Meeting regulatory requirements for mission-critical and non-mission-critical rolling stock power supplies

All the electronics in rolling stock is subject to challenging environmental conditions, from high temperatures in confined spaces to the heavy vibration felt by body- or axle-mounted systems. Power supplies are no exception, and must comply with relevant European or worldwide railway systems standards.

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Keeping the noise down: Converter and inverter output filtering

Most modern power conversion topologies use switched-mode techniques for highest efficiency and smallest size and cost. Inevitably, switching noise is produced and output filters are required to minimise EMI and provide reliable operation of the powe...

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Selecting DC-link capacitors in power converters

‘DC-link’ capacitors feature in many power conversion topologies and must be chosen carefully to give the best trade-off between cost, size and performance. ...

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Input filtering and protection for switched mode inverters and converters

Inverters and converters have become basic building blocks for many modern power applications. These applications must meet statutory and practical requirements for input EMI filtering and protection against injury to personnel and equipment...

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Chip-to-chip at the speed of light

As data centres and data farms continue to expand and grow, better solutions are required for system architectures that allow faster communication and more efficient operation. ...

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Specifying explosion-proof connectors

The threat of explosion is real in many of today’s industrial applications, and connectors are critical to explosion proofing since they have the potential to create arcs and sparks as part of normal operation....

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Hybrid capacitors combine technologies to get the best of both worlds

Supercapacitors are commonly used as an alternative to a rechargeable battery wherever a quick energy boost is needed, however there is another type of device on the market which combines the best features of EDLCs and Li-ion batteries....

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Sensor Fusion: The future of intelligent devices

Combining the data from multiple sensors can tell us a great deal more about the application environment than each sensor could on its own....

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Understanding ESR in electrolytic capacitors

Adam Chidley explains how component diversity has made selecting the best capacitors for power-related applications more complex than ever, and why taking independent advice makes sense....

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Designing for LoRaWAN - Murata wireless modules

As one of the world’s leading manufacturers of wireless modules for smartphones, including supplying some of the very biggest names in the market, Murata knows a thing or two about wireless technologies, and also about manufacturing modules....

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Circuit protection is vital for long lifetimes in LED lighting

LEDs are widely touted as the perfect solution for lighting applications because, in theory at least, they last forever.What’s less frequently spoken about is that circuit protection can make or break the design....

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