On Tue, 17 Jul 2007 23:22:41 -0500, "Tim Williams"
wrote:

Other possibilities;

Monitor V, I (or control one and watch the other) and sweep frequency; find
series resonance, ESR, ESL and C in one pass.

That is close to a mini VNA. That actually might not be hard to do.
DDS synthesizers are cheap nowadays.

Run repeated sweeps and trigger the ADC at progressive points to get a
complete plot of relatively fast waveforms with a relatively slow ADC (I
forget what this method is called...um recurrent sweep?).

Equivalent time sampling.

John