Matthew Mucker wrote:
>
> I have a prototype circuit that, about 75% of the time, does not do a
> proper power-on reset.  The power supply is a wall-wart transformer with a
> 10uF cap across the leads ffeding a 7805 regulator with a 100uF cap across
> +5V and gnd. (The capacitor values were chosen by the scientific method of
> looking into the junkbox and picking out what was in there)
>
> Is there a small, cheap external circuit I can build to guarantee a
> power-on reset?
>
> Thanks,
>         -Matt

The databooks contain a number of circuits, ranging from cheap to
effective.

--
Friendly Regards

Tjaart van der Walt
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