wiring two transformers to two dual rectifer units

larryg · 12th February 2009, 07:15 PM

I'm using the 3886 from chipamps.com. I have two transformers
(dual primary-dual secondary-24v) I have two rectifer boards(each have two rectifers), and two amp boards. I'm not sure how to wire these. Better to ask for help. Can someone provide help?
Thanks, larryg

Atilla · 13th February 2009, 12:14 PM

Each transformer will power one rectifier board. Get one transformer's secondaries and wire one pair to the AC1 pads and the second pair to the AC2 pads on the power supply board. Those are the holes between the diodes.

The transformer should have markings for which the secondary wires are. For example, mine are marked Red+Green and Brown+Blue. So in my case - red and green go to the AC1 holes on the left side of the board and brown and blue go to the AC2 holes to the right side of the PSU board.

The primary windings are connected either in series or paralel depending on the mains voltage. What is yours - 115V or 230V ?

snknby123 · 13th February 2009, 01:11 PM

what type and MD of transformers are you using?

larryg · 13th February 2009, 03:34 PM

Hi Atilla, the main Ac is 117 (U.S.)

Hi snknby123, my trans are toridal, made by Toroid. They are 100 VA.

Thanks for your help, larryg

snknby123 · 13th February 2009, 04:38 PM

looking at their website now. What's the actual Model Number (MD) or just link the data sheet so we can see it.

larryg · 13th February 2009, 04:49 PM

The model # is: 711.242.
Thanks, larryg

wakibaki · 13th February 2009, 05:01 PM

2 rectifier boards. Link?

w

larryg · 13th February 2009, 05:09 PM

Hi wakibaki, I have two rectifier boards. Each have two rectifiers.
I got these from chipamp.com--(BrianGT)
Thanks, larryg

snknby123 · 13th February 2009, 05:18 PM

I thought the minimum was around 160VA? 100VA is pretty low isn't it? May strain the transformer...

Here is the link to the data sheet.
http://www.toroid.com/standard_trans...711.242_M4.pdf[/URL]

Someone with more experience correct me if I'm wrong but it looks like white/orange will go to AC Neutral and Black/Yellow will go to AC Hot.

As far as secondaries looks like brown/red for AC1 and orange/yellow for AC2.

Let someone else chime in to confirm b4 hooking it up.

-BB

larryg · 13th February 2009, 05:32 PM

Hi snknby123, would two 100va equal one 200va?Each channel
its own transformer.
Thanks, larryg

12th February 2009, 07:15 PM	#1
larryg diyAudio Member Join Date: Feb 2004 Location: cary,n.c.	wiring two transformers to two dual rectifer units I'm using the 3886 from chipamps.com. I have two transformers (dual primary-dual secondary-24v) I have two rectifer boards(each have two rectifers), and two amp boards. I'm not sure how to wire these. Better to ask for help. Can someone provide help? Thanks, larryg __________________ larryg

13th February 2009, 03:34 PM	#4
larryg diyAudio Member Join Date: Feb 2004 Location: cary,n.c.	mains ac transformer Hi Atilla, the main Ac is 117 (U.S.) Hi snknby123, my trans are toridal, made by Toroid. They are 100 VA. Thanks for your help, larryg __________________ larryg

13th February 2009, 04:49 PM	#6
larryg diyAudio Member Join Date: Feb 2004 Location: cary,n.c.	model # The model # is: 711.242. Thanks, larryg __________________ larryg

13th February 2009, 05:09 PM	#8
larryg diyAudio Member Join Date: Feb 2004 Location: cary,n.c.	rectifiers Hi wakibaki, I have two rectifier boards. Each have two rectifiers. I got these from chipamp.com--(BrianGT) Thanks, larryg __________________ larryg

13th February 2009, 05:32 PM	#10
larryg diyAudio Member Join Date: Feb 2004 Location: cary,n.c.	volt amps Hi snknby123, would two 100va equal one 200va?Each channel its own transformer. Thanks, larryg __________________ larryg


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13th February 2009, 12:14 PM	#2
Atilla Soldering Gun Fanatic diyAudio Member Join Date: Jul 2008	Each transformer will power one rectifier board. Get one transformer's secondaries and wire one pair to the AC1 pads and the second pair to the AC2 pads on the power supply board. Those are the holes between the diodes. The transformer should have markings for which the secondary wires are. For example, mine are marked Red+Green and Brown+Blue. So in my case - red and green go to the AC1 holes on the left side of the board and brown and blue go to the AC2 holes to the right side of the PSU board. The primary windings are connected either in series or paralel depending on the mains voltage. What is yours - 115V or 230V ?

13th February 2009, 01:11 PM	#3
snknby123 diyAudio Member Join Date: Aug 2006	what type and MD of transformers are you using?

13th February 2009, 04:38 PM	#5
snknby123 diyAudio Member Join Date: Aug 2006	looking at their website now. What's the actual Model Number (MD) or just link the data sheet so we can see it.

13th February 2009, 05:01 PM	#7
wakibaki Banned Join Date: Jan 2008 Blog Entries: 2	2 rectifier boards. Link? w

13th February 2009, 05:18 PM	#9
snknby123 diyAudio Member Join Date: Aug 2006	I thought the minimum was around 160VA? 100VA is pretty low isn't it? May strain the transformer... Here is the link to the data sheet. http://www.toroid.com/standard_trans...711.242_M4.pdf[/URL] Someone with more experience correct me if I'm wrong but it looks like white/orange will go to AC Neutral and Black/Yellow will go to AC Hot. As far as secondaries looks like brown/red for AC1 and orange/yellow for AC2. Let someone else chime in to confirm b4 hooking it up. -BB

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