Tech news tagged ‘LED’

Cunning Linear Tech chip saves bicycle camera flash effect

I was impressed the moment I first saw¬†Linear Tech’s LTC3110.

It is a voltage rail back-up controller that uses supercaps (or a rechargeable battery) as an energy reservoir.

It includes almost everything you need, including being able to empty the supercaps (one or two in series) until…

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LED flasher actually flashes

Maybe I shouldn’t be surprised, the led flasher modelled in LTspice works, just about as intended – nice crisp flashes at about the right rate.

Seeing as everything is relying on Vbes and Vfs, the timings of the real thing are pretty similar to the model – the scope trace is…

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LED flasher 3 (6!)

Much like kids get addicted to video games, I find time dilating as I mess around with ideas for a ‘simple’ LED flasher using Linear Tech’s free version of spice – LTspice – as recommended by Steve Kurt.

Note: here is a breadboard version.

And now I have led flasher version…

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Getting to sleep at night despite technology

A wise friend of mine once pointed out that drinking too much coffee doesn’t necessarily stop you going to sleep.

What it can do, is stop you getting back to sleep if you wake up for some reason in the early morning – to have a pee for example.

And…

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LED car headlights – a subtle problem

Slightly more finesse may be required from car manufacturers when they incorporate headlights with LED main beams.

In these dark winter days, the friendly driver’s thank-you wave becomes the friendly thank-you main beam flash.

I expect most car drivers do it…

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