About 5 years ago, my CMD hard drive power supply died.  One of the
suggested solutions was to modify an AMIGA 500 power supply.  Can a
hard drive power supply be used without causing damage to itself or
the A500, when connected to an AMIGA 500?  The CMD PSU output is 5
volts at 2 amps and 12 volts at 1.5 amps.

On Jan 9, 2:47=A0pm, Paul wrote:

> About 5 years ago, my CMD hard drive power supply died. =A0One of the
> suggested solutions was to modify an AMIGA 500 power supply.

     Yes, on my CMD hard drive is really an A500 power supply, and
that's the way it came from CMD.

> Can a
> hard drive power supply be used without causing damage to itself or
> the A500, when connected to an AMIGA 500?

     Well, I'm unclear on your question, Paul.  Do you want to take an
A500 p.s. and use it on the CMD hard drive, or do you want to take
a CMD hard drive p.s. (whether it is the modded A500 p.s. or the
lower-power CMD p.s. which you have) and put it on an A500?

> The CMD PSU output is 5 volts at 2 amps and 12 volts at 1.5
> amps.

     Yeah, that is the lower power p.s.

           Truly,
           Robert Bernardo
           Fresno Commodore User Group
           http://videocam.net.au/fcug
           The Other Group of Amigoids
           http://www.calweb.com/~rabel1/

On Jan 10, 1:52=A0am, rberna...@value.net wrote:
> On Jan 9, 2:47=A0pm, Paul wrote:
>
> > About 5 years ago, my CMD hard drive power supply died. =A0One of the
> > suggested solutions was to modify an AMIGA 500 power supply.
>
> =A0 =A0 =A0Yes, on my CMD hard drive is really an A500 power supply, and
> that's the way it came from CMD.
>
> > Can a
> > hard drive power supply be used without causing damage to itself or
> > the A500, when connected to an AMIGA 500?
>
> =A0 =A0 =A0Well, I'm unclear on your question, Paul. =A0Do you want to tak=
e an
> A500 p.s. and use it on the CMD hard drive, or do you want to take
> a CMD hard drive p.s. (whether it is the modded A500 p.s. or the
> lower-power CMD p.s. which you have) and put it on an A500?
>
> > The CMD PSU output is 5 volts at 2 amps and 12 volts at 1.5
> > amps.
>
> =A0 =A0 =A0Yeah, that is the lower power p.s.

What are the electric power specifications of A500 PSUs.  When
I had one, the A500 PSU looked like a C128 PSU with a switch.
C128 and A500 PSUs have different electric specs as well.
My CMD PSU looks much different than the A500 PSU.  I was
thinking of selling my spare CMD PSU as something that could
be used on an A500 as well.  Maybe I should scrap that idea.

On Jan 10, 7:09=A0am, Paul wrote:

> What are the electric power specifications of A500 PSUs?

     5 volts at 4.5 amps and 12 volts at 1 amp (without crawling
around on the floor to dig out the A500 p.s. and looking at it).

>=A0I was
> thinking of selling my spare CMD PSU as something that could
> be used on an A500 as well. =A0Maybe I should scrap that idea.

     A CMD p.s. such as yours would severely underpower an
A500.

              Truly,
              Robert Bernardo
              Fresno Commodore User Group
              http://videocam.net.au/fcug
              The Other Group of Amigoids
              http://www.calweb.com/~rabel1/

When I aquired an A500 a few years ago for $10 at a junk store, it had
no power supply.  I just used a regular PC power supply and cut off
all the cables that it didn't need and added the correct connector on
it for the A500.  Then I took some blue vinyl tape and coverd all of
the metal on the power supply except for the fan and a few vents so
that it wasn't just bare metal laying around.  It actually turned out
rather nice and it works perfectly.  I'm sure the same concept would
work for your application, although I know nothing of the CMD drives.

On Jan 11, 8:03=A0am, David Murray wrote:

> I just used a regular PC power supply and cut off
> all the cables that it didn't need and added the correct connector on
> it for the A500. =A0Then I took some blue vinyl tape and coverd all of
> the metal on the power supply except for the fan and a few vents so
> that it wasn't just bare metal laying around. =A0It actually turned out
> rather nice and it works perfectly.

     Yeah, at the AmiWest Show a few years ago I picked up
a converted AT power supply with leads for an A500/600/1200.
Then a year after that at the AmiWest Show, I picked up a
external BigFoot power supply, which was just really a
converted AT power supply with leads for the above computers.
Back in the mid -1990's, those BigFoot p.s.'s were going for
about $130.  I got mine for just a few dollars.

                Truly,
                Robert Bernardo
                Fresno Commodore User Group
                http://videocam.net.au/fcug
                The Other Group of Amigoids
                http://www.calweb.com/~rabel1/

"rusure" <r_u_sure@mybluelight.com> wrote in message 
news:2b16eded-67d3-424a-9b9a-478a69872eca@e10g2000prf.googlegroups.com...
> About 5 years ago, my CMD hard drive power supply died.  One of the
> suggested solutions was to modify an AMIGA 500 power supply.  Can a
> hard drive power supply be used without causing damage to itself or
> the A500, when connected to an AMIGA 500?  The CMD PSU output is 5
> volts at 2 amps and 12 volts at 1.5 amps.

No, not with those specs but you could use an AT or ATX (or even A1000 for 
that matter) power supply.