You've caught me at work, so I can't run look at the hookup. Yes, I bought four of them to use on my Alephs so as to pull the Plitrons back off for use elsewhere.
I'll try to remember to look when I get home tonight.
Okay, here's what testing Chez Bear yielded.
Secondary windings (four total):
Yellow-Orange (there are two of these)
Red-Black (there are two of these)
As far as polarity goes, I wired them thusly:
Blue & Purple to one leg of incoming AC
Gray & Brown to the other leg of incoming AC
2x Yellow to bridge
2x Orange to ground
2x Red to ground
2x Black to bridge
(Sorry, Petter...just the one bridge. Perhaps I'll splurge and give the Aleph-X a separate bridge for each rail--but first I have to find time to work on the silly thing.)
The secondaries read 37.5VAC no load, as I recall. In an Aleph 2, they yield about a 48 or 49VDC rail after diode losses through the bridge. They run just the least bit warm to the touch, whereas the Plitrons are stone-cold under load. They are physically smaller than the Plitrons, which may help those who are trying to cram everything into an existing cabinet.
And, yes, the price was reasonable.
Ok, Just checked the Toroid I got. The part number is TC50008, VA 1010P/P, Input 2x100-120VAC @ 50/60Hz. I do not see any brown wire but have 3 extra leads, black, white and red (pink?) Please help. Thank you.
My three transformers have all written TR50012 on them. If yours are different from mine, I cannot give the colours to you.
As you wrote, the transformer has 2x primarys. This means you should have four leads for the pri.windings. The four leads should be thinner then the secondary taps. If you only have 3 "thinner" leads, this could mean one of them is common for both pri.windings. You also mentioned 6 primary leads, so maby you have 2 "sets" of them. You realy should try a ohm-meter to find out your self.
These were part of the same deal and ARE the same as the
TR 50012 types.....with the same markings..
color and wiring are different............
BTW: These came out of Mondial amps
37.5Volts on these taps
Yellow and Orange
Yellow/White & Orange /White
Red/White & Black/White
Red & Black
Hope this helps
Apex Jr www.apexjr.com