Tech news 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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