My Take on Threshold NS10

[Russ White]

And here is the corrected layout.

 

[Russ White]

Single Side Layout Take II

for +/-25V supply:

 

[Zen Mod]

 

[steenoe]

Single Side Layout Take II

Russ, thats pretty neat. Cant help thinking, if I had a PDF I would etch a couple right away

Steen.

 

[jacco vermeulen]

Steen,
you're a mind reader.

Goodlooking boards, Russ.

 

[Russ White]

PDFs

Thanks guys, you are very kind. Always glad to share.

Here you go!

Note I changed the PCB a bit. I used actual traces for the GND return traces instead of a copper pour.

Cheers!
Russ

Here is the copper side, it is not reversed.

 

[Russ White]

component side

Here is the component side.

It is reversed for toner transfer.

 

[steenoe]

Thanks a lot Russ, most kind of you
What is the excact measure of the board?

Steen

 

[Russ White]

No problem Steenoe.

The PCBs are 2.1250" x 2.4500"

Cheers!
Russ

 

[Russ White]

Here is the schematic - cleaned up.

Cheers!
Russ

 

[sdman]

NS10 Rail voltage?

What was the voltage for the original single rail NS10?

thanks

sdman

 

[apassgear]

Russ,

It would be a nice touch if you could squeeze in a small cap at each rail, say 1000u @ 35V on the board, similar at what you did on the xbosoz.

 

[Russ White]

Russ,

It would be a nice touch if you could squeeze in a small cap at each rail, say 1000u @ 35V on the board, similar at what you did on the xbosoz.

Ok, no problem, fighting a production work issue here, give me a couple hours.

 

[Russ White]

Hi all, there is an error around Q2 on the PDFs. Do not use them I will post fixed PDFs shortly with Tony's bypass caps added.

Sorry if any of you started etching already. a fix is easy, just use a sharpy to make a trace to the positive rail, or if you already etched, just make a wire jumper or solder bridge to the positive rail.

Sorry, should have looked closer before posting.

 

[Russ White]

Fixed copper side

New PCB size is 2.175" x 2.45"

Here is the corrected copper side with Tony's bypass caps:

 

[Russ White]

Corrected component side

Mirrored for toner transfer.

Notice I added pads for alternative cap sizes.

I also move some resistors to space them for easier soldering. Less risk of solder bridge.

 

[apassgear]

Thanks Russ.

For some reason C1 seems small for a bpt maybe ok for jfet, can someone chip in with some insight?

 

[Russ White]

Hmmm its the standard TO-92 package.

 

[steenoe]

For some reason C1 seems small for a bpt maybe ok for jfet

Yes, I noticed that too. I would have preffered at least 1uF for C1. Also C2 being an electrolytic isn't excactly my cup of tea. Maybe a Black Gate NP would be in order

Steen

 

[Russ White]

Yes, I noticed that too. I would have preffered at least 1uF for C1. Also C2 being an electrolytic isn't excactly my cup of tea. Maybe a Black Gate NP would be in order

Steen

I used the values lumanauw provided. But that is a 15mm spot, so I know I could find at least 1uf MKP to fit, and even 2uf MKT.

Values given should be looked at as guidlines.

I have not even built one yet, so I have no idea how it will work.

Hopefull one of you folks can fill me in.