Re: [Kinda OT] Power Supply

[julian814@hotmail.com (Ralph Glatt)]

"Bill Garber" <willy46pa@comcast DOT net> wrote in message news:<MMGdnSGTDLh3pr_cRVn-og@comcast.com>...
> "Ralph Glatt" <julian814@hotmail.com> wrote in message
> ce9c44dd.0408170659.516c726b@posting.google.com">news:ce9c44dd.0408170659.516c726b@posting.google.com...
> : I have a question about a power supply for a ZX81, but no one
>  on
> : comp.sys.sinclair seems to be willing to help me, but since
>  it's a
> : general question and not system specific, I thought I might get
>  an
> : answer here.
> :
> : The ZX81 takes a power supply that puts out 9v DC around 800
>  mA. I
> : needed one, and a friend gave me a 9v AC power supply and said
>  use
> : that. Thing is, I'm afraid if I use the wrong kind of voltage,
>  I might
> : fry the board, which I don't want to do, because the ZX81 isn't
>  all
> : that easy to get in the US. Should I try it, or should I keep
>  looking
> : for a DC power supply?
> 
> Radio Splat should have those 9v DC x 800mA available.
> I might even have a spare one lying around here. Let
> me check and get back to you later today.  :o)
> 
> I see Richard made a little effort to look up the spec
> and that center post is positive, but is it post or is
> it ring. In other words, does it fit over a post, or plug
> into a hole??

It's a 3.5 mm standard jack. I have the parts, so it's just a matter
of putting it together. Don't worry, though, I'm sure I can find other
things for you to do for me when you get better. ;-)


Ralph Glatt