Understand, I was just the opposite, wanting to keep dangerous (120 VAC) 
away from untrained humans.:) There still is 2 ways to walk around the 
town square, one with the sun in the eyes and the other with the wind at 
you. :) I do have several extra wall warts and PCB's available as spares.

Dario Greggio wrote:
> Carl Denk ha scritto:
>   
>> That's what I do on my standby generator's PLC, but should work on a 
>> PIC. A wallwart with 12 VAC out, rectifier bridge, and resistor voltage 
>> divider with a pot for for calibration adjustment. All I need is voltage 
>> within a few volts accuracy, to verify the generator is actually putting 
>> out current, or the power line is down.
>>     
>
>
> Yeah, as I said, I wanted to avoid those external parts.
> thank you
>
>   
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