Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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RE: Need some electrical help.

Posted by jea48 (A) on November 5, 2016 at 22:00:53

In Reply to: RE: Need some electrical help. posted by MannyE on November 5, 2016 at 13:28:55:

That is pretty close to the order you suggested, but different enough that I'm concerned.

What the picture shows is the primary has two windings. 2 X 115Vac
Winding 1) Blu-Gry leads

Winding 2) Vio-Brn leads

For a 115Vac feed input you parallel the two winding together. THEY MUST be paralleled together in phase with one another or they will buck each other like two Bull Moose butting heads.

Blu and Vio tie, connect, together. The Hot wire from the IEC connector connects here.
(If you are not using an on/off power switch and the Blu and Vio leads are long enough you could connect and solder them directly to the IEC connector Hot Line terminal)

Gry and Brn tie, connect, together. The white neutral from the IEC connector connects here.
(If the Gry and Brn leads are long enough you could connect and solder them directly to the neutral terminal on the IEC connector)

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My previous post:

You said in your post.
for input connections 115VAC blue to vio and gry to brn APPLY TO blu and brn.

Primary is a dual winding.

For 115Vac

Tie the blue wire to the vio wire. > Connect the hot fused AC Line to this pair.

Tie the gry wire to the brn wire. > Connect the AC Line white neutral wire to this pair.

There is no difference.

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That's a weird looking IEC connector.

If you look at the picture you will see where it says LOAD.
Then below LOAD you see P1 ..... PE ..... N1

Strange markings. What country was that thing made for?

I think,
P1 = L, the fused Hot wire.
PE = Earth ground, the safety equipment ground.
N1 = N, the neutral white wire.

If that thing were mine I would check the continuity of the thing to make sure. Is it a 15 amp IEC connector?

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I get 15v AC from the transformer. Then put into the power supply which then makes the 15v AC into 15 V DC and I can listen to records. Is that correct?

Actually the unloaded DC output voltage will be slightly higher 15Vdc. I forget the formula.

Follow Stereojim post for the secondary winding configuration hook-up.

Double check, triple check, the winding configuration connections before you plug the transformer into the wall receptacle.

DO NOT connect the transformer to the circuit board/s until you first bench test the output voltage of the transformer. It should measure 15Vac.

Edits: 11/05/16

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