Kyrre Aalerud wrote:
>
> I have now moved my little 4 meter wire (antenna) a little up the wall and
> am actually getting 180mV DC over a resostor that is supposed to simulate my
> PIC.  The resistor is 238 kOhm and would equal a PIC using 15 uA at 3 volts,
> running at 32 kHz.  (Approx specs for 16F62x using internal clock.)
>
> So, I am actually pulling down 98 nW and need about 45 uW so roughly 460
> times as much :-)


You were on the right track with the first design, ie
charge a cap under no load and run the PIC for a
short burst every few minutes. :o)
-Roman

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