voltage(Time Domain Measurement) August 2010, Construction of a Coaxial Antenna for Troubleshooting - Part 2, Practical Implementation September 2010, In ESD Testing, Necessity is the Mother of Invention(Powering an ESD Simulator From AA Batteries) October 2010, Measurement and Evaluation of SATA Cables Novermber 2010, Comparison of Current Waveforms from 150 Ohm and 330 Ohm Networks in an IEC 61000-4-2 Simulator December 2010, Comparing "IEC 61000-4-2 Compliant" ESD Simulators January 2011, Using Averaging to Cleanup Scope Waveforms February 2011, Using High Frequency Current Measurements to Find Secondary ESD in Equipment March 2011, Using High Frequency Measurement of ESD Current to Find Problems with an ESD Simulator April 2011, Variability of Air Discharge ESD Current Waveforms(Using high frequency measurements to explain one of many reasons why ESD testing seems to be unrepeatable) May 2011, Constructing a Shield for an IC Package to Troubleshoot Circuit Problems(Especially for ESD and EMC Problems) June 2011, Useful Toolkit for Troubleshooting and Characterizing Circuits July 2011, Measuring ESD Stress on a PCB(When Conventional Measurements Don't Work) August 2011, Power Over Ethernet Injectors Can Affect Ethernet Radiated Emissions(High Frequency Measurement of 1000Base-T Ethernet Common Mode Currents) September 2011, PCB-Chassis Ground Connections - Avoiding Pitfalls Due to Unintended System Resonances October 2011, Electromagnetic Interference (EMI) Effects on Measurement Equipment(ESD Effects on Oscilloscopes) November 2011, Construction of a Tool for Removing Static Charges During ESD Testing(A New Use for a Ballpoint Pen) December 2011, Measuring the Resonant Frequencies of Heat Sink Tines(Your heat sink can be the source of high frequency EMC emissions!) January 2012, Measuring Common Mode Currents to Troubleshoot EMC Problems February 2012, The Melted BNC Adapter March 2012, Air Discharge ESD Current Waveforms Revisited(High frequency ESD current measurements on system cables) April 2012, Single Point Grounding - Not Achievable at High Frequencies(greater than a few MHz) May-June 2012, Destroying Electronic Components from Across the Room With ESD(Today's sensitive components are really sensitive!) July 2012, Measuring Breakdown Voltage With an ESD Simulator(Special simulator characteristics are needed) August 2012, Novel Equivalent Circuit for Zin of an Arbitrarily Terminated Transmission Line(Written by Timothy J. Maloney) September 2012, Measuring Breakdown Voltage and Charging Objects With an ESD Simulator - Part 2(A method that works with most ESD simulators) October/November 2012, A Collection of Published Papers and Technical Tidbits on ESD Design and Troubleshooting December 2012, A Collection of Published Papers and Technical Tidbits on EMC Design and Troubleshooting February 2013, LVDS, Be Careful of EMI Induced Signal Corruption April 2013, Human Metal vs. Human Body ESD(Metal in a Human Hand significantly increases ESD intensity) June 2013, A Collection of Measurements of ESD Types(With a short paper by Geoff Weil) July 2013, Human Metal ESD Characteristics, Size of Metal Object(Intensity of ESD from a metal object in a human hand is not significantly affected by size of the metal object) September 2013, Parasitic Resonance in an ~10 MHz RFID Antenna - Measurement and Characterization November 2013, Analog Designer's Notebook Part 1 - Improving Op Amp RF Immunity January 2014, Analog Designer's Notebook Part 2 - The Importance of Good Power Bypassing March-April 2014, Troubleshooting Radiated and Conducted Immunity Problems in the Development Lab June 2014, Radiated Emissions Can be Strongly Affected by Setup, A Problem for Testing Standards(An Example Using a Class D Stereo Audio Amplifier) August 2014, Radiated Emissions can be Strongly Affected by Driving Signals, A Problem for Emissions Testing(An Example using a Class D Stereo Audio Amplifier) September 2014, Human Metal Model ESD Compared to Direct Skin Discharge (Human Body Model) ESD(Revisited in Video Format) October 2014, Direct RF Injection for Circuit Debugging(A Video Presentation) December 2014, EMC and Other Test Lab Errors June 2015, ESD and EFT Internally Regenerated by Power Supplies October 2015, Techniques for Investigating the Effects of ESD on Electronic Equipment June 2016, Measuring Current of a High Voltage Discharge February 2019, A Useful E-Field Near Field Probe for TroubleshootingThe links listed here are Adobe Acrobat (pdf) files containingthe visuals of recent talks and presentations I have given to various groups.You will need Acrobat Reader V4.0 or better to read the filesas well as a password. If you have attended one of these presentations,then you already have the password, if not and you would like to view thefile, click hereto request the password. Keep in mind that the visuals only cover about50% or less of my presentations. Live demonstrations and discussion ofpast experiences make up most of these talks.Predicting Field Failure from Small Enviornmental StressesAbstract: This Technical Tidbitcovers how small environmental stresses can cause circuit failures ifrepeated thousands of times. Such events are very frequent in the fieldand can cause equipment failure. A case example is described. This is areprint of a paper I published at DesignCon in January of 2019. Interested in more information on this and related topics? Clickhere for a schedule of upcoming design and measurement seminars. Top of Page

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