Help with phase/polarity of transformer

[jakebrown5]

Could someone point out how to wire this transformer for 115V primary, 36V secondary with a center tap? I need +18V, GND, and -18V. The pinout info is at the bottom of page 2.

http://www.advancedcomponents.com/st...df/SSPF043.PDF

Thanks

[Jan Dupont]

Go for the 2x18 V secondary and wire like this;

[wine&dine]

From the data sheet, you seem to have the primary right (3+5 live, 1+7 neutral) but not the secondary since they show a series connection as 12-16 connected (center), 9 / 13 outputs.

jake - you understand that the DC voltage will be 1.4 x AC voltage (full wave rectification, C-input filter) minus diode drops, right? A 2 x 18V AC transformer will get you about +/- 24V DC.

[Jan Dupont]

Thats right..
I just assumed you needed +/-18V (AC)

[jakebrown5]

Yes I needed +/- 18V AC for this circuit: http://www.freeinfosociety.com/elect...iew.php?id=119 .

[Jan Dupont]

Fine
Then just go on as I've showed you in post 2

[jakebrown5]

Great, thank you very much.

-Jake

[Jan Dupont]

[wine&dine]

What I'm saying is that the way I read the data sheet, if you follow ACD's schematic, the outputs will be in phase and that is presumably not what you wanted.

[Jan Dupont]

wine&dine;
You are right... I just made a quick schem and didn't notised the connection of the primary windings