Question about the famicom recommended power adaptor

[fredJ]

This article says that it is receommended to use the original power adaptor.

http://famicomworld.com/workshop/tech/famicom-power-adaptor/

Why would that be necessary? 9V DC is 9V DC in any country. I've had no problem with a generic adaptor for my twin fami for example.

[b1aCkDeA7h]

Honestly, just make sure you have the right voltage and polarity and it shouldn't be too big of a deal.  While I have quite a handful of official Nintendo adapters, I don't use them unless I'm doing a general test or something.  I do have one of those stepdown converters, but I gave it to a buddy of mine since he has three or four Japanese systems so he just plugged a power strip into it.

The voltage regulator can usually deal with any discrepancies but I don't like to stress components out of their comfort zone.

[MWK]

Why would that be necessary? 9V DC is 9V DC in any country. I've had no problem with a generic adaptor for my twin fami for example.

Exactly, for my Twin I'm using a power supply from some HP scanner or printer (dunno) without any problems.

Like b1aCkDeA7h said, V, A and a polarity are the main things here.
There is also important the diameter of the plug, to fit it pretty tight into the console DC inlet.