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basics

GaN power devices, Part 1: Principles

May 23, 2019 By Bill Schweber Leave a Comment

GaN power devices

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 […]

Filed Under: FAQ, Featured, Power Electronic Tips Tagged With: basics, efficientpowerconversioncorporation, FAQ, gansystemsinc, texasinstrumentsinc, transphorm

Stress & Strain, Part 2: Implications for electronics

May 6, 2019 By Bill Schweber Leave a Comment

stress & strain

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. […]

Filed Under: FAQ, Featured Tagged With: basics, FAQ

Filters, Part 2: SAW and BAW devices for RF

March 27, 2019 By Bill Schweber Leave a Comment

Part 1 of this FAQ looked at the basic available electronic filters – analog, switched capacitor, and digital – and briefly reviewed the attributes of each. As the frequencies to be filtered reach to 1 GHz and well beyond, while the selectively needed also became narrower, these filter approaches can no longer support many of […]

Filed Under: Analog IC Tips, FAQ, Featured Tagged With: apitechnologies, basics, broadcom, FAQ, qorvo, texasinstrumentsinc

LoRaWAN security design tips: Designing with a stand-alone security chip

March 26, 2019 By John Koon Leave a Comment

With the growth of the Internet of Things, cyber attacks are increasing at an alarming rate (Figure 1). Key provisioning, a process of key generation and device authentication, is a critical part of establishing security. Whoever holds the key will be able to access the payloads, i.e. the valuable data stored in the application server(s). […]

Filed Under: FAQ, Featured, Microcontroller Tips Tagged With: basics, FAQ, microchiptechnologyinc, thethingsindustries

8-bits and counting: 8-bit MCUs are still going strong

March 22, 2019 By Scott Thornton 3 Comments

Aeneas nanosatellite

Microcontroller units (MCUs) never stop evolving; a more functional, featured MCU follows every model. Embedded systems have grown with continually growing MCU technology, yet there are many traditional MCUs that are still selling in high volumes. Atmel 8051 is one of those legendary MCUs which have developed a considerable demand in the market. The Atmel […]

Filed Under: FAQ, Featured, Microcontroller Tips Tagged With: atmel, basics, FAQ, microchiptechnologyinc

Filters, Part 1: Analog, switched, and digital filters

March 19, 2019 By Bill Schweber Leave a Comment

Filters are essential functions in most circuits and systems; as frequencies extend into the multi-GHz range, surface acoustic wave (SAW) and bulk acoustic wave (BAW) filters are needed to meet the design objectives. An engineer I worked with (and whose name I have forgotten) once remarked to about electronic filters (and he was serious): “like […]

Filed Under: Analog IC Tips, Analog ICs, FAQ, Featured Tagged With: analogdevicesinc, basics, FAQ, qorvo, texasinstrumentsinc

MRI, Part 2: Historical development (and lawsuits)

March 18, 2019 By Bill Schweber Leave a Comment

The modern MRI system is an amazing blend of diverse technologies, based on the realization that a small but critical aspect of the spin of hydrogen nuclei could be leveraged to provide a safe, non-invasive way to see inside a human body. Part 2 of this FAQ looks at the physics and other advances that […]

Filed Under: Analog IC Tips, FAQ, Featured Tagged With: basics, FAQ

Working with higher voltages, Part 2: Voltage multipliers

March 18, 2019 By Bill Schweber Leave a Comment

In part 1 of the FAQ, we looked at techniques for a modest amount of boosting of lower voltages, as well as for increasing a voltage to a much higher value. The techniques discussed thus far boost and thus multiply the voltage, but what are called voltage “multipliers” usually give push voltages to much-higher values. […]

Filed Under: FAQ, Featured, Power Electronic Tips Tagged With: basics, FAQ, spellmanhighvoltageelectronics

Working with higher voltages, Part 1: Voltage boosters

March 14, 2019 By Bill Schweber 2 Comments

Whether for efficiency or due to the device physics, many applications require voltages ranging in the tens, hundreds, or even thousands of volts; the circuits which produce these voltages start with basic charge pumps and extend to voltage multipliers with simple schematics but many subtleties. Lower-voltage circuitry is the trend, with ICs and designs operating […]

Filed Under: FAQ, Featured, Power Electronic Tips Tagged With: analogdevicesinc, basics, FAQ, texasinstrumentsinc

Magnetic resonance imaging (MRI), Part 1: How it works

March 11, 2019 By Bill Schweber 5 Comments

The modern MRI system is an amazing blend of diverse technologies, based on the realization that a small but critical aspect of the spin of hydrogen nuclei could be leveraged to provide a safe, non-invasive way to see inside a human body. Magnetic resonance imaging (MRI) is an extraordinarily valuable and vital tool for non-invasive […]

Filed Under: FAQ, Featured Tagged With: basics, FAQ

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