Building a cab... How much power do I need?

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I'm building a little Neo-Geo cabinet and am trying to figure out how big of a power supply I need. Here is what I have and how much power it needs:

2.0A 12v for Monitor
1.5A 12v for Audio Amp
0.7A 12v for CCFL Marquee Light
0.5A 12v for 2 80mm Case Fans
1.0A 12v for PCB

3.0A 5v for PCB
2.0A 5v for CGA2VGA Board
0.5A 5v for A Few Button LEDs

So do I just add everything together and look for a power supply that can output 5.7A 12v and 5.5A 5v? What would happen if I run a power supply only rated at 4A 12v?
 
Nor is your marquee lamp... AC vs DC... I'd also recommend you consider a 110-120v fan vs a 12v computer model... but that's just preference.
 
+1 what they said...

Since you are running a CGA to VGA converter, I assume you are planning to use a VGA monitor. In that case, you won't need an Isolation transformer to power it....just plug in direct 110-120v. Your light ballast should also not require an ISO and should also just take direct 110-120v

That said, it sounds like all you need is an inexpensive switching power supply.

If you plan use a CGA arcade monitor, you WILL need a separate Isolation transformer to power the monitor, but again from what I gathered from your post, you aren't going that route.
 
You just need a standard switching power supply. Somebody here on klov can hook you up with one or check out jammaboards.com or any other arcade website has them too.

Monitor & Marquee light like people mentioned runs off AC power
 
That monitor will not run on 12v, dude. See on the page you linked where it says "External type, 110 ~ 220 VAC"?
 
That monitor will not run on 12v, dude. See on the page you linked where it says "External type, 110 ~ 220 VAC"?

It says:

External type, 110 ~ 220 VAC at 50 or 60 Hz via
AC adapter (12V), 12V DC Output,
Adapter size : 108(W)x64(H)x30Dmm

And on the adapter it says it outputs 12v 2A. But I don't want to use the adapter, I don't have space in the cabinet for it. Like I said in the first post... I'm building a little Neo-Geo cab
 
Not really recommended to use a different power adapter than what it comes with but i guess it could be rigged. The regular power supplies won't have enough amps to power all of that but the beefier computer style ones will. If you need an example look on suzohapp.com under power supplies. It tells you the amp rating for each voltage on their supplies.
 
Not really recommended to use a different power adapter than what it comes with but i guess it could be rigged. The regular power supplies won't have enough amps to power all of that but the beefier computer style ones will. If you need an example look on suzohapp.com under power supplies. It tells you the amp rating for each voltage on their supplies.

Yea I was looking at this one in particular: http://na.suzohapp.com/powersupplies/80021000.htm. Also found that my PCB can be run without the 12v so I'm down to around 4.7A on the 12v rail. Think I can get away with it?
 
Why in the heck would you WANT to run a monitor on 12v? Especially an expensive monitor. You DO realize you can get a 15" PC LCD for just about free, de-case it, then you're golden? Why not just run it on AC?
 
First $400 for a 15" LCD monitor? Crazy.

Second, LCD sucks for low res games (neo geo is low res)

Third, you can get a better 23-24" LCD monitor from tigerdirect.com for just over $100.
 
First $400 for a 15" LCD monitor? Crazy.

Second, LCD sucks for low res games (neo geo is low res)

Third, you can get a better 23-24" LCD monitor from tigerdirect.com for just over $100.

First, can you even find a 15" LCD monitor for sale much less one with an included bezel?

Second, If you can point me in the direction of a source that is selling some new 14-15" CRT monitors with CGA or VGA inputs I'd appreciate it

Third, If it could fit in a space 16" wide x 13" high I'd go for it, but if I were to hacksaw off the top and sides of the monitor to make it fit I think it would stop working!

You really don't need an audio amp....

If you run 12v to the pcb.

The MV1C does not output amplified stereo on the jamma edge. You can pick off line level from the audio chip on the PCB and run it into a separate amplifier, which is what I'm going to do.


I did find out that the CCFL marquee lights don't like to be run on a taxed power supply. They start to flicker. So I had to remove them and get a separate T5 flourscent light running on AC. Probably for the best, 1 12" T5 bulb is brighter than 2 15" CCFL bulbs anyways
 
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First, can you even find a 15" LCD monitor for sale much less one with an included bezel?

Second, If you can point me in the direction of a source that is selling some new 14-15" CRT monitors with CGA or VGA inputs I'd appreciate it


I did find out that the CCFL marquee lights don't like to be run on a taxed power supply. They start to flicker. So I had to remove them and get a separate T5 flourscent light running on AC. Probably for the best, 1 12" T5 bulb is brighter than 2 15" CCFL bulbs anyways

It sounds like you are over-complicating things which is why you are getting the kind of responses you are. These guys are just trying to help you save some cash to achieve the same results you are going for. Most of us are "tight wads" as it were and find any way possible to reduce costs on anything we do.

A 15" LCD monitor can be picked up for $6 at your local thrift store. If you are using a CGA to VGA converter, there is no need for CGA inputs on the monitor. I've seen pro "arcade" LCD monitors in action and they look no different than a cheap used VGA lcd monitor. You can also pick up bezels separately for LCDs or easily craft your own for a few bucks.
A new light ballast running on 110 will cost a meager $14 at most at your local Lowes, Home Depot, Menards, or even Wal-Mart.
And a simple $9 set of powered computer speakers can be hacked to provide more than enough amplification for what you intend to use it for.

If your pockets are endless, go ahead and dish out the $300 for a CGA lcd monitor, buy an expensive advanced power supply and invest in an expensive audio amp and speakers. It's your dime :)

Like I said though...if you want suggestions to save you money, that is what everyone who has responded to this post is trying to do for you ;)
 
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Sounds like he's building a Bar top game. 12v will work on the LCD. The majority of LCD screen power supplies only produce 12v going to the main board, ccfl invertor, they will often times have just a 12 jack at the bottom of the monitor you can plug into.

The 15" models are getting harder to find new since the new min size is like 20"


You could get something like this to handle all your 12v

http://search.digikey.com/us/en/products/GLC110-212G/271-2301-ND/1036554
 
I saw at least a dozen 15" lcds at our local Goodwill today for $6 each. They tend to stay on the shelf longer as they are no longer desirable as computer monitors. I'd guess if you took a trip to your local thrift store you'd find the same...

I actually started picking up cheap 19" non-wide LCDs and CRTs over the past few months specifically for backups if my monitors start going out. It's nice to have something to put in the games until I find reasonably priced CGAs to replace them or while working on chassis.
 
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