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View topic - Japanese SMS question: Will I need a transformer?

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  • Joined: 03 Oct 2021
  • Posts: 3
  • Location: Brazil
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Japanese SMS question: Will I need a transformer?
Post Posted: Sun Oct 03, 2021 6:55 pm
Hello. I purchased a Japanese SMS (not Mark III) online because I wanted the built-in FM Sound Unit, and am currently waiting for it to arrive. I live in Brazil though, so do I need a transformer to make it work here, or will it work fine right off the bat?
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  • Joined: 05 Nov 2014
  • Posts: 395
  • Location: Auckland - NZ
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Post Posted: Mon Oct 04, 2021 4:51 am
Power supply in Japan is 100v and has both 50hz or 60hz depending on the area.

Google suggests Brazil is 127v at 60hz. The voltage might be a little bit high for a power adapter designed for 100v. Normally +/- 10% is ok, but you would be 27% high, which i would suggest avoiding.

Im not sure youll easily get a step down transformer to go from 127v to 100v.

Its probably best to use an existing master system one that you may already have. You can also use a modern replacement power adapter. Its output just needs to be 9v DC, 1A and center negative with a 2.1mm barrel jack.
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  • Joined: 19 Oct 1999
  • Posts: 13880
  • Location: London
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Post Posted: Mon Oct 04, 2021 10:12 am
In general yes, use your local AC adaptor across Sega consoles. It’s best to check the polarity just in case. 9V vs 10V doesn’t matter.
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  • Joined: 03 Oct 2021
  • Posts: 3
  • Location: Brazil
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Post Posted: Tue Oct 05, 2021 6:29 am
I found this. Would it work?

https://produto.mercadolivre.com.br/MLB-1306981300-fonte-master-system-1-e-2-100...
Power Supply.txt (248 B)

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  • Joined: 23 Apr 2014
  • Posts: 126
  • Location: NYC
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Post Posted: Tue Oct 05, 2021 12:38 pm
I strongly recommend using a Triad international power supply instead. They're high quality, have been tested and "approved" by the MDFourier team and have been my go-to for a few years now. FireBrandX put together a nice page showing which PSU works with each console: http://www.firebrandx.com/triads.html
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  • Joined: 19 Oct 1999
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Post Posted: Tue Oct 05, 2021 8:18 pm
That Brazilian power supply with a DIN plug looks like a great way to fry something... for most of the world, the SMS has a barrel plug for power.
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  • Joined: 03 Oct 2021
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  • Location: Brazil
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Post Posted: Sun Oct 17, 2021 5:49 am
What about this one?
link.txt (250 B)

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