100V Japanese to US

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By gdx

Prophet (2979)

gdx's picture

27-05-2019, 02:13

wyrdwad wrote:

I've heard this said before, but I live in eastern Japan right now, and all our power in 60 Hz. Same was true when I lived in Japan before, 16 years ago.

No, Japan's electrical frequency is still 50 Hz in the east and 60 Hz in the west.

https://www.kepco.co.jp/brand/for_kids/teach/2016_03/detail1...

https://www.ene100.jp/%E6%9D%B1%E8%A5%BF%E3%81%AE%E9%9B%BB%E...

By wyrdwad

Paladin (787)

wyrdwad's picture

27-05-2019, 02:41

gdx wrote:
wyrdwad wrote:

I've heard this said before, but I live in eastern Japan right now, and all our power in 60 Hz. Same was true when I lived in Japan before, 16 years ago.

No, Japan's electrical frequency is still 50 Hz in the east and 60 Hz in the west.

https://www.kepco.co.jp/brand/for_kids/teach/2016_03/detail1...

https://www.ene100.jp/%E6%9D%B1%E8%A5%BF%E3%81%AE%E9%9B%BB%E5%8A%9B%E8%9E%8D%E9%80%9A%E3%81%A8%E5%91%A8%E6%B3%A2%E6%95%B0%E5%A4%89%E6%8F%9B

Hmm. Maybe I'm getting confused, then -- I thought that if the power grid were 50 Hz, games would run at 50 Hz speeds, with reduced music and movement speeds (like playing MSX games on PAL systems). But that's not the case. All games I play on my MSX run at the proper NTSC speeds, which is why I assumed the power grid was 60 Hz.

I guess the two are independent of one another?

-Tom

By gdx

Prophet (2979)

gdx's picture

27-05-2019, 02:48

wyrdwad][quote=gdx wrote:

I guess the two are independent of one another?

Yes, both are independent.

By wyrdwad

Paladin (787)

wyrdwad's picture

27-05-2019, 03:23

Interesting. I'm... not sure how that works, but I'm curious to look into it now!

For the TC, though, this is nothing to worry about. You can either plug the MSX directly into any normal outlet in the U.S., or use a step-down power converter to convert the 120v power supply to 100v just to be safe (which is what I did the entire time I was in the U.S.). You don't need to worry about the Hz at all, it seems.

My step-down power converter cost me about $50. And now that I live in Japan, it's kind of going to waste back at my parents' house in the U.S., but I guess it'll be good to have if I go back home to visit and bring any Japanese electronics of note with me. Wink

-Tom

By janghang

Expert (115)

janghang's picture

27-05-2019, 03:42

I live in the us, and I am using a Japanese MSX directly plugging it into a normal outlet. I have used it for 10 years like this. It works without any problem. If you feel it is dangerous, Buy a 100 to 110V transformer.

By wyrdwad

Paladin (787)

wyrdwad's picture

27-05-2019, 05:40

Er, yeah, that was my mistake -- I meant "step-up power converter," not "step-down."

But yes, there should be no problems just plugging the MSX in directly. I'm just paranoid. Wink

-Tom

By gdx

Prophet (2979)

gdx's picture

27-05-2019, 16:35

janghang wrote:

I live in the us, and I am using a Japanese MSX directly plugging it into a normal outlet. I have used it for 10 years like this. It works without any problem.

I remember someone had said exactly the same thing before in forums, then now his MSX is down because he left it on for a long time, but it was perhaps a coincidence.

By Grauw

Ascended (8395)

Grauw's picture

27-05-2019, 17:20

wyrdwad wrote:
Grauw wrote:

Actually Japan's power net has both 50 Hz (east, including Tokyo) and 60 Hz (west).

I've heard this said before, but I live in eastern Japan right now, and all our power in 60 Hz. Same was true when I lived in Japan before, 16 years ago.

I think it's only older households that use 50 Hz power -- and I don't think there are many of them left.

-Tom

That image was taken straight from Kepco, The Kansai Electric Power Company :).

https://www.kepco.co.jp/english/home/denki/01.html

I think the different TV display frequency standards were historically related to the power net frequency, but it’s not the case anymore for a long time already. Which is why our European TVs also rarely have trouble showing a 60 Hz image through RGB. I think in Japan many appliances were designed for both 50/60 Hz (as you will see on the bottom of your Japanese MSX) so that they could be sold country-wide. According to that link though, washing machines and microwave ovens usually aren’t compatible.

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