Interference Technology

For EMI / EMC Engineers

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Don’t Rely on the Stability of the Mains Frequency

 

My old colleague and good friend Tim Williams sent me the story below for inclusion in EMI Stories/Banana Skins, and I found it so interesting in so many ways that I decided to publish it as a Blog. In so very many EMC standards and other meetings on EMC, we hear that the stability of the AC mains power frequency is either ‘not an EMC issue’ or is ‘never a real EMC … [Read more...]

IQD Presents New Low Phase Noise Oscillators

 

One of the world’s best performing oscillators available from IQD As application requirements drive the need for greater data rates, more oscillator devices with ultra-low phase noise are required. This type of application is especially prevalent in today's connected world. Applications include fibre transceivers, gigabit Ethernet and 5G base stations. IQD is pleased to … [Read more...]

Communications & Power Industries (CPI) Acquires TMD Technologies

 

Palo Alto, CA, July 8, 2021 /PRNewswire/ -- Communications & Power Industries (CPI) has successfully completed the purchase of TMD Holdings Limited and its subsidiaries, including TMD Technologies Limited and TMD Technologies, LLC (together, TMD). Consisting of approximately 170 employees in facilities in the United Kingdom and the United States, TMD is a world-leading … [Read more...]

Würth Expands Popular Transformer Series

 

Würth Elektronik is pleased to announce the expansion of their popular MID-PPTI tiny push-pull transformer series. This series of parts can be used in a host of push-pull and pulse transformer applications and is found on dozens of reference designs. The four parts added to the MID-PPTI series include 750317828, 750317829, 750317830, and 750317331; all of which are AEC-Q200 … [Read more...]

Mains Harmonic Current Emissions are Always Bad – It is Risky to Rely on the Limits or Exclusions in the Standards

 

Many (perhaps all) of EMC standards that are listed under the EMC Directive, that set limits for mains harmonic emissions, have exclusions (‘let-outs’) for certain types of equipment, especially: (these examples are from IEC/EN 61000-3-2 Ed.5:2018) Lighting equipment with a rated power of less than but not equal to 5W Equipment with a rated power of 75W or less, e.g. … [Read more...]

Heilind Electronics Adds TE Connectivity’s 2 mm Receptacles, Breakaway and Shrouded Headers

 

WILMINGTON, Mass., May 18, 2021 -- Heilind Electronics, a leading global distributor of electronic components and authorized distributor for TE Connectivity (TE), a global leader in connectivity and sensors, expands its range of AMPMODU interconnection solutions with the manufacturer’s 2 mm receptacles, breakaway headers and shrouded headers. These new connectors occupy 38 … [Read more...]

EMC Confidence Checking

 

I was recently working with a manufacturer of stand-alone ticket machines, who had big problems with Ethernet-related emissions. Long story short – it was the Ethernet hub they had incorporated in their machine. They had assumed that all CE-marked Ethernet hubs would be equally good for EMC, and they had several different types lying around their design department. We tested … [Read more...]

Gowanda Electronics Honored by Collins Aerospace as Supplier of the Year for Electronic Components and Distribution

 

Gowanda Electronics, a designer and manufacturer of high-performance inductors and magnetic components for RF and power applications was awarded “Supplier of the Year for Electronic Components and Distribution” at the Collins Aerospace 2021 Avionics Supply Chain Recognition Event last month. Collins Aerospace, a leader in technologically advanced and intelligent solutions … [Read more...]

EMC Question for 400Hz Power System

 

Question: I would appreciate it if you could provide your view / share your expertise on the EMC/EMI protection requirements between the  400Hz Ground Power Systems and the various ICT/ELV installations within an Aircraft. Answer: An interesting and important question! And much too big an issue to be able to deal with comprehensively, in a blog post. The … [Read more...]

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