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Teardown: Simple approach characterizes modern LED bulbs

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LED bulbs we examined are often simpler than those made four years ago, sometimes employing discrete transistors to handle tasks once done via chips. Leland Teschler, Executive Editor Back in 2015, we examined LED bulbs putting out the equivalent of 60-W incandescent bulbs. We recently obtained several new LED bulbs to see how things have changed. The results are … [Read More...]

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GaN power devices, Part 1: Principles

Power devices based on gallium nitride (GaN) are rapidly becoming a viable, higher-performance alternative to silicon MOSFETs due to their higher efficiency and other favorable attributes. In recent years, discrete power-switching and power-handling devices based on gallium nitride (GaN) material have become practical and available, and these devices are now found in many power supplies […]

Specialized diodes, Part 2: Varactor, Gunn, and PIN diodes

Part 1 of this FAQ reviewed the standard PN semiconductor diode, and looked at some specialized variations called the tunnel, Zener/avalanche, and Schottky diodes. Part 2 briefly explores the varactor, Gunn, and PIN diodes. Q: What about the varactor diode? A: The varactor diode (Figure 1), also called a voltage variable capacitor (VVC) or varicap […]

Specialized diodes, Part 1: Tunnel, Zener/Avalanche, and Schottky diodes

There are diode varieties which do much more than just block current flow in one direction and allow it in the other; some of these special diodes have favorable attributes while others are essential in modern electronics. Every electronic engineer is familiar with the diode: it’s a basic, widely used, two-terminal semiconductor device. The diode’s […]

Strengthening IoT with smart cards

With the Internet of Things (IoT), industries are relying on connected devices that can interact with each other and also with processes and personnel thus helping businesses meet their goals efficiently. IoT enabled devices are being successfully used in multiple industries like manufacturing, construction, logistics, agriculture, etc. and helped to optimize assets, conserve resources and […]

How it Works: Personal Defibrillator — Design and implementation

Part 1 of the FAQ began an exploration of the first Philips AED, a very innovative personal defibrillator which completely changed the way, place, operation, user role, and time-to-administer electric-shock resuscitation, as well as the popular thinking and expectations about it. Q: What other challenges did Philips face in delivering the desired BTE waveform? A: […]

How it Works — the Personal Defibrillator: Medical basics and principles

The personal defibrillator combines sophisticated electronics with precise, adaptive control of the high-energy pulses which can re-start the heart’s beating but do so without shocking the patient to death. You’ve seen those life-saving defibrillators in offices, malls, and even homes, quietly at the ready for immediate use. When the Philips Medical Systems division of Royal […]

Stress & Strain, Part 2: Implications for electronics

The mechanical strain induced on electronic components due to mechanical and thermal stress is an important aspect of their performance consistency and limitations; stress is also used to enable some materials to provide critical electronic functions. Part 1 of this FAQ looked at the basic principles and tests for material strain when stress is applied. […]

What happens to an MCU if there’s an EMP or Solar Superstorm? Part 1

An Electromagnetic Pulse (EMP) is an impulse or blast wave that’s generated by geomagnetic activity due to solar flares, solar storms, solar superstorms, or the detonation of nuclear weapons. The horrible truth is that an EMP can wipe out electronics by inducing inductive coupling on traces, wires, or any conductive media within hundreds to thousands […]

Difference between Cat 5e and Cat 6a cable

Cat 5e (enhanced) and 6a (augmented) are the most frequently-used media in residential and commercial Ethernet networks. Cat 6a has higher bandwidth and is faster, but the less expensive Cat 5e is often chosen when adequate for the application. It performs well up to 100 MHz. In contrast to coaxial cable, used in the first […]

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Wireless

e-Book: Wireless and Wearables

by David Somo, ON Semiconductor It may seem far-fetched to suggest that “Star Trek fashion” will be in style with people walking around wearing amped-up watches, eyeglasses, rings and bracelets. But then again, years ago it seemed futuristic to … [Read More...]

Understanding wireless across the spectrum

Waves are part of our world as both waves in the ocean and radio waves coming in from the Sun’s corona share fundamental properties.[i] Wireless communication was born from the science of waves and how they travel. After more than a hundred years of … [Read More...]

Automotive Applications

eGaN FET gets automotive AEC Q101 qualification

EPC announces successful AEC Q101 qualification of the 80 V EPC2214 designed for lidar systems in the automotive industry and other harsh environments. eGaN technology has been in mass production for over nine years, accumulating billions of hours … [Read More...]

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