Russell McMahon ha scritto:
> There seems to be a reluctance to even consider the suggestion I made.
> It may have been commented on an rejected for some good reason but I
> don't recall seeing it.
> Transformer and 2 resistors in basic form.
> Connect one leg to Vdd, other via divider to ground and tap to ADC in.
> Add cap if desired for noise handling.
> 
> Track smoothed minimum and maximum to give loaded full voltage excursion.
> Sounds super easy, no body diodes at risk, no diode drops, minimum
> components, full cycle of waveform, ... .


No Russell, I did consider it :)
it's appreciated!

As Olin said too, the hardware is already there AND I'm almost sure that 
I can get the result all the same with this configuration.

In case I put my hands on the circuit, I'll go with your approach to get 
full-span wave and also avoid the -GND overflowing.


I also liked Marechiare's idea, though it brings in completely different 
... things.

-- 

Ciao, Dario
--
Cyberdyne
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist