Another question about current

I have another question in my neverending hunt to build a supergun to handle enough current for my 6-slot MVS.

Since it's really hard to find connectors rated for such high currents I was wondering if I could take the +5 from the power supply split it across 3 or so pins on a DIN connector then rejoin those 3 pins inside the supergun? If the mobo was eating 9 amps would those 9 amps be evenly distributed across the 3 pins?

Something like PSU-----E 3----Supergun----MVS
With 'E' being a male DIN connector and '3' being a female DIN.

Is this good or bad or am I just crazy or something?
I'd also gladly accept a good website that could explain it.
Everything I found had resistors in the way, but then taking out resistors made this appear to be a bad idea, or I'm understanding things wrong.
My electronics knowledge is a bit rusty.

The more points you can spread it across the better, it will produce less heat in one spot.

What gauge wire are you going to be using?

I was planning on 18gauge.

After talking to people at work they don't think it would work to split and rejoin 3 wires and expect the current to be evenly divided among the wires.
I guess it would take the path of least resistance...which is really any of the wires, and it would all end up traveling down one wire anyway.

Another idea we thought of is using an AC cord to get the power from the psu enclosure to the supergun. One wire for +5, +12 and GND.

I was planning to get this power supply: http://www.happcontrols.com/powersupplies/80021000.htm

I want to put it in an enclosure so I can use it to power the supergun, or perhaps something else in the future if need be. I guess the downside to the AC cable is I won't have a lead for the -5V if I ever end up with a board that needs it.

I have 18 gauge stranded 4 conductor cable if you need some, let me know how long you need. I can sell it to you for what I paid which was $1.50/ft.

It's the same cable I used for the Boss Supergun PSU:

Sounds tempting....I'll let you know what I decide. How much do you have? I was thinking if I needed some I'd need a foot or two, just to be on the safe side.

What kind of connectors are on that one you have there?
They look nice!

They are 5 pin din plugs. I had to shave the end to fit the cable through with a unibit.

I think I have about 15-20 feet.

Coolness, but after pondering my design some more I don't think I'll need the 4 conductor cable.

What I think i might try is using some of those JST connectors I got awhile back and send across 4 wires with +5, and a +12, -5 and however many pins I have left will be GND.

I guess there's no real need to rejoin any of the wires on the supergun side since I'll just send those wires straight on to the edge connector.

In a normal arcade machine would all four +5V JAMMA pins go into the one +5V connector on the power supply?

I saw some 4 pos kycon connectors rated 7.5A at 20VDC, so I emailed them to ask if it would work to send +12V, -5V, GND, and +5V @15 amps, and he said that wouldn't work.

I guess I'm really hung up on this whole current thing...don't want to torch anything:P

I want to plan this next supergun out a bit better so it's more flexible, and so I don't have to keep placing orders for more parts all the time:P

buaku said:

In a normal arcade machine would all four +5V JAMMA pins go into the one +5V connector on the power supply?

Click to expand...

Yes.

buaku said:

I saw some 4 pos kycon connectors rated 7.5A at 20VDC, so I emailed them to ask if it would work to send +12V, -5V, GND, and +5V @15 amps, and he said that wouldn't work.

Click to expand...

They should work. If you worded it that way to him then yes he would say no to you since it sounds like +12v@15A is needed.

+20V@7.5A is 150 watts which more than enough since the most you would be passing is +5v@15A which is only 75 watts.

Agreed with Xian Xi. And furthermore I though the exact same thing as the Kycon seller probably did when I first read your post. Remember to calculate your power!

- TGM

I worded it a little something like this:

"...what I'd ultimately like to do is use one pin to be able to handle +5V DC up to 15A, one pin to handle -5V DC at 1A one pin to handle +12V DC at 4A and finally one pin to handle ground."

I guess I also ordered some DIN's in the past that I just found. Pretty sure Xian Xi mentioned them in some post, but I have...
http://mouser.com/ProductDetail/Switchcraft/62GB8FX/?qs=iwvYsH9bSFZQBA2BSuAOJA==
http://mouser.com/ProductDetail/Kobiconn/171-0278/?qs=BrYybdsH%2bj8ltUMSl/HBjg==

And here's the kycon part I was looking at
http://mouser.com/ProductDetail/Kycon/KPJX-PM-4S/?qs=sGAEpiMZZMu2f9RNbWupYsfuB8r7cVTcoPvJLU/Pb3s=

TheGreenMachine: It's been quite awhile since I've had an electronics class. Sometimes I wish I would have become a EE or something :P Or at least taken more of those classes.