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
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
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
Re: Just Want More Clear Understanding
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.
thomasfw said:
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.
Thanks, Nelson
I etched 4 boards yesterday, and will try and stuff two of them today. The boards are really cute I will post a pic, when I get home. The MPS4250, will have to wait a bit though. Maybe I will just throw in a substitute, to start with.BTW, that link you posted is great, Tony. There is also projects you can build
Steen.
NS10 PSU schematics
Hi Steenoe
First of all I´d like to say thanks to all people: Russ, Steenoe, Apassgear, Chocky, et alli who are contribuiting to this project. I have a BOZ playing for some years and would like to try a new preamp and this seems very promissing.
Is there a NS10 PSU schematic around I´missing? What could be the trafo VA rating?
Thanks in advance,
JC
Hi Steenoe
steenoe said:
Yep, let them PDF's come rollin'
Have a look
Russ, thanks a lot for all your work on this
Steen.
First of all I´d like to say thanks to all people: Russ, Steenoe, Apassgear, Chocky, et alli who are contribuiting to this project. I have a BOZ playing for some years and would like to try a new preamp and this seems very promissing.
Is there a NS10 PSU schematic around I´missing? What could be the trafo VA rating?
Thanks in advance,
JC
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