JVS PSU

Arcade cabinet hardware and accessories
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erzane
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JVS PSU

Post by erzane »

Actually I have a SWN-7N PSU (12v, 5v, -5v) since only play 15k games:
https://www.tops-game.jp/products/detai ... ct_id=2609
Yesterday I found an SWN JVS model (12v, 5v, 3.3v). I like it since it has some connectors instead of screws to hook the wires:
https://www.tops-game.jp/products/detai ... ct_id=2610
As I see there are only positive voltages: 2x 5v (V1?), 2x 12v (V2?), 1x 3.3v (V3?) and a lot of GNDs but no -5.5v anymore. Is this JVS PSU ok for my 15k jamma boards?
Thanks!!
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nem
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Re: JVS PSU

Post by nem »

erzane wrote: October 25th, 2019, 3:52 pmIs this JVS PSU ok for my 15k jamma boards?
For anything that doesn't use -5V, yes.

If you have any older Taito boards, those use -5V for audio.
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erzane
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Re: JVS PSU

Post by erzane »

Maybe a game like Kiki kaikai would use -5v for audio?
Is there a list somewhere with those games?
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nem
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Re: JVS PSU

Post by nem »

The Kiki Kaikai manual does mention -5V, so it's possible the board uses it.
erzane wrote: October 25th, 2019, 5:52 pmIs there a list somewhere with those games?
Unfortunately no.
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erzane
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Re: JVS PSU

Post by erzane »

Thanks
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dj_johnnyg
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Re: JVS PSU

Post by dj_johnnyg »

You can build a simple voltage inverter circuit. Feed +5v in, and you get -5v out.
I have one attached to my JAMMA>JVS converter which works nicely, as the -5v is generally low current.

I probably have some units knocking around, but shipping would be $$$.

Found a schematic, which looks similar to what I used.

7660-circuit.gif
Cut off pins 1, 6 & 7.
Solder a cap (in the correct orientation) between pins 2 & 4.
Solder a cap (in the correct orientation) between pins 5 & 3, and connect a ground wire to pin 3
Slam +5v into Pin 8, get -5v out of Pin 5.
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erzane
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Re: JVS PSU

Post by erzane »

dj_johnnyg wrote: November 7th, 2019, 3:47 am You can build a simple voltage inverter circuit. Feed +5v in, and you get -5v out.
I have one attached to my JAMMA>JVS converter which works nicely, as the -5v is generally low current.

I probably have some units knocking around, but shipping would be $$$.

Found a schematic, which looks similar to what I used.


7660-circuit.gif

Cut off pins 1, 6 & 7.
Solder a cap (in the correct orientation) between pins 2 & 4.
Solder a cap (in the correct orientation) between pins 5 & 3, and connect a ground wire to pin 3
Slam +5v into Pin 8, get -5v out of Pin 5.
Can you show me how you did it? A pic of your unit?
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dj_johnnyg
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Re: JVS PSU

Post by dj_johnnyg »

Sorry, didn't get a notification for this.

I can't show you the PCB, as that is encased in adhesive heat-shrink. For the JVS, I just soldered to the +5v and Ground, then soldered to one of the (unused) -5V pins on the JAMMA connector.
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