Threshold NS10 Lineamp PCB

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steenoe

steenoe

Member
Joined 2004
DVBjunky said:
Some newbie did messed up the GB List - please guys check your orders.....my name and my ordered pcb are deleted and some other values are changed.
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That usually happens when there are no more vacant lines and a newb is trying to order. Not everyone can find those pesky || lines. Nevertheless, it is pretty annoying.

@ 360 reg-boards now, not bad at all.

:)
 
C

cetoole

Member
Joined 2005
Re: Re: Re: Re: Re: Re: Good News, NS10 group buy

DVBjunky said:
@ CeToole

Thanks. It would be great and you can take your time.....dont rush....I have time :)
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Heck, simulating circuits while listening to some music on my new Piezo headphones, which happen to be older than I am, is much more fun than writing a Comparative Justice term paper. Thus, I present a 5v version of the toolereg, sized for a 50mA load.

discreteshuntreg5v.png


steenoe said:
Colin, did you look into using a LM336-2,5 or LM336-5 for the low voltage versions? There might be some advantage to those and in any case they will be more consistent than different LED's.
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I have not really looked at using reference diodes, but no real reason not to. It would give us a bit of consistency, as the current versions will need to have their voltage trimmed in, especially the LED ones. My LED model has a 1.7v forward voltage, and I have seen ones anywhere from 1.5v-2.1v, though consistency between LEDs of the same model is quite a bit better than that. So, all that said, want me to take a look at using a vref IC for these LV regs?

What they hey, lets kick it up to 410 boards for this group buy. I bet you didnt know what you were getting yourself into when you volunteered for this, eh Dennis? I have run a big PCB group buy before, it isnt much fun.
 
C

cetoole

Member
Joined 2005
Manu said:
Last version of the Raw supply (take #2)


Manu

:)cop: Mod : could you please delete the pic from my post #514 ... as it is the wrong one ... tnx)
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Wait, what? Man, you guys are full of surprises. Trying to control dissipation on the shunt reg input CCS? Dont pre-regulate too close, it works actually a bit better with more voltage drop across the CCS. Of course, that is ripple rejection, and especially with a CLC filter AND a prereg, that really wont be an issue, eh?

Oh yeah, sorry I forgot Tony: feliz cumpleaños, mi amigo.
 
J

jameshillj

Member
Joined 2005
Reg V2 (Dec 7)

'Evening Manu,
If you are going to expand you "raw" supply into a full regulator, could you add a snubber R-C network next to the inductor across the first capacitor C101 - 1/4 w about 470R and MKC about 4nF and if you have some more room left, add another 10nF across both of these - gets rid of diode ringing that is still present even with the u.fast diodes.

If any more room at output (!) add a Carlos snubber there, too to get rid of the LM3xx device noise.

Then, to top it right off, add a second TO220 and incorporate a Gyrator like the Teddy-Reg and we'll call it the Manic-"Raw"Reg! (just kidding!)

Articles about snubbers can be found at TAA 3/94 (yeah, back then!) by Scott Morovich - and follow up discussisn by Jim hagerman TAA 7/95) and much more since. Snubbers DO makes a big difference to the sound for just 2 (or 3) components when you get it right.

Can also fit a Solen PP to the shunt-Reg board (easy available in Eu) altho have found the Jentzens to sound better than either the Rifa, Wima or Solens, but they all do work okay.
 
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