I've always felt that copying a proven design is more expedient that
reinventing the proverbial wheel so when I came across George Daughters K6GT
design for the 4CX1600 amp in the 2000 ARRL handbook, I decided to copy some
of the circuits he outlined. The power supply looked good to me so I
started looking up the component parts in my trusty Mouser catalog. When I
got to the screen supply section, I came across a NPN transistor designated
as Q1 MPSU010. I cannot find this part listed anywhere. I believe that it
is manufactured by Central Semiconductor Corp because I see other MPSxxx
parts made by them but I can't find it on their website. Can someone lead
me to a source for this part and a description? I am going to take a 300VAC
Peter Dahl transformer that I found a Dayton a few years back and full wave
bridge it up to 420VDC and then I want to "regulate" it down to about 350VDC
with some series Zeners. I am not using the 4CX1600 but that tube seems to
have a lot in common with the 4CX1500B, the tube I'm going to use.
Any help on this?
Thanks,
Bob Maser W6TR
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