On Fri, 27 Oct 1995 10:17:44 -0700  Lee Jones wrote:
>On Fri, 27 Oct 1995 06:21:12 -0600, Harrison Cooper wrote:
>
>>I've started to play around with trying to sense a switched 110 VAC
>>signal.  I have brought it into an I/O pin (a diode protected pin),
>
>[snip]
>
>On Fri, 27 Oct 1995 16:20:26 +0100, Conny Andersson wrote:
>
>> Try this one:
>
>[diagram removed -- high ohm resistor input with diode voltage limiters]
>
>> The diodes are there for protection (voltagelimiting to 0-5V)
>
>Well, actual range is 0 minus 1 diode-drop to supply (nominally 5V)
>plus 1 diode-drop.  You might want to use a schottky diode to limit
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