magnetic field

przemek klosowski · Feb 15, 2005

On Fri, 11 Feb 2005 15:07:41 -0700, Jim Thompson wrote:

My wife's Samsung Cell Phone died, so Verizon gave her a LG-VX6100 which
has a camera.

They told her that you couldn't get photos off the phone except by
E-mailing them, but I find that hard to believe, since I see photo-editing
software is available (as is a USB cable).

.... and rightly so, because my office friend downloads pictures w/no
problems using the $10 USB cable he got on ebay.

Glenn Gundlach · Feb 18, 2005

Hey Rich, those are 16K x 1 IIRC. I bought a set of 8 for my Apple][
back in '80 for $50. At least 3 of them failed in the next few years.
Whatever would some one want with those dinosaurs? Slower than mud.
Dang, in November I bought a PC3200 512 Meg DIMM for $60. Its a might
faster, too. GG

Kryten · Feb 18, 2005

This smells like a homework type project to me.

It was even on my university's list of final year projects to choose from.

You can certainly do it with a printer port.

I hacked the top off a ceramic 4164 and experimented getting it to work like
a crude camera!

A more interesting challenge would be to think of a project that found a use
for these old DRAMs. I hoarded loads of 4164 and 41256 myself. 8K or 32K is
quite big compared with many small micro's on-chip RAM.

Zak · Feb 18, 2005

Chris wrote:

wry plug for an unfortunate business associate
By the way, if you or anyone knows of anyone who wants to start up
production of something with 4116s, I know a poor soul who got stuck
with a few pallets of 'em when the music stopped (new, 1991 date code),

Did he got stuck with these because of speculation on even higher memory
prices?

as well as 4164s, and might be talked into getting rid of them at a
reasonable price.

If it was speculation he'd better aceept his loss.

Thomas

Robert Lacoste · Feb 18, 2005

"Joe Magiera" <joemagiera@ameritech.net> a écrit dans le message de news:
3b7Rd.8823$hU7.2614@newssvr33.news.prodigy.com...

Since I can't find anything on the 'net that will test them, I am
considering building a RAM tester, specifically a 4116 DRAM tester. It is
a very old form of RAM.

A very low cost and easy solution : Buy an old Apple II or Apple II+ (but
not an Apple IIe !), which is equipped with 3x8 4116 RAM sockets for a great
48Ko total. Remove the top 16 of these 24 original RAM chips and put your
RAM to be tested in these sockets, and run one of the "RAM test" software
the used to be available for the Apple II... You will have an indication of
the failing chip if any...

Friendly,

--
Robert Lacoste
ALCIOM - The mixed signal experts
www.alciom.com

To contact us, thanks to click on the antispam link below :
http://www.cerbermail.com/?dCSHUxvwpw

CWatters · Feb 18, 2005

Just buy some new ones on ebay.... No bids so far... 50 for $1 perhaps

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=50914&item=3875204319&rd=1

Fred Abse · Feb 19, 2005

On Sun, 13 Feb 2005 12:04:49 -0700, Jim Thompson wrote:

I tend to ignore NY and MA as non-existent ;-)

Does that mean the "M" in "MIT" stands for Montana?

--
Then there's duct tape ...
(Garrison Keillor)

cl · Feb 19, 2005

"Fred Abse" <excretatauris@cerebrumconfus.it> wrote in message
news

an.2005.02.17.21.53.36.542457@cerebrumconfus.it...

On Sun, 13 Feb 2005 12:04:49 -0700, Jim Thompson wrote:

I tend to ignore NY and MA as non-existent ;-)

Does that mean the "M" in "MIT" stands for Montana?

--
Then there's duct tape ...
(Garrison Keillor)

I missed the original part of this thread, what was the reason of the thread
about this phone? I just picked one up at the Verizon store.... Anything I
should know?

CL

Jim Thompson · Feb 19, 2005

On Sat, 19 Feb 2005 11:16:33 +0000, Fred Abse
<excretatauris@cerebrumconfus.it> wrote:

On Sun, 13 Feb 2005 12:04:49 -0700, Jim Thompson wrote:

I tend to ignore NY and MA as non-existent ;-)

Does that mean the "M" in "MIT" stands for Montana?

480)460-2350 | |
| E-mail Address at Website Fax

Fred Abse · Feb 19, 2005

On Sat, 19 Feb 2005 08:55:52 -0700, Jim Thompson wrote:

I always despised Cambridge... what an uncivil bunch of people.

Too many Mayflower descendants.

Salem's just up the road, too. Remember what they used to do there?

;-)

--
Then there's duct tape ...
(Garrison Keillor)

Fred Abse · Feb 20, 2005

On Sat, 19 Feb 2005 15:47:51 -0700, Jim Thompson wrote:

It didn't exist yet ;-)

AAUI, Massachusetts didn't ratify the first ten Amendments until 1939.

--
Then there's duct tape ...
(Garrison Keillor)

Fred Abse · Feb 20, 2005

On Sun, 20 Feb 2005 04:35:40 +0000, Clarence_A wrote:

It didn't exist yet ;-) ...Jim Thompson

I guessed he wouldn't know that! I was right! &gt

Just chose to ignore it to continue the irony ;-)

--
Then there's duct tape ...
(Garrison Keillor)

Fred Abse · Feb 20, 2005

On Sun, 20 Feb 2005 18:09:59 +0000, Clarence_A wrote:

Massachusetts is so backward they still re-elect Ted Kennedy every
six years.

Maybe because he's one of the few who can spell "Chappaquiddick"

;-)

--
Then there's duct tape ...
(Garrison Keillor)

CWatters · Feb 22, 2005

"Bill McCutcheon" <wjmccn@earthlink.net> wrote in message
news:6%sSd.3129$Ba3.2836@newsread2.news.atl.earthlink.net...

"Jack Tyler" <jctyler_67@yahoo.com> wrote in message
news:1109022571.378557.143650@z14g2000cwz.googlegroups.com...
The remote for my Panasonic DVD-S27 is the first I've seen that won't
bounce off walls or even mirrors to control the unit.

Try a universal remote?

CWatters · Feb 23, 2005

"leon" <svz@iprimus.com.au> wrote in message
news:421c43b4$1@duster.adelaide.on.net...

Whilst displaying full black on CRT monitors actually provides power
saving and "time off" for relevant pixels, in some LCD displays this may
be actually driving corresponding pixels (i.e. the ones that display
black) fully.

That doesn't matter because the LCD backlight is what burns most of the
power. True power saving modes turn off the backlight.

If the backlight is on it doesn't matter much if the display is all black or
all white - except that the panel may get warmer when displaying an all
black image.

CWatters · Feb 23, 2005

"leon" <svz@iprimus.com.au> wrote in message
news:421c758f@duster.adelaide.on.net...

ok, i got the point, thanks...

but i still would like to know the display mode (ie positive or
negative) used by LCD laptops -

Sorry I'm only familure with 7 segment types. On those with no voltage
applied the crystals are twisted and the display is transparant/white.

Bob Myers · Feb 23, 2005

"leon" <svz@iprimus.com.au> wrote in message
news:421c758f@duster.adelaide.on.net...

ok, i got the point, thanks...

but i still would like to know the display mode (ie positive or
negative) used by LCD laptops - even if only for the purposes of not
"wearing out" pixels (ie not applying voltage on them) in the
"background" areas of display (e.g. terminal window).

It doesn't matter, because this is NOT a "wear-out" factor for
LC displays. In terms of possible damage to the LC material
itself, the main concern (assuming that the unit isn't subjected to
temperature extremes) is the application of a long-term net
DC voltage across the LC cell. This does not occur even when
the pixels are "on" (whether "on" is a "black" state or a "white"
one), as the polarity of the drive is reversed, typically from frame
to frame.

Having said that, there are actually a number of different LC
modes in use in laptops, some "positive" and some "negative." I
believe the most common would still be a standard twisted-nematic
cell with crossed polarizers, which is normally transmissive when off
(which I think you're calling "negative," but please see below),
but that's by no means the only type. (This results mostly from
manufacturing convenience - building the display with the
polarizers crossed means that for both the top and bottom glass,
the polarizer is aligned with the "rubbing" layer.)

Actually, I need to now insert a minor correction re terminology
- "positive mode" and "negative mode," when used with LCDs,
often does not refer to whether the pixel is "white" when driven,
but rather to the overall appearance of the display - i.e., does it
give a "black text on white" appearance or "white text on black"?
Here, though, "positive" is used as it would be with respect to
typical text displays - it refers to black text on a white background.
Which often means that the LC itself is actually operating in the
what you might call a "negative" mode - the segments that make up
the characters are black when driven! So you need to be very
careful to understand the context in which these terms are being
used.

I also understand
that prolonged display of static images (e.g. task bar in window$ os)
has a non-permanent "burn in" on LCD displays and this is a result of
pixels being in "on" state for continuous amount of time. I realise that
the net effect of either display mode on lifetime of a pixel is rather
minimal, but still, would be nice to know...

Not really; there was a problem with this in the early days of
LCDs (the problem is generally referred to as "image sticking,"
and if the drive were held in one state long enough, it could in
some cases become permanent), but it's pretty much a non-issue
with most modern displays. (Note that this statement may not
apply to the really cheap monochrome, passive-drive types
used in some applications - I'm referring only to modern
active-matrix panels as used for notebooks, monitors, etc..)

Bob M.

Jim Thompson · Feb 23, 2005

On Wed, 23 Feb 2005 21:32:31 GMT, "DSP" <1214u@myway.com> wrote:

SCAM _ SCAM _ SCAM _

[snip]

480)460-2350 | |
| E-mail Address at Website Fax

Ken Taylor · Feb 23, 2005

Yet you needed to re-post the *ENTIRE* post.......

"DSP" <1214u@myway.com> wrote in message
news

D6Td.206689$K7.189184@fe2.news.blueyonder.co.uk...

SCAM _ SCAM _ SCAM _

=================================
"busymommy" <bzymomof3girlz@yahoo.com> wrote in message
news:1108934851.041697.24830@c13g2000cwb.googlegroups.com...
I found this in a news group and decided to try it. A little while
back, I was browsing through

ArdentGuy · Feb 24, 2005

Hi,

In response to "Do you have a dimmer circuit with MOSFET to suggest?"
Tomi responded with "CMOS gate implement
s reverse phase control - this circuit implements a
"reverse" phase control, using only a single CMOS 4001 quad NOR gate,
conduction begins at the zero crossing of the ac sine wave and the
turn-off timing is adjusted based on dimmer setting
http://www.e-insite.net/ednmag/archives/1998/052198/11DI.htm#CMOS%20gate%20implements"

I'm interested! I can get to the article but the circuit diagram (figure
1) is supposedly stored in a .PDF file...that will not come up. Has
anybody got another source for this circuit? Or is it just me who can't
get to the .PDF file?

Thanks,

John

magnetic field

przemek klosowski

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Glenn Gundlach

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Kryten

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Zak

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Robert Lacoste

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CWatters

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Fred Abse

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cl

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Jim Thompson

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Fred Abse

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Fred Abse

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