AWS IoT Core for LoRaWAN is now available in the Asia Pacific (Sydney), Asia Pacific (Tokyo), and US West (Oregon) AWS Regions, extending the footprint to 5 AWS Regions. This is in addition to the IoT Core for LoRaWAN availability in US East (N. Virginia) and EU (Ireland) AWS regions.
Going Bonkers
China’s government is acting in increasingly bizarre ways. Last Wednesday China’s Uber – the taxi ride company Didi – raised $4.4 billion in an IPO on the NYSE. Two days later, last Friday, Chinese regulators announced an investigation into Didi. Last Sunday Chinese regulators ordered that Didi’s app should not be sold on China domestic …
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Trying to drive a Cuk synchronous rectifier mosfet
After discussing the three transistor high-side buck p-mosfet driver (a recognised circuit and not mine) with some of EW’s sage commenters, I wondered once again if I could design something similar for a synchronous rectifier in a Cuk converter – where the mosfet would need to be biased negative of the 0V rail. Much googling (and …
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May chip sales up 26%
May semiconductor sales were up 26.2% y-o-y at $43.6 billion which was 4.1% up on April, says the SIA. “Global demand for semiconductors remained high in May, as sales increased both year-to-year and month-to-month across all major regional markets,” says SIA CEO John Neuffer, “the industry shipped more units on a three-month moving basis in …
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MIT designs circuits based on protein-protein interactions
Synthetic biology offers a way to engineer cells to perform novel functions, such as glowing with fluorescent light when they detect a certain chemical. Usually, this is done by altering cells so they express genes that can be triggered by a certain input. However, there is often a long lag time between an event such …
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Intermetallics and airgaps for 1nm nodes and beyond
Imec has presented an experimental study of Al-based binary compounds, with focus on their resistivity behavior. For example, for stoichiometric AlCu and Al2Cu films, a resistivity as low as 9.5µΩcm was reported. These results experimentally support their promise to be used as new conductors in advanced semi-damascene interconnect integration schemes, where they can be combined …
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Astrocast expands its nanosatellite IoT network
Astrocast has expanded its IoT constellation, launching five more nanosatellites satellites on its SXRS-5 Spaceflight mission, onboard a SpaceX Falcon 9 rocket. They have reportedly been successfully deployed and are being commissioned, and it means the Astrocast nanosatellite IoT network now consists of 10 satellites in space. The launch took place 30 June and was …
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Audio-free industrial PCs side-steps chip shortage
Responding to an international shortage of audio chips, Advantech has developed non-audio version of its most popular motherboards to help mitigate supply issues. “GPUs were perhaps always destined for shortage, but one area now being seen are the unprecedented shortages in the world of audio,” according to UK-based Impulse Embedded, which stocks Advantech-based industrial PCs. “As …
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125°C photovoltaic coupler outputs 14V for high-voltage mosfets
Toshiba has upped the output of a photovoltaic generator to drive high-voltage power mosfets in galvanically-isolated solid-state relays (SSRs). The device is the TLP3910, with a minimum open voltage of 14V – double that of the earlier TLP3906. TLP3910 is also Toshiba’s first photovoltaic coupler with a minimum isolation voltage 5kVrms. “Along with the creepage …
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200°C wet tantalum capacitors are tough for the hard life
Vishay is aiming at oil exploration, aerospace and the military with high-temperature wet tantalum capacitors. The surface-mount T24 series consists of two devices, both 9 x 7.1 x 7.4mm (case code ‘C’). 33μF – 45V at 200°C (75V -55 to 85°C) 2.5Ωmax ESR (+25°C 120Hz) 10μF – 75V at 200°C (125V -55 to 85°C) 5.5Ωmax ESR …
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