Zen ZV9 power supply

Albertone · 15th November 2006, 01:40 PM

What is the best way to feed the Zen ZV9?? Has anyone a schematic or a PCB to suggest?? Please help me!!

Alain Dupont · 15th November 2006, 04:33 PM

Albertone,

look at the manual of similar Class A amplifiers, example Zen Amp

http://www.passdiy.com/pdf/zenamp.pdf

1 AC connector, a fuse, a transfo {3* times power used!}
choice of 1 or 2 secondaries {1 for each channel is better...}

100 watts for each channel, so: 250 to 300VA for each channel
that's a 300VA, for a monobloc or only 1 * 625VA for a stereo 2 channel

To get 50 volts DC : secondary(s) must provide: 36 volts AC on load to the bridge

And for each channel:
a bridge rectifier 25A/100volts
several capacitors, example 2*10 000microF

Perhaps a fuse for each channel DC, would be safe to protect the bridge(s) and transfo...

Alain.

sts9fan · 6th December 2006, 08:56 PM

Can someone tell me if this transformer will work for this project?

http://www.partsexpress.com/pe/showd...number=122-650

Also I am new at this and a bit confused on how to pick a transformer based on a schematic, If someone could lead me to some guidelines that would be sweet.

Kris

VT67 · 6th December 2006, 09:16 PM

sts9fan

Alain summed it up quite nicely.
Yes that transformer will work with the secondaries wired in parallel. You will end up with a rail voltage somewhere between 46 and 49VDC. One of those per channel is also my advice.

Regards

Alain Dupont · 6th December 2006, 09:20 PM

Kris,

Good choice, this will give you about 49 to 50 volts DC at 2 Amps for each secondary.
You will need 1 for each channel monobloc,
and you put the secondaries in // {parallel}.

regards.

Alain.

sts9fan · 7th December 2006, 02:13 PM

Thanks for the help guys
I would assume that the AN 3236 would work also
http://www.toroid-transformer.com/

VT67 · 7th December 2006, 02:30 PM

Quote:

I would assume that the AN 3236 would work also

Yes. You could also use the AN 3218 with the secondaries wired in series.

Regards

sts9fan · 7th December 2006, 02:33 PM

Is there somewhere I can read about the secondaries of these transformers? I am confused about the differnet configurations and why some would be wires in series and the other in parallel

steenoe · 7th December 2006, 02:34 PM

Quote:

You could also use the AN 3218 with the secondaries wired in series.

I will second that, as an even better choice. It will give you more possibillity's later on. Most of the Passdiy amps can be made with 2x18V secondaries.

Steen

steenoe · 7th December 2006, 02:39 PM

Here is a nice place to start. Just go down the page untill you see the Transformer articles. All the other stuff is also worth reading.
http://sound.westhost.com/articles.htm

Steen

15th November 2006, 01:40 PM	#1
Albertone diyAudio Member Join Date: Sep 2006	Zen ZV9 power supply What is the best way to feed the Zen ZV9?? Has anyone a schematic or a PCB to suggest?? Please help me!!

6th December 2006, 09:16 PM	#4
VT67 diyAudio Member Join Date: Jun 2004 Location: Belgium	sts9fan Alain summed it up quite nicely. Yes that transformer will work with the secondaries wired in parallel. You will end up with a rail voltage somewhere between 46 and 49VDC. One of those per channel is also my advice. Regards __________________ VBITNGC Krell KSA-50 Krell KSA-100MkII

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15th November 2006, 04:33 PM	#2
Alain Dupont diyAudio Member Join Date: Sep 2003 Location: Paris - France	Albertone, look at the manual of similar Class A amplifiers, example Zen Amp http://www.passdiy.com/pdf/zenamp.pdf 1 AC connector, a fuse, a transfo {3* times power used!} choice of 1 or 2 secondaries {1 for each channel is better...} 100 watts for each channel, so: 250 to 300VA for each channel that's a 300VA, for a monobloc or only 1 * 625VA for a stereo 2 channel To get 50 volts DC : secondary(s) must provide: 36 volts AC on load to the bridge And for each channel: a bridge rectifier 25A/100volts several capacitors, example 2*10 000microF Perhaps a fuse for each channel DC, would be safe to protect the bridge(s) and transfo... Alain.

6th December 2006, 08:56 PM	#3
sts9fan diyAudio Member Join Date: Apr 2006 Location: MA	Can someone tell me if this transformer will work for this project? http://www.partsexpress.com/pe/showd...number=122-650 Also I am new at this and a bit confused on how to pick a transformer based on a schematic, If someone could lead me to some guidelines that would be sweet. Kris

6th December 2006, 09:20 PM	#5
Alain Dupont diyAudio Member Join Date: Sep 2003 Location: Paris - France	Kris, Good choice, this will give you about 49 to 50 volts DC at 2 Amps for each secondary. You will need 1 for each channel monobloc, and you put the secondaries in // {parallel}. regards. Alain.

7th December 2006, 02:13 PM	#6
sts9fan diyAudio Member Join Date: Apr 2006 Location: MA	Thanks for the help guys I would assume that the AN 3236 would work also http://www.toroid-transformer.com/

7th December 2006, 02:33 PM	#8
sts9fan diyAudio Member Join Date: Apr 2006 Location: MA	Is there somewhere I can read about the secondaries of these transformers? I am confused about the differnet configurations and why some would be wires in series and the other in parallel

7th December 2006, 02:39 PM	#10
steenoe diyAudio Member Join Date: Mar 2004	Here is a nice place to start. Just go down the page untill you see the Transformer articles. All the other stuff is also worth reading. http://sound.westhost.com/articles.htm Steen