15 May
1999
15 May
'99
1:11 p.m.
<The previous mentioned article in Byte is "Coincident Current Ferrite Core
<Memories" and is in the July, 1976 Issue. It is very helpful. It describes
That's the one. Lost my copy (a whole xerox paper box of 3+years) two major
moves ago. A copy of that would be of some help. Finding patterns for
stringing the core plane is tough.
Allison
16 May
16 May
12:08 p.m.
At 09:11 PM 5/15/99 -0400, Allison wrote:
That's the one. Lost my copy (a whole xerox paper
box of 3+years) two major
moves ago. A copy of that would be of some help. Finding patterns for
stringing the core plane is tough.
Allison
It is 11 pages, if you want me to mail you a copy. I can see stringing the
X lines: solder one end to a printed circuit pad, put on the number of
cores, then solder the free end, pulling the wire tight. The enamel, such
as nylon, that one can solder through would be helpful. For the Y lines,
similarly, except you have to decide the orientation of each core and feed
the wire through. The sense line can be diagonal, or, another example,
parallel (both directions) to one axis. That axis is driven first and a
delay is given to wait for the noise to die down. Some of the other schemes
with closed spaced cores, I do not see how anyone could run the sense lines!
-Dave
20 Jul
20 Jul
12:48 a.m.
New subject: Zenith Z180 laptop info needed
HI,
I have a z180 I'm trying to get working. It needs a 12V adaptor, what
polarity and how much current? the current part is only so I have an
idea. I'll likely run it off a bench supply intially until I know if the
nicads are shot.
Allison
2:11 a.m.
New subject: Zenith Z180 laptop info needed
Allison,
If that's the model with the battery on the back and the round co-axial
power plug then it uses 12VDC at 1 Amp. The center pin is positive and the
outside is negative.
Joe
At 08:48 AM 7/20/99 -0400, you wrote:
HI,
I have a z180 I'm trying to get working. It needs a 12V adaptor, what
polarity and how much current? the current part is only so I have an
idea. I'll likely run it off a bench supply intially until I know if the
nicads are shot.
Allison
2:45 a.m.
New subject: Zenith Z180 laptop info needed
That's the beast.
I have a number of adaptors that will do that with the correct polarity.
Thanks,
Allison
On Tue, 20 Jul 1999, Joe wrote:
Allison,
If that's the model with the battery on the back and the round co-axial
power plug then it uses 12VDC at 1 Amp. The center pin is positive and the
outside is negative.
Joe
At 08:48 AM 7/20/99 -0400, you wrote:
HI,
I have a z180 I'm trying to get working. It needs a 12V adaptor, what
polarity and how much current? the current part is only so I have an
idea. I'll likely run it off a bench supply intially until I know if the
nicads are shot.
Allison
12:45 p.m.
New subject: Zenith Z180 laptop info needed
I have a z180 I'm trying to get working. It needs
a 12V adaptor, what
polarity and how much current? the current part is only so I have an
idea. I'll likely run it off a bench supply intially until I know if the
nicads are shot.
Allison
Salvage places around here are littered with old Zenith etc. laptop AC
adapters (except of course the one I need for my IBM 5140), can't you find
the right one locally?
9053
days inactive
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5 comments
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allisonp＠world.std.com -
ddameron＠earthlink.net -
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rigdonj＠intellistar.net