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Pc Engine Duo - 10V 1A PSU


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Hey guys,

 

Looking to replace my 110V PC Engine Duo PSU with a 240V one, simply so I can free up a plug on my step down converter. The PC Engine Duo PSU is 10V 1A and I cannot for the life of me find a PSU that can do this voltage and amperage. I have found plenty of 9V and 12V at that amperage or above, but no 10V. Any ideas? I just want to buy one of the cheapie Jaycar adjustable PSUs, like this one.

 

http://www.jaycar.com.au/Power-Products-Electrical/Plugpacks/DC-Output/12W-3---12VDC-Switchmode-Plugpack-with-USB-Outlet/p/MP3312

 

However, as you can see, you can only adjust the voltage to 9V or 12V, with no 10V in between.

 

Thanks for any assistance.

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Definitely one of the more sucky ones Nama. I might have a spare one, but as the house is getting termite sprayed I won't be able to look for it until next week at some point (remind me if you haven't found another solution).
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Thanks Hollo, you got me the Duo in the first place :) I have found one online that says it's for a DUO and accepts 100V-240V, so I could just use a socket converter. However, it says it's 9V not 10V, so I am assuming it is advertised incorrectly.

 

http://www.ebay.com.au/itm/AC-DC-Power-Supply-Adapter-for-pc-engine-DUO-console-and-Super-CD-Rom2-console-/111859135168?hash=item1a0b52f2c0:g:BXkAAOSw37tWAr~9

 

EDIT: Multiple places online suggest that a 9V PSU will work, but I am not game to try. Does anyone have a PC Engine DUO who can confirm this? The ebay link above also sells the same PSU on their website below, listed as a DUO PSU, not a DUO-R or DUO-RX.

 

http://gamedoctorhk.com/index.php?main_page=product_info&cPath=69&products_id=816&zenid=bo17gbu9dtm8bm06do7tlrgus1

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Duo R, Just make sure you double check the polarity of the interchangeable connectors if you go down this path and don't cheap out get a 2 amp + model. I can't remember the specific ratings I just know I had one that was around 1 amp and bought one that was around 2.5 amp for the duo, works great on the Model 1 Megadrive and Mega CD too.

 

As far as I know the Duo R and RX are exactly the same except RX had the 6 button controller?

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Open her up and see if there's a voltage regulator close to the DC jack (follow the traces on the PCB). Something like a 7805 would probably be there. The PCB is likely to run off 5V, the 7805 will convert the DC voltage from a plug pack to 5V.

 

This site suggests it does use a 7805: http://console5.com/wiki/Turbo_Duo

 

A 7805 will run on 9V DC. Wiki says minimum 7.3V (https://en.wikipedia.org/wiki/78xx)

 

 

For info, I use one of these power supplies for some of my consoles: http://www.jaycar.com.au/PRODUCTS/Power-Products-Electrical/Plugpacks/DC-Output/Switchmode-Plugpack-9VDC-3A-7-Plug/p/MP3496

 

I've wired up a loom with DC jacks in parallel which connects to: Megadrive + MegaCD, NES, Super Famicom. One power pack and switch on the powerboard will power these three. I could probably power all on at once (given 3A supply) although I never would as they're connected to the same TV. You could just connect each singularly as required if you wanted to keep it simple. Just need to ensure the polarity is correct. The NES isn't picky as it usually takes AC power.

 

- - - Updated - - -

 

Oh, just to add:

 

http://www.famicomworld.com/forum/index.php?topic=6933.0 suggests that the Super Famicom originally comes with a 10V DC supply also.

 

As mentioned above I run mine on a 9V supply as it uses a 7805 inside, no problems.

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I've been reading similar things, that a 9V is fine. I can't open it up right now, as the console is in at work. Let's say I hook up a 9V PSU that has the correct polarity and amperage. Could I potentially damage the console if shit goes wrong? I know overvolting a console will kill it outright, but I do not know what undervolting it could do. The Duo is one of the priciest consoles I own, so I do not want it to die on me.
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The 7805 takes up to 15V I think, so you'd have to overvolt by a huge amount to kill it. Even then, I'd think damage would be limited to the 7805.

 

It's recommended to run the minimum voltage required by the voltage regulator to convert to 5V, as any additional voltage is dissipated as heat.

 

All electronics are made with tolerance. You'll be fine with 9V. In fact, if anything, your voltage reg in theory will last longer! Haha.

 

 

 

The 7805 spec sheet (http://www.engineersgarage.com/sites/default/files/7805.pdf) indicates a dropout voltage of 2V. This means you need 7V minimum for the 7805 to successfully regulate the output to 5V. If you stick to a regulated or switchmode 9V adapter, you'll be fine.

Edited by lordsnipe
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Yeah, I used that site to confirm it was 10V. Still, a lot of people saying that 9V will be fine. I have a 9V 1.5A PSU I could test it with, provided it has the correct fitting in the swappable tips. Still need to work up the guts to do it though, if I killed my Duo, I'd need to have a little cry.
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