Diodes (was Re: Can anyone ID this part?)

["Peter VanDerWal" <peter_v@primenet.com>]

>How about a good freewheeling diode?
>Thank you for the help Lee
>


    You want a fast diode for a freewheeling diode.  Ideally you want a
schottky diode, but they can be hard to find in high voltages.  If you can't
find a suitable schottky you can probably get away with a "Fast Recovery
Diode" or an "Ultra Fast Recovery Diode".   You can also parallel diodes to
get the desired current rating, if you do I think they need to be matched
diodes (like from the same lot).

    C and H sales carries a lot of neat surplus silicon.
http://www.aaaim.com/CandH/index.htm
    Currently they have a couple low voltage schottkies and things like a
600V 400A IGBT module for $89.50
http://www.aaaim.com/cgi-local/shop991/shop.pl/SID=171073239207/page=TRNS.ht
m#PD96510  about half way down.


You can even shop online.  I think they have a $20 minimum order.

P.S. they also carry surplus DC motors up to 4 or 5 hp.