Gainclone tranformer

rmcelroy · 07:51 PM

Just for goobs like me. A link to simplyfy life. Looks like a good place to start-if anyone sees a problem please correct me.

Avel Y236651 250VA 18V+18V Toroidal Transformer | Parts-Express.com

tangmonster · 12th August 2010, 06:34 AM

Are you going to run a 4 ohm load?

That one is fine for a 4ohm load even on the safe side.
For an 8 ohm load you can go with higher voltage one like 25v+25V ac

rmcelroy · 12th August 2010, 01:57 PM

Thanks Tang-I do have 8ohm horns.

Trying to learn here.
Regie

rmcelroy · 12th August 2010, 05:51 PM

Quote:

Originally Posted by rmcelroy

Thanks Tang-I do have 8ohm horns.

Trying to learn here.
Regie

8ohm version
Avel Y236652 250VA 25V+25V Toroidal Transformer | Parts-Express.com

4ohm version
Avel Y236651 250VA 18V+18V Toroidal Transformer | Parts-Express.com

tangmonster · 13th August 2010, 08:29 AM

I would then go for the 250VA 25 + 25V transformer to get +-35V DC
If you horn is VERY efficient then the +-35V dc might be overkill but it can't do any damage except if your heat sink is too small.

But if you ever want to use this amplifier on 4ohm loads you need to use the 18 + 18V ac transformer.

gszekeres1 · 18th August 2010, 04:07 PM

When you mix and match, don't forget about using two transformers to
add voltages. Two 18 + 18 can form a 36 + 36 system. Series arrangement.
You can also parallel transformers, but check to see if the voltages are in
fact identical.

11th August 2010, 07:41 PM	#1
rmcelroy diyAudio Member Join Date: Aug 2009 Location: Birmingham, Al	Gainclone tranformer Just for goobs like me. A link to simplyfy life. Looks like a good place to start-if anyone sees a problem please correct me. Avel Y236651 250VA 18V+18V Toroidal Transformer \| Parts-Express.com Last edited by rmcelroy; 11th August 2010 at 07:51 PM.

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12th August 2010, 06:34 AM	#2
tangmonster diyAudio Member Join Date: Jul 2007 Location: Cape Town	Are you going to run a 4 ohm load? That one is fine for a 4ohm load even on the safe side. For an 8 ohm load you can go with higher voltage one like 25v+25V ac

12th August 2010, 01:57 PM	#3
rmcelroy diyAudio Member Join Date: Aug 2009 Location: Birmingham, Al	Thanks Tang-I do have 8ohm horns. Trying to learn here. Regie

13th August 2010, 08:29 AM	#5
tangmonster diyAudio Member Join Date: Jul 2007 Location: Cape Town	I would then go for the 250VA 25 + 25V transformer to get +-35V DC If you horn is VERY efficient then the +-35V dc might be overkill but it can't do any damage except if your heat sink is too small. But if you ever want to use this amplifier on 4ohm loads you need to use the 18 + 18V ac transformer.

18th August 2010, 04:07 PM	#6
gszekeres1 diyAudio Member Join Date: Aug 2010 Location: near Pittsburgh	When you mix and match, don't forget about using two transformers to add voltages. Two 18 + 18 can form a 36 + 36 system. Series arrangement. You can also parallel transformers, but check to see if the voltages are in fact identical.

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