Famicom AC-Adapter and General Power F.A.Q.

[number47]

supersonicmario0770 this will every where. It takes anything between 100-240V AC

[Elrinth]

this thread is pretty messy so I'm gonna ask my question here in the end
What Power is required for AV Famicom? Does 7.5V work or is it 9V?

[chowder]

The official specs say 10V, 850mA.  9V will be fine, just make sure the plug is centre pin negative.

[HokusaiXL]

Yeah, anything between 7.5 to 15 volts is fine.  7 volts is the usual dropout voltage of the 7805, just make sure the output is DC and like said above, Center pin negative.

[famifan]

Yeah, anything between 7.5 to 15 volts is fine.

well, i cannot disagree more. 15V is fine according to the absolute maximum rating for the most of 7805 ICs. So it's actually *fine*.

However, the higher the input voltage the higher the power dissipation occures on 7805 just because 7805 itself is linear voltage regulator. Bad thing is that famicom doesn't have enough room to fit thermal interface for 7805 which will dissipate even few W of energy.

even if famicom itself consumes roughly ~300 mA (it may vary, depending on what ICs cartridge has got) it means that 7805 will produce ~4.5W of heat for 15V input (or 3W for 10V input.) That's way too much for built-in thermal interface. I doubt if it can effectively dissipate 2W

So, what will actually happen when you run your famicom from 15V? I'd guess the thermal shutdown of 7805 will occurs 

[mfm]

After using a newer switching DC 9V PSU instead of an old Sega Megadrive 1 220V PSU, I noticed that my AV Famicom is barely warm. Using the MD1 adapter it would be warm and even the cartridge would be warm.

I planned to check out how many volts the MD1 PSU gave under load but never got around to doing it, but checked another one recently and that gave 14V unloaded... not so good. I have several MD1 PSUs that I used for SNES, SFC, PCE etc but I think I will stop using them now.

[P]

My Famicom gets very warm too (mostly over the heat sing, not so much in the cartridge) if using an MD1 adapter, but not my Super Famicom for some reason. Maybe Sufami has a more effective cooling?

[mfm]

The smaller the console the more noticable the heat dissipation will be. In the SFC there is a lot more mass the heat can go into.

Could actually be that the cooling is less effective and it's all trapped inside the console.

[Pikkon]

If your worried about the fami getting to hot you can always install a 7805 switching regulator which requires no heat sink.

[Skeletune]

Would anyone mind just linking me to an eBay or Amazon posting of a safe to use, compatible power supply?  I've been looking for two days and don't feel safe in assuming any of them would work.  I'd greatly appreciate the help.

[linktothepast92]

Hello,

I moved to Korea recently. I picked up a famicom disk system. I've yet to plug it in since I do not want to fry it(including the av famicom). What type of voltage convertor should I pick up? Korea uses 220volts.

Would this work?

https://www.amazon.com/BESTEK-Travel-Power-Converter-Charging/dp/B00MSTG93S/ref=sr_1_1?ie=UTF8&qid=1465826631&sr=8-1&keywords=voltage+converter+220+to+110

Thanks so much

[HagiuAlex]

Hi guys, I've been surfing the web for an answer to this question for about a year now (on and off with no clear answer). I have a Famicom with about 50 cartridges which is collecting dust, I don't have to say that I HATE THAT! My question is the following: I've read that a genesis model 1 power adapter works with a famicom, but will a mega drive model 1 adapter work as well? I need to know what model I can buy so that I can enjoy my FAMI!

Also, do I need a power converter, or can I use a simple  power wall socket converter (such as this http://i.ebayimg.com/images/i/191295351181-0-1/s-l1000.jpg) after I have bought my replacement adapter?

Thank you in advance for any replies, I want to end this problem and enjoy my FAMI!

[Pikkon]

If your in pal land than a model 1 mega drive psu will work just fine on your famicom.

[FamiBar]

Does the European NES-002E AC adapter work on the Super Famicom or should I use the Mega Drive 1 AC instead?

[Pikkon]

The nes psu outputs AC so it can fry a super famicom,stick with a mega drive 1 psu as it's DC and will work perfectly fine.