In article , wrote:
Please be aware of that fact that high voltage multi-junction diodes for
microwave ovens are available for next to nothing and can be a good
substitute for long diode strings with a single element.

Now THAT's a good idea! Any idea how to test USED ones?

Plug 'em into the AC power line, measure DC out. The voltage drop on them
is too high to use the diode setting on most meters.

On my morning school-bus route, I see about one discarded microwave oven
per month, and if they're not too far from the bus-barn, I return later,
"liberate" them from the "sidewalk store" and tear them apart for their
super-strong magnets which my grandkids really enjoy. But I've also been
saving the transformers, diodes, fans, and capacitors, with the ultimate
goal of making a high-voltage power supply for a homebrew amplifier. So,
without any high-tech equipment, how might those diodes be tested?

The transformer is the BEST PART.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."