linear regulator after pico or seperate power supply?

[Tomslin]

No, in both cases. I have been doing this with batteries for many years.

[Tomslin]

8 hours ago, the_doc735 said:

...don't suppose you know what amperage I need for the 8pin ATX CPU & I2s card?

 

I do know they both need 12V.

 

CPU will be 35W 'T' model

 

Measure with a DC clamp meter for to have exact values. Better than speculating.

 

8 hours ago, the_doc735 said:

If you still use 24 pin ATX mobo, how do you power it, if you're not using a pico?

 

See here: http://jplay.eu/forum/index.php?/topic/1979-rebuild-and-improved-power-supply-for-a-singlepc/?p=33317

 

8 hours ago, the_doc735 said:

Lastly, do you happen to know if the 12v source on the pico's PASS STRAIGHT THROUGH to the mobo (without processing)?

 

many thanks!

 

It does not really matter if it pass straight through to the CPU slot or not. Because the CPU can (and will) anyway contaminate power to the rest of motherboard, because it is the only power feed. This is also a disadvantage with the pico, in my opinion. Having the CPU feed separately is always an advantage, with or without pico.

 

[Tomslin]

Clamp meters are quite large for a wide area of work. They are also suitable for electronics as long as they are not about measuring directly on PCB (circuit boards), ie as long as you have wire. I can’t see any problem to use it for your purpose.

It’s only yellow, red and orange who feed main power to the motherboard. Black is negative/common for all, and the other colors are for control voltages. So it can actually work well with four power feeds/rails including one for the CPU.

Pretty sure that voltage gets split up in that way you describe, generally at least. But more separation with different power feeds are better in my opinion. For the same reason, I think that motherboards with 24-pin ATX power slots are better than these with only one main power feed. But if you choose to use pico there instead, the differences will decrease again.

[Tomslin]

9 hours ago, the_doc735 said:

 

 

I can see you have mirrored the image to the right to make it graphically fit with the image on the left, which is the corresponding female connector seen from the underside. The first time I saw this picture, I think; “what a hell is that!!” I recognized my old picture, but it seemed damn strange until I revealed your photoshopping

9 hours ago, the_doc735 said:

 

...so do you have 3, 4, or 5 seperate feeds (or do you split some of them (e.g. 1 feed into 2)?

1) 3.3v default

2) 5v default

3) 5v standby

4) 12v default

5) 12v CPU

 

...PRESUME: -12, -5, PS-ON, PG are not critical feeds?

 

what's the ripple/noise level on your current PSU/Batteries?

 

many thanks!

I still maintain that I have four feeds in total including the CPU. 5V SB is not a separate feed, it is rather a control voltage to keep some parts on the motherboard with constantly power. Mostly it works just as well without. 5V SB will not draw any current.

Ripple/noise level on my current battery setup is definitely nothing I’m worried about. I would be surprised if it even is measurable.

5 hours ago, the_doc735 said:

what is the function of: -12, -5, PS-ON, & PG, on the 24 pin moby ATX socket/plug?

thanks!

Exactly how the ATX power supply standard work can you read about on Wikipedia, for example. Google it. I will not even try to explain this here and now

4 hours ago, the_doc735 said:

@Tomslin

Is the PPA CF to SATA adapter with KingSpec 16GB SLC CF with seperate LPSU,  'better' for audio than a M.2. NVMe SSD? (e.g. Samsung 250GB 960 M.2 (2280)  Evo PCIe 3.0 (x4) NVMe 3D V-NAND SSD MZ-V6E250BW)?

Sorry, but I have not done that comparison so I can’t tell anything about it.

[Tomslin]

11 hours ago, Tomslin said:

I can see you have mirrored the image to the right to make it graphically fit with the image on the left, which is the corresponding female connector seen from the underside.

Wrote a little wrong there ... On the contrary, it should be, of course

[Tomslin]

2 hours ago, the_doc735 said:

Contrary to this though:

@Dev    said:

 

"I had a small discussion with Paul Pang and he thinks that a pico will work just fine. Incidentally, two other well known psu companies, Uptone & Mojo audio believes the same." Also, Sean Jacobs is firmly in agreement with this opinion; and Teddy Pardo won't say 'either-way'?

 

However, in Tomslin's case, he believes that a pico is not so well suited and it has no place in Hi-Fi, in his opinion.

 

So, take your pick? (LOL).

 

And here you do a nice turn to restart the debate, right? Do you really want to discuss this to absurdity?

40 minutes ago, TubeMan said:

"I had a small discussion with Paul Pang and he thinks that a pico will work just fine."

of course it will  works !,

 

but how will its sounds compare to Full LPS power supply

Exactly! That is where we have the dividing line. I have not heard anyone who actually compared the full rail ATX LPS and Pico side by side and have said that Pico sounds better.

[Tomslin]

1 hour ago, the_doc735 said:

"Do you really want to discuss this to absurdity?"

 

No, I'm just simply stating a fact that there are opinions on both/all sides of a debate, and it's not offensive or rude in any way! People have the right to decide there own verdict based upon the cases "for & against" (i.e. the prosecution & the defence) the argument. If people want to add comments to this thread, they are quite welcome to do so in my opinion and I will read from a neutral point of view. Be that pico, or no pico. Thanks for asking!

 

B.T.W. Tomslin, you have given me a lot of help, cheers!

Yes, of course, I agree with yours statement here. But I start to believe my help is more useful in this (yours) debate here than it's helpful in your own decision (ie pico or not). However, I wish you good luck! Thanks for me.

[Tomslin]

13 hours ago, the_doc735 said:

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story9&reid=207

PicoPSU 120-WI-25 works with 19V input using the FSP power brick. "Ripple suppression: Once again, there's no ripple on the +3.3V and +5V, but also the +12V is cleaned up significantly. Score here is a 10/10."  ~ Wow! Two jonnyGURU Recommended's in one day! Once again, the FSP power brick shows that it's the best power brick... and I like what the PicoPSU 120-WI-25 can do with it.

This is “old junk” that is not even relevant in this context. I mean, if your “debate” here really are about the best possible power supply for a computer, ie for best possible audio reproduction. And this article has nothing to do with that. It's even written on page 1 under introduction: "The popularity of mini-ITX continues to grow as people build media centers and in car entertainment systems that don't require as much power as a standard, full sized ATX computer needs, and doesn't have the room to accommodate a full sized ATX power supply". But I guess you just saw many fine ripple values, which seems to interest you the most, though it in the reality are quite uninteresting.

If you are really interested in creating a really good computer system for the best possible audio reproduction, I recommend that you read this. It’s very well written and focuses on what really is important.

https://www.pursuitperfectsystem.com/building-the-ultimate-music-server---hardware.html

[Tomslin]

9 hours ago, the_doc735 said:

If you say you have a good solution, you are obliged to explain why it is 'good'. (Obviously).

Strange standpoint imo. Possibly I'll do it if I'm going to sell something (for money). But this is just a discussion forum and everything is free.

[Tomslin]

I explain one thing, you say "thanks" as answer. I explain next, again "thanks". and so it keep on and it's fully accepted. When "the barrel is full", you will drop all content again and start over. I'm not sure if you do not want or can understand. But honestly, I don't care either.