[sdiy] Rectifier for logic level pulse?

[Antti Huovilainen]

On Mon, 28 Sep 2009, Tim Parkhurst wrote:

> Essentially, what I need is a circuit that produces a short 
> positive-going pulse when the input goes low to high (that's the easy 
> part) AND another positive-going pulse when the input goes from high 
> back to low (the not so easy part).

Input ->       C -> R to gnd -> D -> output
       -> -1 -> C -> R to gnd -> D ->

Not exactly precision circuit, but should do the job.

Antti

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