Popular Post 4est Posted September 26, 2018 Popular Post Share Posted September 26, 2018 2 hours ago, the_doc735 said: No offense, but based on my reading of your answer-seeking posts this past month I am not confident that you possess the knowledge or skills to properly—and safely—complete a big 4-rail supply as a DIY project? 1) Are you prepared to choose and size for current and voltage the four transformer AC secondary’s to ensure that the post-diode DC is above the target-regulated voltage enough that even under full-load draw it does not droop to close and fall out of regulation? 2) Moreover, will you optimize the heat sinking and choose high performance thermal pads that will allow for the large dissipation of heat that will be required for each output device? 3) If your secondary voltages run too high (watch what load they were spec’d at because they will be a lot higher under no load), then you will have more heat to manage—and you need to stay in the limits of your output device. 4) How about grounding for safety—both the transformer and the chassis to AC? 5) Moreover, speaking of grounding, will “float” all of your rails? 6) Isolate the DC output jacks from the chassis to preserve that? 7) I had a look at the transformer you linked to and can tell you right away that it is all wrong for your application. ? What are you going to do with two 40V/2.2A secondary’s plus two 15V/0.8A secondary’s? 9) Completely useless [tranny] for an ATX project. I understand a very modest amount about power supplies, but as I am not an engineer either, there a million projects I would not dream of tackling. No offence taken. Many thanks for your opinion. 1) I would need help with this, but I am confident. 2) Yes. 3) I would need help with this, but I am confident. 4) Yes. 5) Help needed 6) Yes. 7) Why? ? Connect them to the 4 ZEROZONE L158-25 LPS boards. 9) Why? The L158-25 boards I would ask for are: 3.3v/5v/12v/12v (for the mini-ITX mobo). I thought the voltage range on that tranny was zero –up to- 40V (x2) & zero –up to- 15V (x2)? On that basis, connecting the 2-12v boards to the 40v outputs & the 3.3v/5v boards connected to the 2-15v outputs. You obviously know that this is not suitable and doesn’t work in this way, therefore a constructive and positive response would be to tell me what tranny is appropriate for use with 4 L158-25 boards? That would be more helpful to me, than simply saying “what I picked is useless!”. I was going to purchase a good quality aluminium chassis with fins on both sides [for heat]. I don’t know the load/amperage requirements for the 4 DC mobo inputs! (i.e. 3.3v/5v/12v/12v). I was hoping that the 2.2A & 0.8A would be sufficient? In addition, the 200W tranny would be enough for the PC at boot up (i.e. the peak requirement)? I also intend no offence to you in anyway. Many thanks for these responses. Take Care. Once again, you do not know enough to know what you don't know. Worse, you are expecting people to spoon feed you all of this... Ralf11, look&listen and Ajax 3 Forrest: Win10 i9 9900KS/GTX1060 HQPlayer4>Win10 NAA DSD>Pavel's DSC2.6>Bent Audio TAP> Parasound JC1>"Naked" Quad ESL63/Tannoy PS350B subs<100Hz Link to comment
Popular Post 4est Posted September 28, 2018 Popular Post Share Posted September 28, 2018 6 hours ago, the_doc735 said: come on! - you are fully aware how many people state that LPSU are best in audio? you do know how many people advocate LPSU for audio? BUT! where are those advocates in this thread? Pity we can't do a pole (vote)? Thanks for your valued input! I do know there are pros and cons for both methods. Because most of those who "know", know there are better/easier methods than to attempt to put in an ATX LPS. Perhaps you should look into what we are doing in entirety, instead of blazing your own trail haphazardly. This is well trodden ground around here, perhaps more so than other forums. the_doc735, look&listen and jabbr 2 1 Forrest: Win10 i9 9900KS/GTX1060 HQPlayer4>Win10 NAA DSD>Pavel's DSC2.6>Bent Audio TAP> Parasound JC1>"Naked" Quad ESL63/Tannoy PS350B subs<100Hz Link to comment
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now