At 08:54 AM 12/16/2013, Jarrett Kupcinski wrote:
>Closer inspection reveals that both diodes are the same. They're
>1N4004, and it looks like they're still available. Thanks again for
>pointing my eyes in the right direction, David.

You're welcome.  You can use 1N4004/5/6/7, whatever is
cheapest.  4004 has a Peak Reverse Voltage of 400 V and the others
are 600/800/1000 V.

It's a general-purpose 1-amp (absolute max @25C) diode, extremely
common.  Can (just) handle an 8 ms half-sine pulse of 30 amps.

Yrs,
d