Basic Power supply wiring question

viewsonix

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I have these two parts below, that I want to place in a stripped cab for a jamma harness.

How do I wire these two together correctly?
 

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Well, you've got a switcher and an Atari power brick... so you're probably not going to be using the Atari ARII. Which means you'll only be using the Atari brick for it's isolation transformer. Just supply the Atari brick with power from the power cord, and pick off the isolated AC from pins 10 and 15 on the large rectangular connector to go to the monitor. You'll also need to wire a jumper between pins 12 and 13 of that connector. You can pull fuses 2, 3, 4, 5, and 6, those voltages won't be used. As for the switcher, just supply it with 120vAC from the wall, and connect your Jamma harness to it.

-Ian
 
Well, you've got a switcher and an Atari power brick... so you're probably not going to be using the Atari ARII. Which means you'll only be using the Atari brick for it's isolation transformer. Just supply the Atari brick with power from the power cord, and pick off the isolated AC from pins 10 and 15 on the large rectangular connector to go to the monitor. You'll also need to wire a jumper between pins 12 and 13 of that connector. You can pull fuses 2, 3, 4, 5, and 6, those voltages won't be used. As for the switcher, just supply it with 120vAC from the wall, and connect your Jamma harness to it.

-Ian

Ok let me see if I understand this.
The power brick is only used for the isolation transformer and as the place where the AC power cord plugs in.
The monitor is going to be powered from a couple of lines from the large white molex connector on the power brick.
The jamma harness is going to plug into the switcher/peter chou box.
But what wires go from the power brick to the switcher/peter chou box?
 
But what wires go from the power brick to the switcher/peter chou box?

None, really. Both the Atari power brick and the switcher only take 120vAC input. The Atari brick will be used only as an isolation transformer to power the monitor, and the switcher would be your game's DC power supply.

Now, to make things neat, you can use the 120vAC output socket on the Atari brick (intended for the marquee light) to power the switcher - it's the three pin socket on the top, and it's not isolated (so don't use it for the monitor).

One thing I forgot to mention is that you'll need to either wire in interlock switches or add some jumpers to the Atari brick - That would be on J2. (Pin 1 to 4, and pin 2 to 5)

For reference, look at the schematic package for any Atari game and you'll see the whole wiring diagram of those bricks. For example, page six of the Pole Position schematic package. Wiring it up is very straightforward.

-Ian
 
Honestly? SELL the Atari power brick. Make it go to a game that actually needs it.

What chassis is the monitor? If it's new enough (i.e. doesn't need to be isolated) you might be set already. If not, you can pick up an iso, cheap. Any old 60Hz 1:1 transformer will do.
 
I'd sell the brick but this sucker is heavy as hell.
I have some old transformers that I got from a decaying cab, but I have no idea if they work or not.
 
Honestly? SELL the Atari power brick. Make it go to a game that actually needs it.

What chassis is the monitor? If it's new enough (i.e. doesn't need to be isolated) you might be set already. If not, you can pick up an iso, cheap. Any old 60Hz 1:1 transformer will do.

But why waste time trying to sell something common (and heavy) like an Atari brick, only to buy a replacement for roughly what the Atari brick is worth, all when he could just use the Atari brick and be done with it? It's really simple to wire it up.

If his monitor is one of the recent ones that doesn't need isolation, then yes, you don't need an isolation transformer. But, chances are, it's a standard monitor - most monitors need isoation. I don't even think I own one that doesn't, and I have lots of monitors.

-Ian
 
Well, you've got a switcher and an Atari power brick... so you're probably not going to be using the Atari ARII. Which means you'll only be using the Atari brick for it's isolation transformer. Just supply the Atari brick with power from the power cord, and pick off the isolated AC from pins 10 and 15 on the large rectangular connector to go to the monitor. You'll also need to wire a jumper between pins 12 and 13 of that connector. You can pull fuses 2, 3, 4, 5, and 6, those voltages won't be used. As for the switcher, just supply it with 120vAC from the wall, and connect your Jamma harness to it.

-Ian

Note that this procedure won't work if it's an Asteroids or Lunar Lander power brick. (Maybe others, I'm not sure.) Those don't have any 1:1 output that I'm aware of.

But on raster (and color-vector?) bricks, that'll do it.

Oh, and you'll also need jumpers (or your power switch) on the interlock connector (J2, pin 1 to 4, 2 to 5).
And you can grab 120V for your switcher from J4.
 
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Note that this procedure won't work if it's an Asteroids or Lunar Lander power brick. (Maybe others, I'm not sure.) Those don't have any 1:1 output that I'm aware of.

This is a very good point. The black and white vector bricks are different. I think the color raster and color vector bricks are the same though, there's two 60v windings there (hence the jumper between pins).

-Ian
 
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