The original NES adapter says 9V 1.3A.
Would a 9V battery do the job?
Thanks,
T
Sure, for a few minutes. Take a look at the
discharge curves for a 9V battery at 1000 mA. I believe this means it'd last around 15 minutes powering a NES. If one replaced the inefficient 7805 regulator with a switching type, it might last longer, as most of the heat seems to come from the regulator in a stock NES.
as blargg stated, the regulator makes quite a dent in power consumption. If you could rather find a 5v battery (or combination of batteries making such voltage), you could bypass the regulator altogether.
Didn't the Game Boy and Game Boy Color use 5.0 V, from either four 1.5 V alkaline cells (GB) or two 1.5 V alkaline cells (GBC)? I wonder if we could steal such a regulator and power the NES that way.
I made the NES operate with a 9V battery for about an hour, strangely enough. I basically clipped the cord off of the NES 9V adapter, and soldered the end to one of those
9V battery snap connectors. I hooked that up to a portable TV to play NES in the car. I don't know why every time I've done it it's lasted so long.
Benjamin Heckendorn did exactly that once...
Yeah, I was planning to build a simple thing that connected the controller with the small TV so it would be like a GBA kind of. I see he did something similar, but a step further (Making the whole NES hand held).
As far I know, switching regulators can have a lot of noise, especially if a lot of current is drawn. But I guess it would work with the NES as it's good old solid electronics (no recent tiny gay electronics that breaks after 2 years).
the NES really uses one full amp at 9 volts?
Did anyone ever check the amperage used after the regulator cuts it down to operating voltage?
and @ Celius if your in your car why not just use the bulit in power supply?
I hope you don't drive while playing to make life more like a video game.
peppers wrote:
the NES really uses one full amp at 9 volts?
Did anyone ever check the amperage used after the regulator cuts it down to operating voltage?
and @ Celius if your in your car why not just use the bulit in power supply?
Well, I intended it to just be portable, not just for the car. But I do have something that you can hook up to the cigarette lighter that has an outlet on it so I could also play my PS1 in the car.
Celius wrote:
I made the NES operate with a 9V battery for about an hour, strangely enough. I basically clipped the cord off of the NES 9V adapter, and soldered the end to one of those
9V battery snap connectors. I hooked that up to a portable TV to play NES in the car. I don't know why every time I've done it it's lasted so long.
Haha that's great
The nes doesn't use more than about 300ma. The regulator should handle 13-14v dc from a car.