The use of Lidar (Light Detection and Ranging) for automotive applications, especially autonomous vehicles, and aerial surveys is rather well known. With the COVID-19 pandemic, the technology has recently been applied to provide social distancing and help people transition to the new normal. For example, Quanergy has developed a Social Distancing Flow Management platform. It […]
Infographic: Comparing piezoelectric, electrostatic and electromagnetic device applications
By Margaret Bezerko, President of SensComp When it comes to electronic design, function dictates framework. While piezoelectric, electrostatic, and electromagnetic devices offer distinct benefits, each comes with specific drawbacks and best-fit applications. In this piece, we’ll examine each system with a quick analysis of operating mechanisms, potential pain points, and ideal use cases for current […]
Finding fiber-optic cable anomalies
Optical fiber is a form of waveguide. The lateral dimension of a waveguide depends upon the wavelength of the signal conveyed. A waveguide is not capable of carrying a wavelength much larger than its diameter. Optical fibers are characterized by their core diameters. In single-mode fiber, the standard core diameter is 9 μm. Standard multi-mode […]
Sound design considerations for Class D amps
The first two FAQs in this series, “Class D Amplifiers for High-Efficiency Switched-Mode Sound” and “Class D Audio – Why Now?” focused on basic Class D amplifier topologies, modulation techniques, general component and technology advancements that have made Class D amplifiers an increasingly viable option, and the evolving tradeoffs between silicon and GaN power devices. […]
Class D audio – Why now?
Class D amplifiers were first proposed in the 1950s. Why have they only recently been gaining more widespread popularity? The answer involves several factors: There were no switching transistors that met the performance demands of Class D amplifiers until the 1980s. And it was not until the mid-1990s that Class D integrated circuits became available. […]
Class D amplifiers for high-efficiency switched-mode sound
Sound is an analog or linear phenomenon. Traditional audio amplifiers such as Class A and Class AB operate the amplifying transistors in the linear mode. Class A and AB amplifiers can provide clean sound, but are inefficient, like linear power supplies. Class D amplifiers are similar to switched-mode power supplies and use various pulse modulation […]
Patrick Blackett: Big Data, WWII, and U-Boats, Part 4: Aircraft survival
Before being awarded a Nobel Prize, Patrick Blackett was a pioneer in the use of extensive data analysis, error bounding, and probability theory of anecdote-based tactics, as he devised improved strategies against deadly German submarines. This last part of this article looks at a World War II operation unrelated to Blackett’s work, but which used […]
Patrick Blackett: Big Data, WWII, and U-Boats, Part 3: Overcoming U-Boats
Before being awarded a Nobel Prize, Patrick Blackett was a pioneer in the use of extensive data analysis, error bounding, and probability theory of anecdote-based tactics, as he devised improved strategies against deadly German submarines. Part 2 of this article looked at Blackett’s work with the CH radar installation on Britain’s coast. This part looks […]
Patrick Blackett: Big Data, WWII, and U-Boats, Part 2: Analytics begins
Before being awarded a Nobel Prize, Patrick Blackett was a pioneer in the use of extensive data analysis, error bounding, and probability theory rather than anecdote-based tactics, as he devised improved strategies against deadly German submarines. Part 1 focused on the beginnings of “systems analysis” approach. This part looks at Blackett’s early work with radar […]
Patrick Blackett: Big Data, WWII, and U-Boats, Part 1: Context
Before being awarded a Nobel Prize, Patrick Blackett was a pioneer in the use of extensive data analysis, error bounding, and probability theory of anecdote-based tactics, he devised improved strategies against deadly German submarines. The idea of “big data” is a major topic today, of course, but it’s not a new concept. During World War […]
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