Power Supply for Squeezebox Touch

[Noskipallwd]

Interesting idea with the Sheevaplug or Goflex, is that 128GB drive big enough? I find with my High Res music files take up lots of real estate.

Yeah, unfortunately it's all I can afford at this time, I went with the Goflex so I can dock a 1TB esata drive and store files on it as well. Squeezeplug will work with esata but I will most likely rotate files on and off the ssd for playback.

Cheers,
Shawn

[Lar]

Finished product, Grainger, i used some heat shrink at the tranny points close to the box to keep the sparks down.

[Noskipallwd]

Lar, how does it sound installed, any improvement?

Cheers,
Shawn

[InfernoSTi]

Lar,  that looks very clean...nice work!  Everything else is stock, right?  I, too, am interested if you are hearing any sound quality changes.  John

[Lar]

I have not had much time to do any critical listening, but i will, i have noticed a quieter back ground , but that i`m sure would be system dependent. And yes the Squeezebox is stock.

[John Roman]

Hey Lee,
How you doin? Thanks for the Glassware site. Have you experimented with any of their stuff ? I've toyed with the idea of having a variable voltage power supply, be nice for test and experimenting.
Regards,
John

[Lar]

I have enjoyed the results of the LV - Regulator power supply i decided to make it a big brother and built this John Swenson designed power supply, so far sounding very good.

[Noskipallwd]

That is great Lar, you get alot of satisfaction out of building your own gear! Where did you get the plans for Johns design? I changed my set up for the SBT, I bought a vortexbox appliance, which I converted to fanless, added 3 more gb of ram, replaced thie internal hd with a 60gb ssd, and set up an external 2 drive raid for the file storage ( 2 480 gb solid state hds), when I build a mac mini based server I'll use the raid because it can also connect to esata. Again, great job on the ps.

Cheers,
Shawn

[Lar]

Yes it is a lot of fun building this stuff, and thanks. Page 2 of this thread, post 127 from Grufti has the schematic of John`s design. How do you like the vortexbox?

[Noskipallwd]

So far I am liking the vortexbox, if you have alot of cds or dvds that need to be ripped it is perfect. I was originally going to build my own mini pc and install vortexbox but after buying memory the HDs and performing an ISO install of the vortexbox os (fedora linux based), I decided to buy the appliance and modify it for my own uses. The first night I had it I ripped 65 CDs to flac without any issue. Most took 3-5 minutes, but there were a couple that were damaged enough that the cd paranoia error correction took about 20 min. to complete. I don't like it's tagging structure for classical so I am ripping all of those using Max, XLD under OSX and dbpoweramp under windows. The appliance uses very little power, so leaving it on 24/7 is not a problem and it came with LMS already installed.

Cheers,
Shawn

[Jim R.]

Anybody out there feel like doing me a huge favor and translating the schematic for the swenson power supply into words for me?

I just bought a sb touch and will send it to Bolder Cable for analog mods, will then tweak with the soundcheck 3.0 tookit, but also want to build a killer psu for it.

Does it look easy to slightly change the output voltage of this design -- say from 5.0 to 5.7 or 5.8?  I have a bybee music rail I may want to try in it later and that eats up about .7-.8v itself.

Thanks,

Jim

[Grainger49]

Jim,

If you mean the schematic posted on the previous page by Lar, I can do that.  The regulation comes from an LT1084, a fixed 5V three pin regulator.  A variable regulator can be substituted and you can dial in the voltage you want. 

[Jim R.]

Thanks, Grainger, and yes, that's the one.  Please, if I may ask, include all parts designations such as type, size, series, etc. -- according to Hans, the types of caps are important too, as is I suppose just about everything else.

Thanks much,

Jim

[2wo]

I will give it a go.

Transformer, Triad VPS10-2500. Across the Secondary, is a stubber consisting of a .022uf cap  in series with a 330 ohm resistor.

To a full wave bridge, STM STPS20120D is the listed diode.

 Next is a CLC filter. All caps are  Panasonic, 35V.

 120uf, FC
 10mh, Hammond 159 ZJ
 10000uf, TSHA.

This feeds a 3 pin LT1084 regulator. The input has a 470uf, FM, essentially in parallel with the 10000uf cap, just closer. P3 (input) to P1 (ground).

Then another 470Uf , FM. From the output (P2) to ground, (P1)       

[Jim R.]

John and Grainger,

Thank you both very much!  You guys rock!  Seems simple enough but the  devil is in the details.  Just wondering why such a monster of a bridge -- maybe diodes are less noisy when used at far lower than their rated current?

I may even have a nice split-bobbin transformer I can sub.  I may even have 90% of these parts on-hand.

Anybody know the O.D. and I.D. for the DC barrell connector for the Touch?

Thanks much -- love this forum!

-- Jim