The KES7000 conductive immunity test system for automotive electronics from Kikusui complies with ISO 7637-2, which is one of the EMC test standards for automotive electronics. The system includes the KES7700 series transient immunity tester and the KES7400 series supply voltage variations tester. The KES7100 dedicated application software system enables KES7700 series and … [Read more...]
Stand-Alone LIN Offers Better EMC Performance in Automotive Applications
The NCV7321 is a stand-alone local interconnect network (LIN) transceiver from ON Semiconductor that targets demanding automotive applications. This low-power, mixed signal device is a replacement for the AMIS-30600 single-wire LIN transceiver and offers superior EMC and ESD performance as compared to that earlier product. The LINv2.1 and J2602-compliant NCV7321has the same … [Read more...]
EMC-Compliant Driver ICs Target Innovative Under-Hood Applications
The ATA6833 and ATA6834 from Atmel Corporation are highly-integrated driver ICs for brushless DC motor applications such as fuel pumps, turbo chargers, or exhaust gas recirculation—applications that are continuously operated and therefore require maximum reliability. These new devices can also be used for premium class convenience electronics such as power window or seat … [Read more...]
Lab Offers Three-Day Turnaround for Calibration Services
Intertek Laboratories offer A2LA-accredited calibration services for a wide variety of EMC test equipment including: antennas, attenuators, coupling/decoupling networks, EFT generators, LISNs, RF pre-amplifiers, surge generators, and voltage probes. These labs offer turnaround time of as little as four days, and same-day calibration services are offered for an additional … [Read more...]
Combination EMI Filter/Transient Protection Module Meets U.S. & European Military Standards
The DVMN28 from VPT, Inc. is a combination EMI filter and transient suppression module that meets stringent standards for the U.S. and Europe. Providing 10 amps of current in a standard quarter brick package, the DVMN28 meets the requirements of the commercial off-the-shelf (COTS) and is available immediately from stock. Product features include 0- to 50-V input, 68 dBs minimum … [Read more...]
Two EMC Publications Available: Standard on IT Equipment & Draft on ESD Immunity Testing
Two new EMC standards have been made available from the International Electrotechnical Commission (IEC). CISPR 22 Ed. 6.0 (2008-09) is entitled “Information Technology equipment – Radio disturbance characteristics – Limits and methods of measurement.” Procedures are given for the measurement of the levels of spurious signals generated by the ITE (information technology … [Read more...]
Combination EMI Filter / Transient Suppression Model Meets Stringent Military
The DVMN28 from VPT, Inc. is a combination EMI filter and transient suppression module that meets the military COTS (commercial off-the-shelf initiative. Product features include 0- to 50-V input with 600-V transient, 60 dB of attenuation (minimum) at 500 kHz, a soft start feature to ensure smooth startups, under-voltage lock-out circuitry for safe operation, and 99 percent … [Read more...]
BU Researchers Working on Light-Based, EMI Immune Wireless Networks
Boston University’s College of Engineering is one academic partner launching a major program, under a National Science Foundation (NSF) Grant, to develop the next generation of wireless communications technology based on visible light instead of radio waves. BU researchers (shown at left)expect to piggyback data communications capabilities on low-power, light-emitting diodes … [Read more...]
Meeting Military Requirements for EMC and Transient Voltage Spike Suppression
The basics of EMI and transient compliance for military systems using SMPSs are covered. Dr. Glenn Skutt, VPT, Inc., Blacksburg, Virginia, USA THE EMI AND VOLTAGE TRANSIENT CHALLENGE Military and aerospace engineers face several challenges with respect to electromagnetic interference (EMI) and transient voltage compliance. The standards developed by the various military … [Read more...]
Inrush Current in DC-DC Converters
Some applications may require limiting the inrush spike into the input capacitors. Steve Butler and Jeremy Ferrell, VPT, Inc., Blacksburg, Virginia, USA BACKGROUND Inrush current is the spike of current drawn by a power supply when it is turned on. A typical power system is shown in Figure 1. The input EMI filter will include some capacitance connected across the input … [Read more...]
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