Testers seek to remedy the longstanding problem of “noisy’ responses from an EMG instrument. Terence P. O’Laughlin and Michael J. Oliver, MAJR Products, Saegertown, Pennsylvania, USA INTRODUCTION This paper presents a shielding methodology and test in which an electromyography (EMG) instrument is shielded from spurious electromagnetic and radio frequency interference … [Read more...]
Hybrid Power Amplifier Modules & Custom Solutions Offer Flexibility in Numerous RF Apps
A new line of wideband, hybrid power amplifier modules (HPMs) from AR RF Microwave Instrumentation covers the 6- to 18-GHZ frequency range. These hybrid modules require only a single DC volt source and are 50-ohm “cascadable” building blocks with output powers up 37 dBm. The six new hybrid power modules have excellent typical gain flatness, excellent noise performance, and low … [Read more...]
EMC Society Technical Committees
What is a technical committee? The technical committees play an important role in the overall success of the EMC Society by promoting activities in their fields and providing expert knowledge and assistance to generate and review technical papers, to organize and operate sessions at symposia, to generate and develop standardsn and to evaluate the “state of the art” in EMC … [Read more...]
Voltage Sag Testing for Industrial Equipment—and a New Power Quality Measurement Technology
An electrical product should be able to ride through any regular voltage sag. Andreas Eberhard, Power Standards Labs, Alameda, California, USA Immunity from voltage sags is vital for reliable operation of our ever-more-sophisticated electronic controls and equipment. Every electrical product should be able to ride through typical voltage sags, but in many cases the first sag … [Read more...]
New Tester Provides Fast Emissions Measurements up to 6 GH
The news TDEMI 6G is the latest addition to Munich-based GAUSS Instruments line of test instrumentation. It provides time-domain emissions measurements from 9 kHz up to 6 GHz. With the addition of the 6G, the Gauss’ TDEMI line now covers the complete frequency range required for testing to commercial EMC standards. Moreover, measurement time can be reduced by up to a factor of … [Read more...]
AR Marks 40th Anniversary
AR, with headquarters in Souderton, PA, is marking its 40th anniversary. The company’s modest beginnings, in the form of a new test amplifier, started out in the basement of Donald “Shep” Shephard, who remarked that having begun in the basement that there was no place to go but up. Formerly known as AR Worldwide, AR now consists of a family of companies: AR RF Microwave … [Read more...]
Three Additions to AR’s Product Applications Team
AR RF/Microwave Instrumentation has announced three additions to its Product Applications Team. Michael Hannon, shown at left, has been promoted to Product Applications Engineer, and Jerry Joseph and Rob Rowe have each been named Product Applications Specialists for transient and conducted immunity test systems. A graduate of Lincoln Technical Institute Michael Hannon’s … [Read more...]
EMC Testing for Nuclear Power Plant Safety Systems
The International Electrotechnical Commission (IEC) has issued IEC 62003 Ed. 1.0 entitled, “Nuclear Power Plants – Instrumentation and control important to safety – Requirements for electromagnetic compatibility testing.” This standard establishes requirements for electromagnetic compatibility testing of instrumentation and control equipment supplied for use in systems … [Read more...]
A Real-life Story
The Sharp (and Painful) Relationship between Market and Economic Trends and One’s Engineering Field of Expertise and Career Choices In this month’s column I have chosen to bring up a real-life story received from one of our readers (name withheld). In summary, it tells the story of an RF engineer who strayed to programming fields and has a hard time coming back. The … [Read more...]
New Solid State Amplifier Features an Improved Noise Figure and Compact Design
The new Model 500A250A from AR RF Microwave Instrumentation is the first in a planned series of new “A” RF amplifiers. This first model covers 10 kHz to 250 MHZ and provides a minimum of 500 watts swept power when used with an RF sweep generator. A compact, innovative design has created a smaller size and reduced weight as compared to existing products. In fact, Model 500A250A … [Read more...]
- « Previous Page
- 1
- …
- 57
- 58
- 59
- 60
- 61
- …
- 66
- Next Page »
