Apex 1010VA with (4) 37.5 secondaries, wiring question - diyAudio
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Old 22nd April 2002, 05:23 PM   #1
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Default Apex 1010VA with (4) 37.5 secondaries, wiring question

Hello,

Anyone here have the pinout for the 1010VA Apex Jr. toroid?

Thank You, Rob
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Old 22nd April 2002, 09:54 PM   #2
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Grey,

If I'm not mistaken you have used one of these, right?

Any help would be great,

Digi
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Old 22nd April 2002, 10:02 PM   #3
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Rob,
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.

Grey
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Old 22nd April 2002, 10:05 PM   #4
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Thanks Grey,

I appreciate your help, otherwise I might go up in smoke

Rob
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Old 22nd April 2002, 10:32 PM   #5
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Default So how did they work?

Info on how they worked would be interesting. Apex have good prices.

Does the unit have separate windings or is it simply taps?

Is the unit noisy?

Petter
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Old 22nd April 2002, 11:37 PM   #6
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Petter,

It has 2 primary and four secondary windings, not CT.

I am not familiar with the regulation and noise of this unit, maybe Grey can fill us in on that too.

Cheers,

Rob
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Old 23rd April 2002, 04:45 AM   #7
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Okay, here's what testing Chez Bear yielded.
Primary windings:
Blue-Purple
Gray-Brown
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:
Primary--
Blue & Purple to one leg of incoming AC
Gray & Brown to the other leg of incoming AC
Secondaries--
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.

Grey
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Old 23rd April 2002, 05:37 AM   #8
FBJ is offline FBJ  United States
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Thanks GRollins,
Now I might buy one or two transformers.
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Old 23rd April 2002, 08:03 PM   #9
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Thanks Grey,

I appreciate your help.

Rob
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Old 4th May 2002, 01:08 AM   #10
Thomas is offline Thomas  Denmark
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Uhm, not to ruin anything Grey, but...

I just recieved my 3 x-formers from apex jr today !!!

The primarys on my toroids are:

Brown - Purple
Gray - Blue

Your polarity seems right, though.

Here in DK we have 230V AC, so I wired them like this:

Blue to one leg of AC
grey and purple together
Brown to other leg of AC

This matches standard colour coding for AC in Europe.
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