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Old 21st November 2005, 11:04 AM   #101
steenoe is offline steenoe  Denmark
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Quote:
Interested?
Thanks for the offer, Brian. I just checked with my normal supplier, he has some of the sk30's. I also had some sk389, sk369 and the sk170 Lucky enough, he still had a few of those devices. (But not anymore, I bought his stock )

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Old 21st November 2005, 11:08 AM   #102
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http://www.dalbani.co.uk/catalogue/p...ls.php?id=6658

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Old 21st November 2005, 12:36 PM   #103
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Default Just Want More Clear Understanding

Dear All,

As NS10 has so much good recomendations/reviews and classificed as a "State Of Art".

Why we do not build with the NS10 original design ?

Where I can find the "Part List" for original design ?

Thanks !

Thomas
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Old 21st November 2005, 12:47 PM   #104
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Hi,

I actually have designed two PCBs, one for a prototype split rail version (which is the one everyone has seen so far).

The other follows the single supply (original) schematic.

They should (as far as I can tell) actually be very close to eachother in terms of performance. I would actually expect more from the split rail version. But I don't know a dang thing about this, so don't you dare listen to me.

I will post it if you like.

Cheers!
Russ
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Old 21st November 2005, 12:53 PM   #105
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Many thanks if you could post it !

best Regards !


Thomas
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Old 21st November 2005, 03:06 PM   #106
steenoe is offline steenoe  Denmark
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Quote:
Why we do not build with the NS10 original design ?
Everyone is welcome to tune in, Thomas
As for the partslist for the original, I really would like to see that too. Since the partslist didn't surface yet, I doubt it will. For now, there will be some guesswork involved no matter if you build the dualrail supply or the singlerail supply.

Steen
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Old 21st November 2005, 03:51 PM   #107
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Default Re: Just Want More Clear Understanding

Quote:
Originally posted by thomasfw
Dear All,

As NS10 has so much good recomendations/reviews and classificed as a "State Of Art".

Why we do not build with the NS10 original design ?

Where I can find the "Part List" for original design ?

Thanks !

Thomas
Nelson, the Master, did post the topology of the circuit, he does not have the original schematic.

The post shows a single rail without resistor values using MPS6571 for Q1 and Q3 and 2N4250 for Q2. Then Nelson tipped a replacement for Q1/Q3 would be a MPSA18. I checked on the last one and it is an almost identical replacement from On-semi with better voltage ratings.

From my point of view a single or double rail wont make a difference but of course the selection of active devices will sound different.

Tom (tmblack?) on his last post on this thread said he tried a JFET for Q1 but he was back to a JBT because it sounded more neutral to him. Have a look to his posting to read his own words.
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Old 21st November 2005, 04:03 PM   #108
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Quote:
Originally posted by tmblack
Apassgear

my last iteration was back to NS10 original design with schematic already posted.

You can try JFET or even VMOS as Q1 but I think BJT is neutral sounding for me.

Tom

EE

here it is
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Old 21st November 2005, 04:18 PM   #109
steenoe is offline steenoe  Denmark
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Q1/Q3 would be a MPSA18.
Any suggestion for Q2? MPSA18 doesnt have a pnp "sister". What about MPSA92?

Steen.
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Old 21st November 2005, 05:47 PM   #110
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Default OFF TOPIC

Take a look to these resources

http://www.101science.com/transistor.htm
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