EMC regulation of solar installation equipment has failed to keep pace with actual developments. Siegfried W. Best As populations throughout the world become more aware of environmental issues and the necessity of forestalling further damage and pollution, attention has been focused on finding eco-friendly means of generating electric power. Wind farms are one highly touted … [Read more...]
TI unveils lowest power zero-drift instrumentation amplifier for portable, precision applications
Providing an unmatched combination of precision, low power and low supply voltage, Texas Instruments Incorporated introduced the industry's lowest power zero-drift instrumentation amplifier. The device features the lowest quiescent current and lowest input bias current versus the nearest competition, as well as an impressive power-to-noise ratio, very low offset voltage/drift … [Read more...]
Instrumentation Amplifier Includes Filters to Reduce RF Interference
The new INA333 is a is a zero-drift instrumentation amplifier from Texas Instruments with input bias current of 200 pA and quiescent current of 75 µA. Offset voltage is 25 µV, and offset drift is 0.1 µV/°C. The INA333 yields an input voltage noise of 50 nV/rt-Hz with a proprietary switched capacitor notch filter. The MSOP-8-packaged amplifier has 3 op-amp architecture and … [Read more...]
Two CISPR EMC Drafts Issued
CISPR 15 Amd. 2 Ed. 7.0 (2008-06) and CISPR16-2-1 Ed. 2.0 (2008-06) are now available. Amendment 2 of CISPR 15 involves the “introduction of measurement instrumentation uncertainty and deletion of banning of sales.” Edition 2 of CISPR 16-2-1 involves the “specification for radio disturbance and immunity measuring apparatus and methods – Part 2-1: Methods of measurement of … [Read more...]
Amended Standard Covers Testing of Power Supplies, Harmonics, and Interharmonics
The International Electrotechnical Commission has issued IEC 61000-4-7-am 1 Ed. 2.0. This amended standard is entitled, “Electromagnetic compatibility (EMC) – Part 4-7: Testing and measurement techniques – General Guide on harmonics and interharmonics measurements and instrumentation for power supply systems and equipment connected thereto.” For more information, or to … [Read more...]
New York State Company Offers Military-Approved QPL Inductors
Gowanda Electronics, of Gowanda, N.Y., has introduced a military-approved RF inductor series which is on the military’s Qualified Product List per MIL-PRF-83446. Gowanda’s MLRF3013 series addresses a need in the marketplace for enhanced RF inductor options in military applications. The MLRF3013 series is designed for RF electronic applications in military, aerospace and defense … [Read more...]
New Handheld Tektronix Real-Time Spectrum Analyzers Show Live RF
Tektronix, Inc., a worldwide provider of test, measurement and monitoring instrumentation, announced the new SA2600 handheld Real-Time Spectrum Analyzer that includes DPX™ waveform image processor technology that provides a live RF view of the spectrum. DPX is now also available on the H600 “RF Hawk” handheld unit originally introduced in February. With these additions, … [Read more...]
CAP Wireless Signs McBride Scientific Sales as Manufacturer’s Representative for U.S. Southern Region
CAP Wireless, Inc. (CAP), a leading supplier of high-performance microwave and RF amplifiers and amplifier-based subsystems, today announced that in order to provide dedicated service and support to customers in the Southern Region of the United States, the company has signed McBride Scientific Sales, Inc. as a manufacturer’s representative for Texas (except El Paso), Oklahoma, … [Read more...]
A Discussion on the FCC SAR Test Guidance Documents for Laptops and Handsets with Multiple Transmitters
The FCC will address exactly what TCBs can review for SAR and simultaneous transmitters in future updates to the TCB exclusion list. David A. Case, Cisco Richfield, Ohio, USA For those involved with product approval for Federal Communications Commission (FCC) certification, the use of the Telecommunication Certified Body (TCB) for approval helps speed the process for product … [Read more...]
Sometimes an EMI Test Failure is not an EMI Test Failure – Lessons Learned in the Real World of Shielded Enclosure Testing
EMI testing in an unusual environment takes more time than testing in a lab environment. Ed Kirchner, Harris Corporation, Melbourne, Floria, USA Jeff Prosser, Rubicom Systems, Melbourne, Floria, USA Grant Lohsen, Georgia Tech Research Institute, Atlanta, Georgia, USA INTRODUCTION A Harris Corporation test team recently performed a shielding effectiveness test on a welded … [Read more...]
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