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Interference Technology

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Are X2Y Capacitors as Effective as Advertised? Are they Easy to Design Around?

 

Editor’s note: This question was asked in response to Interference Technology’s recent webinar by Keith Armstrong. To view the webinar, click here. Question: Are X2Y capacitors  as effective as advertised? Are they easy to design around? Answer: Well, like Questions 6 and 7 above, this question isn’t related to the subject of my webinar, but I still have some time left to … [Read more...]

Measurement of Passive Intermodulation in Filters

 

“IEC 62037-5:2013(E) defines test fixtures and procedures recommended for measuring levels of passive intermodulation generated by filters [that are] typically used in wireless communication systems. The purpose is to define qualification and acceptance test methods for filters for use in low intermodulation (low IM) applications.” Learn more. … [Read more...]

New High-Current Model for DC Filter Series

 

Schurter, a manufacturer of fuses, connectors, circuit breakers and EMC products, has announced the expansion of its FMER series of high-current filters with the addition of a model designed for high power. The company also plans to offer the entire FMER series without Y capacitors. The FMER series of filers have UL approvals for ambient temperatures of 55°C and 75°C as well … [Read more...]

Bandpass Interference Filters for Life Science Instrumentation

 

Optical components supplier Edmund Optics has released new Techspec hard-coated 25nm bandpass interference filters for use in machine vision and life science applications. According to Edmund Optics, the new bandpass interference filters are ideal for “[eliminating] unwanted background noise while simultaneously enhancing the signal-to-noise ratio in imaging or machine vision … [Read more...]

IEC Power Entry Modules for Snap-In Mounting

 

Schaffner has released new FN 9264S IEC power entry modules with a 2-pole power switch version for snap-in mounting. According to the company, the standard version can be used for a panel thickness from 1.0 to 2.5 mm and features “very good damping characteristics and an outstanding performance/size ratio.” The FN 9264S series EMC/EMI filters are designed for a maximum … [Read more...]

UK 4G Mobile Network to Debut Despite Interference With Television Signals

 

The United Kingdom has begun the process of implementing the new “Everything Everywhere” nationwide 4G network despite concerns about its interference with digital TV provider Freeview. The new 4G mobile services will occupy the 800 MHz spectrum band alongside the 700MHz spectrum band occupied by Freeview. Experts theorize that approximately 2.3 million homes are expected to … [Read more...]

New Filters Prevent Interference Between VHF and TETRA Radios

 

Procom, a supplier of antennas, filters and combiner equipment, has released two new filters designed to prevent interference between VHF and TETRA radios. According to the company, the LP 170-FMA is a low-pass filter with a passband of 0-174 MHz and a stopband of 380-1000 MHz. When inserted into the VHF radio antenna cable, the filter protects the TETRA radio from interfering … [Read more...]

Integrated Circuits for EMI Reduction of Clock Dependent Signals

 

ON Semiconductor, a supplier of silicon solutions for energy efficient electronics has introduced a new series of active spread spectrum clock generator integrated circuits (ICs) to manage electromagnetic interference (EMI) and radio frequency interference (RFI) and deliver “system-wide EMI reduction of all clock dependent signals.” According to Ryan Cameron, vice president of … [Read more...]

Practical Reasons for Shifting to the Application of Dielectric-Independent EMI Filters with Integral Surge Protection in Product Designs

 

Philip F. Keebler, D. Michael Evans and Nathan A. Reid KCE Engineering, LLC Knoxville, Tennessee 37918 Introduction The protection of equipment from threatening electrical disturbances that occur on the power grid and inside customer facilities and the protection of equipment from conducted disturbances (i.e., emissions) are critical to the life and operation of any electronic … [Read more...]

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