Re: easy project? apple scsi hd on a card ie..scsi expander

["Bill Garber" <willy46pa@comcast.net>]

"Scott Alfter" <salfter@salfter.dyndns.org.is.invalid> wrote in
message news:1bRWb.27$hE.18@fed1read07...
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: In article <ZOednVygVYQBfrfdRVn-hQ@comcast.com>,
: Bill Garber <willy46pa@comcast.net> wrote:
: >But seriously, that is very interesting. Did you drill
: >vent holes in both sides? I'll bet the System Saver would
: >keep it next to room temperature with holes in both sides
: >and the fan sucking air through from the opposite side.
: >Sounds like a very easy way to improve on the stability
: >of Apple II power supplies without worry.
:
: I opened it up, removed the guts (since the board hangs
: upside-down in the section that needs to be drilled), and
: drilled holes on each of the long sides covering a fair
: amount of the surface.

I was thinking that vertical slots cut with a dremel tool
might also be a way to go, but a bit more difficult.  8-)

: To help it out further, you can cut out a hole in the bottom
: of the case under the keyboard and mount an 80mm case fan.
: For power, you can tap the power-supply +12 and ground leads,
: plug into the video modulator header (don't recall offhand
: which pins you want), or run switched AC out of the power
supply
: into a small separate 12V DC supply to power the fan (used a
: small 12V transformer from Radio Shack and a full-wave bridge
: rectifier, capacitor, and 7812 regulator from the junkbox).
: I suppose you could also use a System Saver, but I never liked
: the idea of hanging a big ugly box off the side of my computer.
:-)

I have the pinout here somewhere for the video modulation
header, but where eludes me at the moment. The internal fan
is very desireable. I don't really like the external system
savers, but they do provide another feature. A power connector
to the Apple II itself, and 2 more outlets for say a SCSI drive
and the monitor. I used a similar principle for a 12v grayscale
monitor I have for the IIc. What I did was get a 15 pin connector
and wire a cable into the monitor from the 12v, ground, and video
lines in the video port. Now I simply plug it in set the monitor
on top and fire it up. The only problem is 5.25 disk access tends
to flicker the screen. There is a filter circuit someone came up
with for the 5.25 drives that I can use, but so far no one has
dug it up for me. I should ask again.   8-)

Bill @ GarberStreet Enterprizez };-)
Web Site - http://garberstreet.netfirms.com
Email - willy4SPAM6pa@comXcast.net
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