Monday, November 15, 2010

Design And Absolutes

I keep saying that my electronics "career" is on the wane, but my latest article is now on the shelves in WH Smith in the UK (Everyday Practical Electronics). With many of my designs, I have sought to unhinge the design from absolutes -- in this case, from absolute light level. It picks up fluctuations in light level -- but only rapid fluctuations -- and operates over the considerable range 200-10,000 lux. It combines simplicity and sensitivity. One of the things this circuit could do, as an example, is monitor an entire street for movement.

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