This is a diverse and promising space. In one manifestation, spray-on inks are targeting package-level EMI shielding. Here, they hope to displace sputtering, the incumbent, which benefits from sunk CapEx and lower material consumption costs. They offer low CapEx production in atmospheric conditions and better conformal coverage. Others are developing inkjet printing solutions, … [Read more...]
Review of MIL-STD-464 Requirements
IntroductionMy reviews have covered MIL-STD-461 over the past few months so it’s time to step up to the system requirements. We realize that the MIL-STD-461 requirements apply to equipment items and subsystems as stated in MIL-STD-464. Revision “C” is the current edition, but a review is a little overdue. In this review, the discussion will focus on the various requirements … [Read more...]
Do Not Miss the EMC + SIPI 2019 Symposium!
In a few weeks, we will be able to enjoy the 2019 IEEE International Symposium on EMC, Signal and Power Integrity (EMC+SIPI). I am so excited!This symposium is sponsored by the IEEE EMC Society (EMC-S), the world's largest organization dedicated to the development and distribution of information, tools and techniques for reducing electromagnetic interference with support … [Read more...]
Review of MIL-STD-461 General Requirements
IntroductionRecently I noted that my series on MIL-STD-461 test methods was closing since I had accomplished a review on each of the test methods. It seems appropriate to continue with a review of General Requirements – those things common to the various test methods.These requirements have been around since the first release of MIL-STD-461 and MIL-STD-462 dealing with … [Read more...]
What is the Most Important EMC Design Guideline?
INTRODUCTIONEMC design guidelines have always been a popular subject in the EMC design community. What is the most important EMC design guideline, i.e. the guideline with the highest impact on the emission and immunity of electronic circuitry? Studying books and literature from renowned EMC experts often tells us that the most important EMC design guideline is: … [Read more...]
Fairview Microwave Debuts New Line of Removable Vertical Launch Connectors with VSWR as Low as 1.3:1
New Solderless Vertical Launch Connectors Provide Maximum Operating Frequency up to 50 GHz LEWISVILLE, Texas - Fairview Microwave Inc., a leading provider of on-demand RF and microwave components, has released a new series of solderless vertical launch connectors that are ideal for high-speed computing, high-speed networking and telecommunications applications. Fairview … [Read more...]
Heilind Electronics Now Stocking Amphenol Aerospace MIL-DTL-38999 Harsh Environment Connectors
Amphenol Aerospace’s MIL-DTL-38999 Series I, II and III subminiature circular connectors are widely used in both commercial and military-aerospace environments WILMINGTON, Mass. -- Heilind Electronics, a leading global distributor of electronic components and authorized distributor for Amphenol Aerospace, is now stocking the manufacturer’s MIL-DTL-38999 Series I, II and … [Read more...]
What is the Number One Item That Causes EMC Problems at the Board Level?
There are many “rules” for laying out a printed wiring board (PWB) to minimize generation of EMI from a board. These cover a wide range of issues that are important. Some more than others, but all can be important. But, if you were to ask what the number one item on the hit parade would be, what would you say? What are the important factors to consider when laying out a … [Read more...]
UNECE Regulation 10: Electrical/Electronic Sub-Assembly Radiated Emissions Testing (Annexes 7 and 8) and Radiated Immunity Testing (Annex 9)
In this installment in the series of blogs on UNECE Regulation 10, Revision 5, Amendment 1 (8 October 2016), hereafter referenced as R10.05, we will look at radiated emissions and immunity testing of Electrical/Electronic Sub-Assemblies (ESAs). ESA RADIATED EMISSIONS (Annexes 7 and 8)Like the vehicle radiated emissions testing annexes, R10.05 has separate … [Read more...]
Oh How I Hate to Commutate!
My favorite Sophomore in Engineering, Roger, and his group, made a small crane for their engineering project. It had many EMC issues. One issue they had was noise from permanent magnet DC motors. I am so glad Roger cares about this issue, because I have modeled a few permanent magnet DC motors, and I can explain how to design it so that then so they are … [Read more...]
