From: Anders Carlsson on
"xc8/bRONx" <csynt8bit(a)gmail.com> writes:

> Note that its possible to connect an ATX (pc) power supply to
> the 1581 drive.

Or probably an AT, Mac or about any power supply that outputs
stabilized 5V and 12V in non-trivial effects. I power one of
my 1541-IIs from my PC, but a friend offered me a loose power
supply from a Mac LC that probably could do the job and take
much less space if I want to use it standalone.

--
Anders Carlsson
From: Craig Taylor on

Mark Smith wrote:
> Leif Bloomquist wrote:
> > For those who would rather buy these from the comfort and safety of eBay,
> > I've listed them there as well. Includes a couple of pictures of the kits.
> >
> > http://forum.cmdrkey.com/viewtopic.php?p=1471
> >
> > (Sorry, can't link to eBay directly.)
> >
> > eBay item# 300011342939
>
> Thanks ... E-bay gives a 'slightly' warmer feeling of safety .. not
> much mind but a little :-)

Question: Can you use a HD flippy assembly inside them? I would assume
that the control lines / programming logic would default the assembly
to low-density writes but it might come in handy to do it that way so
as to not run into the same issues w/ formatting hd flippies.

- Craig Taylor
http://www.ctalkobt.net/cbm

From: Nicolas Welte on
Anders Carlsson wrote:
> "xc8/bRONx" <csynt8bit(a)gmail.com> writes:
>
>> Note that its possible to connect an ATX (pc) power supply to
>> the 1581 drive.
>
> Or probably an AT, Mac or about any power supply that outputs
> stabilized 5V and 12V in non-trivial effects. I power one of
> my 1541-IIs from my PC, but a friend offered me a loose power
> supply from a Mac LC that probably could do the job and take
> much less space if I want to use it standalone.

Some Floppy drives need 5V only. In this case, a 5V power supply will
do. I plan to use my 1581 board in my C64DTV project together with a
slimline laptop floppy drive, so I can run all components from a single
5V source.

But I saw normal sized 3,5" HD drives with 5V as well.

Nicolas
From: Anders Carlsson on
Nicolas Welte <welte_spam(a)freenet.de> writes:

> Some Floppy drives need 5V only.

... and the logic board only uses 5V? Is it the drive mechanism
in a 1541/71/81 that typically needs the 12V?

--
Anders Carlsson
From: Nicolas Welte on
Anders Carlsson wrote:
> Nicolas Welte <welte_spam(a)freenet.de> writes:
>
>> Some Floppy drives need 5V only.
>
> ... and the logic board only uses 5V? Is it the drive mechanism
> in a 1541/71/81 that typically needs the 12V?
>

yes, and mainly the motors. In the 1540/41/51/70/71 there is 12V
depending motor control circuits on the mainboard as well.

Nicolas
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