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Simple surface nano-particles could improve LEDs

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Predictable arrays of plasmonic nano-particles can be grown on the surface of LEDs to improve photon emission by localised surface plasmon resonances, according to the University of Michigan. “The idea of adding nano-particles to increase LED efficiency is not new, but previous efforts to incorporate them have been impractical for large-scale manufacturing,” said the University. …

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AtlantecRF launches 500MHz – 20GHZ digital attenuator

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AtlantecRF, the Braintree RF and microwave specialist, has launched an ultra-broadband 500MHz to 20GHz Digitally Controlled PIN Attenuator. The Digital Attenuator (ADA-500-2000-60/0.5) covers the whole frequency range from 500MHz to 20GHz and provides a minimum attenuation range of 60dB in 0.5dB steps with TTL control of 7 bits. Switching time is less than 200 nanoseconds and …

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Arduino: testing ‘brown-out’ on ATtiny85

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Following on from getting an Arduino programme to run on an 8pin ATtiny (ATtiny85), I need to invoke the in-built brown-out reset circuit – because my application involves running from an intermittently-charged super-capacitor across the supply rails, creating a slowly-varying supply voltage. If brown-out reset is not invoked (detector ‘off’ is the default), then the chip may …

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Trashing The No Smoking Rule In Intel’s Lay-out Room

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Masatoshi Shima designed the logic on the 4004 and, in doing so, helped trash the no-smoking status of Intel’s layout room. “In the layout room, whenever I went there for checking the 4004 layout, quite often I found Dr Noyce was checking the layout – always smoking lots – always putting two packs of cigarettes on …

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