There are many kinds of risk For example: the risk of being late for an appointment; the risk of buying a lottery ticket but not winning a prize; the risk of designing and manufacturing a new product that might not sell well enough, etc. The above are examples of non-safety-related risks, but safety-related risks also exist. EMC1 Risk Management (or, the Risk Management … [Read more...]
Amplifers
A Simple Method for Estimating Radiated Emissions – Part 2
I recently published this blog, detailing a simple proven method for estimating the radiated E field with specified test setup. As a result, I received the following feedback... 'This model is wrong for equipment tested over a ground plane as described. The complex correct transmission line model (less the ground plane) is given by Balanis, and a simpler but accurate … [Read more...]
A Simple Method for Estimating Radiated Emissions
A simple method for estimating radiated emissions I recently received the following question: How to calculate the radiated E field with following test conditions with an antenna placed 1 meter away from the test setup?: A commercial equipment under test with metal housing Equipment placed on the grounded metallic table/plane LISN installed (and also placed … [Read more...]
Comparison of PWM VFDs versus Resonant Link Converters – Part 2
In Part 2 of this blog, the harmonic current distortion of a typical Variable Frequency Drive (VFD) is discussed, as well the possible solutions to the problems that this causes. Active Front End or (AFE) units are also discussed and some of the issues that they themselves … [Read more...]
Comparison of PWM VFDs versus Resonant Link Converters – Part 1
AC variable frequency drives (VFDs) have been in existence in a number of forms since the early 1970s. In the early 1980s the “pulse width modulated” (PMW) VFD versions began to appear. This form of motor control produced less motor rotor and stator harmonic heating and delivered smoother torque control at slow motor speeds. Thirty years on PWM VFDs are still the most … [Read more...]
Heilind Electronics Partners with Quell Corporation, Expanding EMI/RFI Filtering Portfolio
Heilind Electronics, a premier global distributor of electronic components, has expanded its connector portfolio with the addition of Quell Corporation – a subsidiary of HEICO and a leading manufacturer of EMI/RFI and transient protection solutions. The distribution agreement includes both Heilind Electronics and Interstate Connecting Components (ICC), the mil-aero division of … [Read more...]
Interstate Connecting Components (ICC) Introduces BHA PTFE-Plated M28876 Connectors from Amphenol Fiber Systems
Interstate Connecting Components, a division of Heilind Mil-Aero and leading distributor of military-aerospace connectors and accessories, is now offering M28876 circular fiber optic connectors with black hard anodized (BHA) PTFE (polytetrafluoroethylene) plating. The connectors are precision-engineered by Amphenol Fiber Systems International, a leading manufacturer of fiber … [Read more...]
TMD USA wins major defense contract for traveling wave tube amplifiers in a mission-critical surveillance role
Now part of Communications & Power Industries (CPI)) has won a large defense contract for traveling wave tube amplifiers (TWTAs) for use in a radar unmanned aerial vehicle program. Valued in excess of $2.5 million, the contract was awarded by a prime contractor under the terms of a competitive bid. Said Tom Curtin, vice president, sales and business development, TMD … [Read more...]
Orbel, Niche Designer and Manufacturer of Light-Gauge Metal Components and Assemblies, Serves Critical-Mission Applications from Fighter Jets to Self-Driving Cars for 60 Years and Counting
By combining hard work with ingenuity over three generations, Orbel, maker of custom light-gauge metal components and assemblies, quietly contributes to progress around the world. From precision parts for U.S. fighter jets to electric cars and tomorrow’s self-driving cars, this three-generation family business has grown from a man-in-a-garage operation started … [Read more...]
HARTING Names Heilind Electronics 2020 North American Broadline Distributor of the Year
The North American Broadline Distributor of the Year award is based on the outstanding support of HARTING products, year-over-year sales growth and first-class customer support. Heilind Electronics, a leading distributor of electronic components and authorized global distributor for HARTING, has been honored with the manufacturer’s 2020 North American Broadline Distributor … [Read more...]
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