7ba9031c   
   From: 8bitwizard#fanboy.net@127.0.0.1   
      
   In article ,   
    Kendrick Kerwin Chua  wrote:   
      
   > In article ,   
   > dos-man 64   wrote:   
   > >I think it works with the top-loading NES, but I don't know if it   
   > >works on the original vcr-style NES or not.   
   >   
   > The Genesis 1 has a 9 volt, 1 amp connector with a negative tip. The   
   > Genesis 2 is ten volts, .85 amps and has a positive tip. All American NES   
   > models require AC input if I recall correctly, which is why their power   
   > bricks don't indicate polarity. I don't think we have cross compatibility   
   > here either way.   
      
   You can almost always put DC power to a low-voltage AC input of   
   electronic devices. The AC input usually goes straight into a rectifier,   
   which will happily direct either polarity in the correct direction. (The   
   exception is when there is a transformer, which there usually isn't for   
   low-voltage devices.)   
      
   Of course the other problem is whether the plug is the same size or not.   
   There are an infuriating number of inner and outer diameter sizes used   
   with coaxial plugs (not even counting the weird ones like the SNES   
   uses), and I have seen multiple cases where the same voltage adapters   
   can use two different plugs. (For instance, Zip drives use 5VDC 1A power   
   supplies, but older Zip drives use a larger plug, and newer Zip drives   
   use a PSP size plug. Even Sega changed the plug size between the   
   original Genesis/MD and the Genesis/MD 2.)   
      
   --- SoupGate-Win32 v1.05   
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