Does this sound like a good idea?

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SNKFreak

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I'm thinking up another idea to throw into my "Turn an MVS board into a console" projets. I've managed to fit everything except a power supply inside the metal casing. Well I was wondering, if it's a good idea to builda tiny 5V and 12V PSU (get parts from gool ol radio shack) and fit that in the board. DOes this sound like a good idea, or do I risk blowing up another one of my boards?

[ November 18, 2002: Message edited by: SNKFreak ]</p>
 
BIG BEAR

BIG BEAR

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Why not??? It's all educational but rather than destroy a PCB,use your meters to run tests...
I believe there was a page on the internet where this guy placed a 2 slot in see-thru
plexiglas housing modeled after the NGH with an external power supply.He also made some see-thru plexiglas joysticks as well but they appeared to be very..very fragile..
Anybody remember that?? It looked really cool! I save the pic along time ago but my HD crashed before I had the opportunity to back it up :(
-BB
 
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Winston Goh

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Hi!
I have saw some power adaptor that resemble a laptop adaptor that come with a din plug. It has 5V 12V and -5V at abt 3-10AMP, rather expensive but it could serve as your psu.
 
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edgemaster

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It's great to see your mod coming along...

I just measured the current of the +5v and +12v lines running to my 6 slot board.

It seems that the wattage is much lower than I thought. (I am running my 6 slot with a couple of light bulbs in some switches and the PCB is full of games)

Using Wattage=Voltage*Current (P=V*i) I worked out the +5v line pulls 19Watts of power and flows at 3.8 Amps

The +12v line pulls almost 1Watt of power and flows at 0.083 Amps

Could someone please confirm this as I am not too sure it is correct :-/

If this is true I guess you could get away with quite a low power PSU?
 
ttooddddyy

ttooddddyy

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I measured about 5 amps drawn from the 5 volt rail on the six slot boards, I think its around the same on the other boards
 
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edgemaster

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Thanx ttooddddyy for that info :-)

That would mean 25-30Watt PSU should power the board ok then?

I am just thinking aloud here for the sake of SNKfreak, I would hate him to have an under rated PSU for his project.
 
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Winston Goh

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Originally posted by SNKFreak:
<strong>CAn you give me the dimensions?</strong><hr></blockquote>

You mean the adaptor? Abt 4 inch by 2 inch, height is abt 1 inch.

I try and get the exact spec and the usage the next time I go to that electonic store.
Click to expand...
 
MKL

MKL

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I've recently bought a 4-slot I intend to turn into my own version of !Arcade!'s Shadow4. I was aware that the multi-slots didn't draw that huge amount of current most people seem to assume. Note that the Shadow4 is not powered by an arcade psu but by a small home psu. I've seen that Netgear makes a +5v 5A supply for some PC hub/switch: that would be perfect, although I'm not going to put it inside the mobo.
JHendrix claims that if you get sound from the headphone connector you don't need +12v (see his web page). I haven't checked that myself yet but if it's correct then that +5v psu would be enough to power the board. We'll see.
 
D

Devilman78

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Results are going to vary depending on the cart used, older carts will show about 1A draw on the board.

Newer games will draw like 2-4 times higher, depending on cart.

I do not have exact numbers, but someone can check that out for themself.
 
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apus

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Hi,

tested with Garou/MS-X, my 2-Slot use a current value of 1.4A.

bye apus
 
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