0v wire on transformer

impsick · 24th December 2006, 10:32 AM

sorry yall, gotta a stupid newbie question.

im confused a bit on my transformer situation. this is for brians lm3886 pcb.

ok so my torrodal transformer has 3 wires going in. 5 going out. for the secondary orange + orange = 26.5v

and... yellow 18v - 0black - yellow 18v

my question is if im doing a stereo set-up would i run both yellow and orange to psb? and what do i do w/ the blk 0v wire?

sorry for probably the most basic question possible in electronics but im fresh and lost at this point.

oh yeah and why is there 3 going into the transformer? thanks

AndrewT · 24th December 2006, 11:21 AM

Hi,
three in !!!!
Five out is very probable.

You need to check what is IN and OUT and what are connected and what are apparently isolated.

Check again and come back.

Nuuk · 24th December 2006, 12:08 PM

I think he meant improbable! But they start very early on the whiskey in those parts at this time of year!

AndrewT · 24th December 2006, 12:41 PM

five out is very probable.
I meant it.

eg. V-0-V & V-0
or
V1-V2-0-V2-V1
or
V-0 & V-0 & screen.
any of these alternatives are valid outputs.

AndrewT · 24th December 2006, 12:42 PM

Quote:

they start very early on the whiskey in those parts at this time of year

is Irish, Whisky is Scotch or from Scotland.

impsick · 24th December 2006, 12:58 PM

no im very sure that its 3 in (i mean coming from wall socket to torroid), and 5 out.

impsick · 24th December 2006, 01:00 PM

ANDREW,
that makes sense the only thing that throws me off is the blk 0v wire. where does this go?

AndrewT · 24th December 2006, 01:13 PM

tell us what is connected to what.
it is important.

impsick · 24th December 2006, 01:37 PM

well all that i've connected is yellow/orange to ac1, ac1. and yellow/orange to ac2, ac2 on the psb. 0v wire is not connected (yet?).

as for the red,blk,and blue i havent done anything w/. yet

V1-V2-0-V2-V1 only 0 im clueless what to do w/

AndrewT · 24th December 2006, 02:33 PM

I'm on the point of giving up.

Do not attach the transformer to either the mains or your amp until you KNOW that it is connected correctly and that the voltages are correct.

Is orange connected to orange?
Is orange connected to any other?
Is black connected to any or all wires?
Is yellow connected to any other?
etc?

24th December 2006, 10:32 AM	#1
impsick diyAudio Member Join Date: Dec 2006	0v wire on transformer sorry yall, gotta a stupid newbie question. im confused a bit on my transformer situation. this is for brians lm3886 pcb. ok so my torrodal transformer has 3 wires going in. 5 going out. for the secondary orange + orange = 26.5v and... yellow 18v - 0black - yellow 18v my question is if im doing a stereo set-up would i run both yellow and orange to psb? and what do i do w/ the blk 0v wire? sorry for probably the most basic question possible in electronics but im fresh and lost at this point. oh yeah and why is there 3 going into the transformer? thanks __________________ "Nothing happens for a reason. There are just reasons why things happen." Quote me on that. http://stores.ebay.com/AudioGrade?_rdc=1

24th December 2006, 11:21 AM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Hi, three in !!!! Five out is very probable. You need to check what is IN and OUT and what are connected and what are apparently isolated. Check again and come back. __________________ regards Andrew T.

24th December 2006, 12:08 PM	#3
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	I think he meant improbable! But they start very early on the whiskey in those parts at this time of year! __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

24th December 2006, 12:41 PM	#4
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	five out is very probable. I meant it. eg. V-0-V & V-0 or V1-V2-0-V2-V1 or V-0 & V-0 & screen. any of these alternatives are valid outputs. __________________ regards Andrew T.

24th December 2006, 12:58 PM	#6
impsick diyAudio Member Join Date: Dec 2006	no im very sure that its 3 in (i mean coming from wall socket to torroid), and 5 out. __________________ "Nothing happens for a reason. There are just reasons why things happen." Quote me on that. http://stores.ebay.com/AudioGrade?_rdc=1


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24th December 2006, 01:00 PM	#7
impsick diyAudio Member Join Date: Dec 2006	ANDREW, that makes sense the only thing that throws me off is the blk 0v wire. where does this go? __________________ "Nothing happens for a reason. There are just reasons why things happen." Quote me on that. http://stores.ebay.com/AudioGrade?_rdc=1

24th December 2006, 01:13 PM	#8
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	tell us what is connected to what. it is important. __________________ regards Andrew T.

24th December 2006, 01:37 PM	#9
impsick diyAudio Member Join Date: Dec 2006	well all that i've connected is yellow/orange to ac1, ac1. and yellow/orange to ac2, ac2 on the psb. 0v wire is not connected (yet?). as for the red,blk,and blue i havent done anything w/. yet V1-V2-0-V2-V1 only 0 im clueless what to do w/ __________________ "Nothing happens for a reason. There are just reasons why things happen." Quote me on that. http://stores.ebay.com/AudioGrade?_rdc=1

24th December 2006, 02:33 PM	#10
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	I'm on the point of giving up. Do not attach the transformer to either the mains or your amp until you KNOW that it is connected correctly and that the voltages are correct. Is orange connected to orange? Is orange connected to any other? Is black connected to any or all wires? Is yellow connected to any other? etc? __________________ regards Andrew T.

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