TX help for GC

yuval · 5th April 2004, 03:44 AM

hi all,

I want to build monoblocks, I found this nice TXs:
http://www.rsisrael.com/cgi-bin/bv/s...quickSubmit=Go
all the TXs are 25VX2 no 25VX1, may I (and how) use it anyway ? What VA value to choose ?

thanks, Yuval

yuval · 5th April 2004, 07:56 AM

part # 223-8831 in RS ( www.rswww.com )

Nuuk · 5th April 2004, 08:03 AM

I would suggest using a transformer with 18 volt secondaries (223-2285).

To wire up one of these transformers you will need to know the colour coding of the wires which should come on the packaging (box).

Twin secondaries are ideal as it gives you the opportinity to use either one or two recfifier bridges.

You may find it helpful to read more about this on the

Decibel Dungeon FAQ pages .

yuval · 5th April 2004, 08:19 AM

OK ... so if I get it right, I need to short one pair of 0v-18v and use the other one to connect to rectifier bridge ?

Ropie · 5th April 2004, 08:22 AM

That's right

yuval · 5th April 2004, 08:31 AM

thanks!

Nuuk · 5th April 2004, 03:43 PM

Quote:

OK ... so if I get it right, I need to short one pair of 0v-18v and use the other one to connect to rectifier bridge ?

That's wrong!

yuval · 5th April 2004, 04:38 PM

oops...
I meant, I take the 0v from one pair and the 18v from the second pair - somthing like this ? does it make sense ?

----18--------------- to recfifier
---0-----|
----18--|
---0----------------- to recfifier

Ropie · 5th April 2004, 07:41 PM

That's right, infact, that's what I thought you meant the first time. The centre 'pair' are connected, as you've drawn.

Nuuk · 5th April 2004, 09:14 PM

Agreed

5th April 2004, 03:44 AM	#1
yuval diyAudio Member Join Date: Oct 2002 Location: israel	TX help for GC hi all, I want to build monoblocks, I found this nice TXs: http://www.rsisrael.com/cgi-bin/bv/s...quickSubmit=Go all the TXs are 25VX2 no 25VX1, may I (and how) use it anyway ? What VA value to choose ? thanks, Yuval

5th April 2004, 08:03 AM	#3
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	I would suggest using a transformer with 18 volt secondaries (223-2285). To wire up one of these transformers you will need to know the colour coding of the wires which should come on the packaging (box). Twin secondaries are ideal as it gives you the opportinity to use either one or two recfifier bridges. You may find it helpful to read more about this on the Decibel Dungeon FAQ pages . __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

5th April 2004, 09:14 PM	#10
Nuuk diyAudio Member Join Date: Feb 2003 Location: Somerset, SW England	Agreed __________________ The truth need not be veiled, for it veils itself from the eyes of the ignorant.

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5th April 2004, 07:56 AM	#2
yuval diyAudio Member Join Date: Oct 2002 Location: israel	part # 223-8831 in RS ( www.rswww.com )

5th April 2004, 08:19 AM	#4
yuval diyAudio Member Join Date: Oct 2002 Location: israel	OK ... so if I get it right, I need to short one pair of 0v-18v and use the other one to connect to rectifier bridge ?

5th April 2004, 08:22 AM	#5
Ropie diyAudio Member Join Date: Jul 2003 Location: SW London	That's right

5th April 2004, 08:31 AM	#6
yuval diyAudio Member Join Date: Oct 2002 Location: israel	thanks!

5th April 2004, 04:38 PM	#8
yuval diyAudio Member Join Date: Oct 2002 Location: israel	oops... I meant, I take the 0v from one pair and the 18v from the second pair - somthing like this ? does it make sense ? ----18--------------- to recfifier ---0-----\| ----18--\| ---0----------------- to recfifier

5th April 2004, 07:41 PM	#9
Ropie diyAudio Member Join Date: Jul 2003 Location: SW London	That's right, infact, that's what I thought you meant the first time. The centre 'pair' are connected, as you've drawn.

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