From the International Electrotechnical Commission webstore: "IEC 60358-3:2013 applies to AC or DC single-phase coupling capacitor, with rated voltage higher than 1,000 V, connected line to ground with the low voltage terminal either permanently earthed or connected to a tuning device for harmonic-filters applications. It replaces Clause 1 of IEC 60358-1:2012." … [Read more...]
Power Grid, Mains Filtering and Power Line Communications… A Root Cause for Incompatibilities?
This article has been translated from Dutch to English. It can be found in its original language in the 2014 Europe EMC Guide. Mart Coenen, Owner, EMCMCC, the Netherlands The power grid is intentionally meant to distribute electrical energy at the mains frequency, as produced by the electricity generating plants, towards the end-users. The three-phase low-voltage distribution … [Read more...]
Practical EMC Filter Design and Optimization
NOTE: This article has been translated from German into English. It can be found in its original language in the 2014 EMC Europe Guide. Tobias Hofer EMC Consultant HSI Elektonik AG Switching power supplies can be found in nearly all electronic devices. The efficiency should be as high as possible. The no load condition should be in the milliwatt range. In contrast to that, … [Read more...]
Micro DC-DC Converter Series with Embedded Power Inductor and Ferrite Substrate Technology
Electronic component manufacturer Murata Americas today announced the expansion of its LXDC line, a micro DC-DC converter series that utilizes a unique ferrite substrate to embed the power inductor. Ideally suited for applications that require a miniaturized footprint, the new 55F and 55K additions to the LXDC product line deliver ultra-compact size and superior EMI noise … [Read more...]
Common-Mode Chokes for Automotive Ethernet Offer Improved Noise Suppression
Magnetics materials provider TDK Corporation has released a new series of common-mode chokes for automotive Ethernet. Measuring in with a footprint of 4.5 mm x 3.2 mm and an insertion height of just 2.8 mm, the miniaturized ACT45L series is the world’s smallest common-mode choke for automotive Ethernet and fulfills the standard’s stiffest requirements. The new ACT45L series is … [Read more...]
Stamped Spring Pin Socket for Electronic Filter Testing
Ironwood Electronics, a provider of high performance test sockets and adapters for both engineering and production use, has released the CBT-QFN-7033, a new stamped spring pin socket addressing high performance requirements for testing DFN6 electronic filters. “To test electronic filters, a high performance contact is needed,” the company said. “The contactor used in … [Read more...]
New Type of Filter May Help Bring Order to Crowded Radio Spectrum
Scientists from the Netherlands have developed a new type of filter based on micromechanical resonators they say is ideal for maintaining order amidst the expected future growth of frequency standards. According to researchers at the MESA+ Institute for Nanotechnology at the University of Twente, the new solution consists of two mechanical resonators that vibrate at an … [Read more...]
New Ferrites for Power and Signal Cables
EMI shielding technology manufacturer Leader Tech has released new CE83 material ferrites for both internal and external power and signal cables. Available in solid and split core variations, the new highly optimized wideband EMI/RFI ferrites feature a target frequency range of 10 MHz to 1 GHz with peak impedance at 300 MHz. … [Read more...]
Active EMI/EMC Filters Provide High Levels of Attenuation in Small Package
Electronics distributor Digi-Key is now offering Vicor Corporation’s compact QPx series of active EMI/EMC filters. The new components provide high levels of attenuation in a fraction of the size of traditional solutions. The Picor QuietPower QPO output ripple attenuator uses proprietary active filtering to reduce power supply output ripple and noise (PARD) over 30 dB from 1 … [Read more...]
New Band-Pass Filters with Center Frequencies from 1.4MHz to 200MHz
IQD Frequency Products has introduced the new IQXF-1000 series, a range of band-pass filters with center frequencies from 1.4MHz to 200MHz based around fundamental and third overtone mode crystals. The new two to 12 pole crystal filters can operate over a temperature range of –55 to +85 degrees C with a bandwidth @3dB from ±2kHz and with the passband ripple as low as 0.5dB and … [Read more...]
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