Building power supply for master clock questions

KevinLee · 29th March 2004, 10:08 PM

Hello,

I am going to build a dedicated supply for the new super clock in my NAD C541I.

Is it better to build a regulated supply?

Also, what VA rating should the transformer be?

Thanks

KevinLee

KevinLee · 30th March 2004, 03:39 PM

Hello,

What I had in mind was the following:

-Transformer, bridge, filter caps

or

-Transformer, bridge, filter caps, regulator, more caps.

I suppose a regulated supply is the way to go but I would like a second or third opinion.

Thanks

KevinLee

Peter Daniel · 30th March 2004, 03:45 PM

While unregulated supply may sound better, it may be difficult to obtain accurate voltage.

I can recommend AN8005 regulators from DK. I tried them and they sound very good. Experiment with different caps values, as I found that smaller ones usually sound better. I wouldn't go more than 100u after regulator .

KevinLee · 30th March 2004, 03:58 PM

Hello Peter,

Thanks for the info, I checked DigiKey and the regs are in stock.

Can you help me out and make a suggestion for a transformer from Digikey?

I was thinking of using either 1000uf Nichicon Muse KZ or 3300uf Elna for Audio caps as filter caps and 100uf Blackgate or 100uf Elna Silmic as cap after reg. What do you think would be better?

One final question, for the bridge I have Fairchild fast switching soft recovery diodes, will this be OK in a digital supply or should I use something else?

Thanks

KevinLee

Peter Daniel · 30th March 2004, 04:08 PM

I found that MSR860 (OnSemi) work much better than MUR860 in digital supplies.

All my observations here are with regards to CS8412, but I think it should work similar with a clock.

The best bypass on the chip was BG N. I tried 33u, but it seemed too much; 10u or 4.7 was much better choice.

Those small Tamura transformers (from DK) should be more than enough 12VA (MT11xx).

zygibajt · 30th March 2004, 05:05 PM

Peter ,have you tried Vishay/Telefunken Soft Recovery type
1A/1000V?

Parts Express has them.I just ordered a bunch.
Will compare to MUR860 in my preamp.

Bartek

Peter Daniel · 30th March 2004, 05:10 PM

No, I didn't.

But yesterday I tried adding a second battery to my DAC (one for DAC, one for receiver; 6V) and the improvement in sound was substantial, much better bass (which was already very good), better definition and separation, highly recommended.

KevinLee · 30th March 2004, 05:16 PM

There's an idea,

Should I try the clock of a 6v battery? Or is there a draw back to this?

Thanks

KevinLee

Peter Daniel · 30th March 2004, 07:23 PM

I usually use 5V low drop reg. after the battery and it seems like battery power is always better than AC raw supply (especially with digital). Again, AN8005 is very good here.

zygibajt · 30th March 2004, 09:29 PM

Quote:

Again, AN8005 is very good here

Do you know any other source of these?

Other than Digikey.

Bartek

29th March 2004, 10:08 PM	#1
KevinLee diyAudio Member Join Date: Oct 2002 Location: Winnipeg MB Canada	Building power supply for master clock questions Hello, I am going to build a dedicated supply for the new super clock in my NAD C541I. Is it better to build a regulated supply? Also, what VA rating should the transformer be? Thanks KevinLee

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Clean Master Clock distribution	UV101	Digital Line Level	1	3rd April 2009 07:37 PM
Tapping master clock	habsrock93	Digital Line Level	10	8th November 2008 01:41 AM
How master clock oscillators work	EC8010	Digital Source	22	11th March 2006 01:18 AM
CD master clock	ftp838	Digital Source	38	18th December 2004 10:22 AM
Master clock of Marantz SA8260	hatasa	Digital Source	7	29th January 2004 09:32 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

30th March 2004, 03:39 PM	#2
KevinLee diyAudio Member Join Date: Oct 2002 Location: Winnipeg MB Canada	Hello, What I had in mind was the following: -Transformer, bridge, filter caps or -Transformer, bridge, filter caps, regulator, more caps. I suppose a regulated supply is the way to go but I would like a second or third opinion. Thanks KevinLee

30th March 2004, 03:45 PM	#3
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	While unregulated supply may sound better, it may be difficult to obtain accurate voltage. I can recommend AN8005 regulators from DK. I tried them and they sound very good. Experiment with different caps values, as I found that smaller ones usually sound better. I wouldn't go more than 100u after regulator .

30th March 2004, 03:58 PM	#4
KevinLee diyAudio Member Join Date: Oct 2002 Location: Winnipeg MB Canada	Hello Peter, Thanks for the info, I checked DigiKey and the regs are in stock. Can you help me out and make a suggestion for a transformer from Digikey? I was thinking of using either 1000uf Nichicon Muse KZ or 3300uf Elna for Audio caps as filter caps and 100uf Blackgate or 100uf Elna Silmic as cap after reg. What do you think would be better? One final question, for the bridge I have Fairchild fast switching soft recovery diodes, will this be OK in a digital supply or should I use something else? Thanks KevinLee

30th March 2004, 04:08 PM	#5
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	I found that MSR860 (OnSemi) work much better than MUR860 in digital supplies. All my observations here are with regards to CS8412, but I think it should work similar with a clock. The best bypass on the chip was BG N. I tried 33u, but it seemed too much; 10u or 4.7 was much better choice. Those small Tamura transformers (from DK) should be more than enough 12VA (MT11xx).

30th March 2004, 05:05 PM	#6
zygibajt diyAudio Member Join Date: Jun 2003 Location: Wroclaw	Peter ,have you tried Vishay/Telefunken Soft Recovery type 1A/1000V? Parts Express has them.I just ordered a bunch. Will compare to MUR860 in my preamp. Bartek

30th March 2004, 05:10 PM	#7
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	No, I didn't. But yesterday I tried adding a second battery to my DAC (one for DAC, one for receiver; 6V) and the improvement in sound was substantial, much better bass (which was already very good), better definition and separation, highly recommended.

30th March 2004, 05:16 PM	#8
KevinLee diyAudio Member Join Date: Oct 2002 Location: Winnipeg MB Canada	There's an idea, Should I try the clock of a 6v battery? Or is there a draw back to this? Thanks KevinLee

30th March 2004, 07:23 PM	#9
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	I usually use 5V low drop reg. after the battery and it seems like battery power is always better than AC raw supply (especially with digital). Again, AN8005 is very good here.