Mastero MK-4.5 250w 12v DC-DC ATX PSU + SDC - Page 3

Mastero · 08-04-2004, 12:43 PM

Quote: Originally Posted by MrPerfectionest

Has the supply been tested fully loaded, ie. with all rails delivering their rated current for X amount of time?

I have not tested the PSU .. been busy ..

Sent the prototype PCB for making shall test it this week.

Please check if you find any erorrs in the design.

measures 170mm x 110mm (just 25mm more than mk-4 in width)

as for the low batt shutdown no space .. maybe in the next version.

Cheers
Mastero

MatrixPC · 08-05-2004, 12:48 AM

Mastero, Great work. My only question is will the Sproggy relay support that much power? The highest I can find is 12A or 16A. Unless you are using a different one than those of previous version.

Mastero · 08-05-2004, 04:43 AM

Good point matrix .. Will check it out. anything else

Mastero

Quattro · 08-09-2004, 05:25 PM

Mastero, any idea when the next version will be out. I'm starting my project now and still new a power supply. Also any idea what the price might?
Thanks.

darkhalo · 08-09-2004, 05:47 PM

nice work mastero!!

Will there be a kit for this version?

Eternalightwith · 08-12-2004, 12:55 PM

Maestro,

Could you post a parts list for the 4.5 PSU? I can't speak for others, but I find it very hard to make out all the parts and numbers from the pcb graphic.

David

Mastero · 08-13-2004, 02:59 AM

shall make one soon ...! Shall have a kit for this version also

Cheers
Mastero

Eternalightwith · 08-23-2004, 10:49 AM

I don't need the kit, just the partslist. I like building the project myself. Already got the PCB making stuff and all the relevant links I'll need.
Thank you for the great work.

David

Eternalightwith · 08-28-2004, 08:50 PM

I made my own list of parts. I doublechecked it for omissions but I could have missed a part or two. It has all the chips you need to order though.

David

P.S. Maestro, could I use vertical Inductors versus the horizontal ones you have in your PCB layout? I was thinking vertical might get a little more airflow.

Mastero · 08-29-2004, 07:36 AM

You can use any as long as its as per the specs

Mastero

Eternalightwith · 09-04-2004, 04:14 PM

I have all the supplies I need to make the PSU and I was wondering if you got the chance to test it out? LIke was there any errors or whatnot? Shouldd I wait till version 2 comes out with the addon functions?

David

Mastero · 09-04-2004, 04:21 PM

no i didnot test it ... but since you have all the part build it i m sure you wont have a problem ..

Mastero

Eternalightwith · 09-06-2004, 02:58 PM

I printed out the circuit as it came from the document. I see the circuit is a mirror image, ie. the lettering is the flipped vert. and hort.

I'm assuming I lay the transparency on the copper board so that the writing is the correct orientation. ie. you can read it normally.

So I'm just double checking, do I place it on the board for exposure, normal or mirrored image.?

David

MrPerfectionest · 09-06-2004, 03:21 PM

It depends on what type of pcb you have. Is it positive or negative sensitized?

Eternalightwith · 09-06-2004, 03:24 PM

positive sensitized.

David

P.S. On the transparency printout, all the traces are black and the lettering is black. I wasn't referring to flipping the black for whites, and visa versa, but I understand how you would if the photoresist was negative sensitized.