Current and voltage chip takes the hard work out of isolated mains measurements

Allegro MicroSystems has integrated power, voltage and current monitoring into a single chip with reinforced isolation. Only a handful of resistors are needed to complete the high-voltage interface (diagram right). Called ACS37800, it uses a Hall effect scheme to measure current and external resistors to stand-off the voltage measurement – no opto-isolators, Rogowski coils, current transformers, isolated operational ...

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UK competition authority to investigate Arm-Nvidia deal

The UK competition watchdog, the Competition and Market Authority (CMA) is to investigate the proposed takeover of Arm by Nvidia. It is asking for peoples’ views on the planned merger. The CMA states: ‘This is an early opportunity for interested third parties to comment on the impact that the takeover could have on competition in ...

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Triacs handle full current at 150°C

STMicroelectronics’ 800V 8H triacs operate at full rated current up to the maximum junction temperature of 150°C, allowing heatsinks in drives for AC loads to smaller, claims the company. The family spans 8A to 30A, and the 800V peak off-state voltage allows mains applications including operating from up to 400V three phase. They can withstand ...

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1.7kW automotive dc-dc weighs 324g, due to GaN switching

French PSU maker BrightLoop Converters has built its latest automotive dc-dc converter around GaN transistors from EPC. “By switching from silicon transistors to gallium nitride,” said EPC. “BrightLoop was able to increase the switching frequency of their design from 200kHz to 600kHz, while keeping the same efficiency. This design change increased the power density of the solution ...

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SPRINT backs UK five space tech projects

The UK’s Space Research and Innovation Network for Technology (SPRINT) – via funding from the UK Space Agency – is supporting five new space projects involving industry and university collaboration. The universities involved are Edinburgh, Leicester and Southampton, and the startup companies are Absolar, ArchAI, Geospace Agricultural, Redshift, Trade in Space and XCAM. The aims ...

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Transparent solar cell from simple metal oxides

A transparent solar cell can be made using straight-forward metal oxides, according to researchers at Incheon National University in Korea. The cell converts the ultra-violet portion of the sun’s spectrum into electricity using a junction made from p-type NiO and n-type TiO2 – the latter a well-known photo-electric material. Unlike more exotic transparent solar absorbers, ...

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Polymer stops solar panel connector fires

Sandia National Laboratories has developed a polymer that helps prevents fires caused by ageing solar panel connectors. The problem is that corrosion inside such connectors can cause heating through increased series resistance, and eventually arcing. “As solar panels become more efficient, they’re able to produce more power,” said Sandia researcher Kenny Armijo, who has spent ...

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Achronix in talks to IPO

Achronix, the FPGA and eFPGA specialist,  is in talks about going public, reports Bloomberg. Achronix is said to be working with a SPAC (special acquisition company) calked ACE Convergence Acquisition. SPACs, sometimes called  “blank check” companies, are set up simply to make acquisitions and are used  to take companies public without going through the traditional IPO ...

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Oxbotica raises $47m Series B

Oxbotica, the driverless car software startup, has completed  a $47 million Series B funding round. Investors include BP Ventures, Tencent, Halma, HostPlus, IP Group and Venture Science. Oxbotica is developing hardware-agnostic software which can deliver ‘universal autonomy’  to multiple vehicles. The company’s technology does not rely on external resources like GPS or ultra-precise mapping, but ...

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