Posts Tagged ‘google’

An Engineer in Wonderland – A neat one-way valve

I was cheering on some friends at the London Marathon, and for the first time paid some attention to those stick-shaped balloons that kids bang together to make a noise – most litter bins had at least one pair in. They are made of not-particularly-stretchy plastic – polyethylene I…

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An Engineer in Wonderland – Led Christmas lights

See all ‘Engineer In Wonderland’ posts I was rigging up some Christmas lights and in a fit of enthusiasm thought that flashing would be good. So I drew out a multivibrator, then wondered what other two transistor circuits would also flash some lights. Mr Google delivered this rather good site…

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An Engineer in Wonderland – portable toilets

There is something wonderful about portable toilets. Not only because they are the difference between privacy and bearing your bum in public, but because the construction is so neat. There are a few simple plastic mouldings, which I assume are vacuum or pressure formed from flat sheets on a single…

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