Harlequin Superfo 128 Issue D question.

[the antithesis]

So, I got one of the 128K Harlequin board which is a clone of the ZX Spectrum. My question is since it says the whole board only uses 5v, can I just replace the whole power circuit, which apparently knocks down the 9v center negative that comes in to 5v, with a micro USB plug an then use a cell charger like on my Raspberry Pi?

 

Personally, I can't think of any reason why not. Closest problem I could find was the amperage, but the center negative PSU I've found supplies just under one amp, same as the 5v charger.

 

I just don't know enough about electronics to be confident that this will work or that I'm not missing something that is blindingly obvious to someone competent.

[Nateo]

It seeeeems like it would be fine? I can't think of anything on the board that runs directly from the 9v input.

[factus10]

Yes, you can do that. I've built two of them, though I use the 9v input bc I already had some converters available. I removed the regulator from my 1000 and use a converted USB power supply for it.