A new method to suppress micro-surge, an over-voltage noise that occurs instantaneously caused by inverter switching signals, has been developed by OKI Electric Cable of Kanagawa, Japan, and Tokyo Metropolitan University. A patent is pending on the method that employs a surge suppression cable and a newly developed energy regeneration module. These new technologies enabled the … [Read more...]
Crystal Etalon Filter: Selection of Wavelength Temperature Coefficient
Kyocera Corporation has developed a crystal etalon filter, a component in optical telecommunications systems for large-volume data transmission, that prevents dense wavelengths of light from interfering with each other by sensing deviations between multiple wavelengths, the company announced at CEATEC Japan 2009.This is the industry's first crystal etalon filter that allows … [Read more...]
Company Acquires Specialty EMC Filter Connector Provider
Carlisle Companies Incorporated recently acquired Jerrik, Inc., which designs and manufactures military and aerospace filter connectors. With annual sales of approximately $20 million, Jerrik’s cproducts are used in environments where reduction of electromagnetic interference and transient voltage suppression are critical. Jerrik has earned key positions on commercial aerospace … [Read more...]
Company Showcases EMC, ESD Protection Solutions
California Micro Devices has showcased its broad range of protection solutions, including devices for electrostatic discharge (ESD) protection and electromagnetic interference (EMI) filtering at the Embebbed Systems Conference held September 22-23 in Boston. The Praetorian III EMI Filters, for example, integrate spiral inductors with capacitors and ESD protection diodes in a … [Read more...]
Shielded Window Material Takes New Approach
Chomerics Europe, a division of Parker Hannifin, has introduced Winshield C, a shielded window display material. Winshield C is a cast monomer material that combines good physical properties with electromagnetic shielding performance and optical clarity. Applications include display filtering in test equipment, medical instrumentation, public information displays and military … [Read more...]
New Filter Ensures Peak Voltage under 1000V
The Spanish EMC filter manufacturer Premo has developed a dv/dt output filter, the FOVT series, to ensure that the maximum peak voltage will be under 1000V with a dv/dt value less than 500V/us. The filer has a three-phase output filter for converters, minimizes frequency-converter dV/dt values, reduces motor heating and increases motor life.Learn more at the Premo Web site. … [Read more...]
Water-Resistant Surge Suppressor
Compared to conventional filters for 15kW-motors, the new “eco Surge U” developed by OKI Electric Cable in Kanagawa, Japan, is smaller and lighter (one-fifth the weight and one-fourth the size) and can be used from 0.2kW up to 75kW motors. The ultra-small surge suppressor is based on transmission line theory. With its original water-resistant sealed enclosure, the “eco Surge U” … [Read more...]
New Filtered Micro D-Sub Connectors
A new line of smaller, lightweight EMI-filtered Micro D-Subminiature Connectors has been introduced by Spectrum Advanced Specialty Products. Micro D-sub connectors are designed and built to MIL-DTL-83513 and available fully RoHS compliant. The compact footprint of the micro D-sub addresses a range of medical, industrial and aerospace applications where space is limited and EMI … [Read more...]
Radial Leaded Inductors Deliver EMI Protection
The new Model DR217 Series Radial Leaded Inductors from Datatronic Distribution, Inc., provide protection against challenging EMI/RFI problems in current handling applications up to 8.4 Amps. The ROHS-compliant DR217 Radial Leaded Inductor series is designed for EMI filters and switching power supplies.Learn more at Datatronic’s Web site. … [Read more...]
LED Driver Said to Reduce Cost of EMI Filter Components
A common EMI challenge in automotive applications is avoiding interference of an electronic circuit with the AM radio. Maxim Integrated Products says its new MAX16814 allows users to program the switching frequency from 200kHz to 2MHz, thus enabling operation above the AM radio band. In addition, its oscillator-synchronization feature minimizes EMI noise when multiple MAX16814s … [Read more...]
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