Tech news tagged ‘system doesn’

Book review – The Dobsonian Telescope

I have no interest in star gazing, but got totally engrossed in a book on constructing Dobsonian telescopes, leant to me by a friend. Essentially, a bunch of amateurs have used sound engineering principles to evolve a telescope design that holds the various reflective and refractive bits within a few…

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Book Review – 3D Displays

Part of the Wiley/SID range of display technology books, this is a technical introduction to a wide range of 3D display types – all the way up to holographic displays. I say technical, because it has there are plenty of pixel circuit diagrams for LCDs, geometric diagrams to show how…

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An Engineer in Wonderland – Cunning battery adapter

Those clever guy’s at Zebralight in China have come up with a neat way of making an LED torch compatible with both CR123 and AA cells. Electrically, it just means a wider input voltage range – probably 0.9-4.0V. But mechanically this has previously meant screw-on extension…

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