At 05:32 PM 11/28/2007, you wrote:
>Mike B wrote:
> > FYI
> >
> > In follow-up work on my clock board using the PIC internal 
> oscillator, I varied the supply to my on-board regulator, and found 
> the internal oscillator varies significantly. I did not think of 
> doing this before, but I had some PS problems and with my counters 
> set accurately to a 5V supply I varied the source from ~3V-15V and 
> found the timing off by 50% to ~500%.
> >
>
>You got a PIC to work at 15V?

Typically the timing would be off by exactly 100% at that point, and
would exhibit pronounced hysteresis.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com



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