Jonathan Goodish wrote:
I put a voltmeter on the alternator output and measured between 32-35 AC
volts at moderate load and moderate RPM. Looks like some diodes have
decided to give up.

Do you have access to an oscilloscope? That will tell you the "truth"
about what
is happening on the bus. Go look at the waveforms I posted in your
earlier thread...

Is your A/C 14V or 28V. If your A/C is 28V, and your meter doesn't
block dc, then the 32V reading might sort of make sense?

If I were to hook my true-RMS Fluke 77 DVM to my 14V Cessna, under
charge, the ripple would be less than 0.25Vac.