K
keith
Guest
On Sat, 15 Jan 2005 08:01:34 -0600, Rhyanon wrote:
--
Keith
We're going to be here a while. I'll get the popcorn.
--
Keith
J
John Woodgate
Guest
I read in sci.electronics.design that Dick <dick@langwang.demon.co.uk>
wrote (in <QSjscjJmYQ6BFws3@langwang.demon.co.uk>
about 'OT: Teaching
Math in the 21st Century', on Sat, 15 Jan 2005:
same.
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
wrote (in <QSjscjJmYQ6BFws3@langwang.demon.co.uk>
about 'OT: TeachingMath in the 21st Century', on Sat, 15 Jan 2005:
My father told me that was his generation, and his father told him the
same.
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
J
John Woodgate
Guest
I read in sci.electronics.design that Kevin Aylward
<salesEXTRACT@anasoft.co.uk> wrote (in <y69Gd.108643$C8.45005@fe3.news.b
lueyonder.co.uk> about 'OT: Teaching Math in the 21st Century', on Sat,
15 Jan 2005:
make change.
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
<salesEXTRACT@anasoft.co.uk> wrote (in <y69Gd.108643$C8.45005@fe3.news.b
lueyonder.co.uk>
about 'OT: Teaching Math in the 21st Century', on Sat,15 Jan 2005:
Mathematics is not arithmetic. It is legendary that mathematicians can't
make change.
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
J
Jim Thompson
Guest
On Sat, 15 Jan 2005 17:02:53 +0000, John Woodgate
<jmw@jmwa.demon.contraspam.yuk> wrote:
it.
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
<jmw@jmwa.demon.contraspam.yuk> wrote:
Ain't that the truth! The real joy is watching your children acquireI read in sci.electronics.design that Dick <dick@langwang.demon.co.uk
wrote (in <QSjscjJmYQ6BFws3@langwang.demon.co.uk>
Math in the 21st Century', on Sat, 15 Jan 2005:
Let's face it, we're (well at least I'm) of the last generation that
seems to have been issued with common sense,
My father told me that was his generation, and his father told him the
same.
it.
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice
480)460-2350 | || E-mail Address at Website Fax
480)460-2142 | Brass Rat || http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
Guest
In <diliu0dva140veuqm8dt5624eb8dikrsig@4ax.com>, on 01/15/05
at 10:44 AM, Jim Thompson <thegreatone@example.com> said:
the look of sheer panic on the face of the high school graduate who cannot
figure out what to do when they have already rung up the bill at $4.56 and
you hand them a five dollar bill, plus six cents change....
Walmart gives high school students a 10% discount card for crafts and
sewing stuff they use for school. We go to the checkout line, hand the 20
year old girl the card, and she reaches under the counter for a
calculator. I asked her what the heck she was doing, and she said she
needed it to figure out the discount on each article before she rang it
up.........
It may be true that all parents think the next generation is doomed, but
sooner or later, one of them is going to be right. I think its us
John
at 10:44 AM, Jim Thompson <thegreatone@example.com> said:
The real joy is standing at the register in the fast food place, seeing
the look of sheer panic on the face of the high school graduate who cannot
figure out what to do when they have already rung up the bill at $4.56 and
you hand them a five dollar bill, plus six cents change....
Walmart gives high school students a 10% discount card for crafts and
sewing stuff they use for school. We go to the checkout line, hand the 20
year old girl the card, and she reaches under the counter for a
calculator. I asked her what the heck she was doing, and she said she
needed it to figure out the discount on each article before she rang it
up.........
It may be true that all parents think the next generation is doomed, but
sooner or later, one of them is going to be right. I think its us
John
D
Don Pearce
Guest
On Sat, 15 Jan 2005 12:10:53 -0700, uvcceet@juno.com wrote:
showed the girl how to do change the old fashioned way "God, that is
SO easy!" she said. No more problems.
d
Pearce Consulting
http://www.pearce.uk.com
I was in a shop the other day where the auto till had gone wrong. IThe real joy is standing at the register in the fast food place, seeing
the look of sheer panic on the face of the high school graduate who cannot
figure out what to do when they have already rung up the bill at $4.56 and
you hand them a five dollar bill, plus six cents change....
showed the girl how to do change the old fashioned way "God, that is
SO easy!" she said. No more problems.
d
Pearce Consulting
http://www.pearce.uk.com
R
Rich The Philosophizer
Guest
On Sat, 15 Jan 2005 12:01:42 +0000, Dick wrote:
mistakes!
;^j
Rich
Not to worry, we won't. But we _do_ plan to make a whole _new_ set of
mistakes!
;^j
Rich
R
Rich Grise
Guest
On Sat, 15 Jan 2005 17:05:34 +0000, John Woodgate wrote:
gorgeous blonde bimbo on the other, and give them their instructions,
which are essentially "Do Zeno."[0] The mathemetician stands there, trying
to evaluate the infinite series to the nth term, and the engineer just
says, "It's a limit", walks across the room and gets the girl.
Cheers!
Rich
[0] you can take as many steps as you want to, as fast as you want to,
even infinitely many, infinitely fast, if you have to, with this one
condition - the first step can take you half-way across the room, and
each next step takes you half of the remaining distance.
They put a mathematician and an engineer at one end of a room, and aI read in sci.electronics.design that Kevin Aylward
salesEXTRACT@anasoft.co.uk> wrote (in <y69Gd.108643$C8.45005@fe3.news.b
lueyonder.co.uk>
15 Jan 2005:
I wouldn't. I can't really agree based on my own experiences. I can't do
mental arithmetic at all. Even 6*7 is a real toil for me, as I never
learned my times table when I was young, and without sounding too
arrogant, for an EE, I am great at math, e.g.
http://www.anasoft.co.uk/physics/gr/index.html
Mathematics is not arithmetic. It is legendary that mathematicians can't
make change.
gorgeous blonde bimbo on the other, and give them their instructions,
which are essentially "Do Zeno."[0] The mathemetician stands there, trying
to evaluate the infinite series to the nth term, and the engineer just
says, "It's a limit", walks across the room and gets the girl.
Cheers!
Rich
[0] you can take as many steps as you want to, as fast as you want to,
even infinitely many, infinitely fast, if you have to, with this one
condition - the first step can take you half-way across the room, and
each next step takes you half of the remaining distance.
R
Rich The Newsgropup Wacko
Guest
On Sat, 15 Jan 2005 19:52:34 +0000, Guy Macon wrote:
clues up.
Cheers!
Rich
Let's just flame every "google groups" poster to death until somebody
clues up.
Cheers!
Rich
J
Jim Thompson
Guest
On Sat, 15 Jan 2005 12:10:53 -0700, uvcceet@juno.com wrote:
pennies, because I wanted a quarter as change. She almost went
apoplectic ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice480)460-2350 | |
| E-mail Address at Website Fax480)460-2142 | Brass Rat |
| http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
I had a checkout total of $5.01, so I gave the girl $5 plus 26In <diliu0dva140veuqm8dt5624eb8dikrsig@4ax.com>, on 01/15/05
at 10:44 AM, Jim Thompson <thegreatone@example.com> said:
Ain't that the truth! The real joy is watching your children acquire it.
The real joy is standing at the register in the fast food place, seeing
the look of sheer panic on the face of the high school graduate who cannot
figure out what to do when they have already rung up the bill at $4.56 and
you hand them a five dollar bill, plus six cents change....
Walmart gives high school students a 10% discount card for crafts and
sewing stuff they use for school. We go to the checkout line, hand the 20
year old girl the card, and she reaches under the counter for a
calculator. I asked her what the heck she was doing, and she said she
needed it to figure out the discount on each article before she rang it
up.........
It may be true that all parents think the next generation is doomed, but
sooner or later, one of them is going to be right. I think its us
John
pennies, because I wanted a quarter as change. She almost went
apoplectic ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice
480)460-2350 | || E-mail Address at Website Fax
480)460-2142 | Brass Rat || http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
M
Mark Jones
Guest
Rich The Newsgropup Wacko wrote:
Hmm... wonder how hard it would be to code an extension into
ThunderBird to flag news from google groups as being spam...
-- "Once you have flown, you will walk the earth with your eyes turned
skyward; for there you have been, and there you long to return."
Leonardo da Vinci
Hmm... wonder how hard it would be to code an extension into
ThunderBird to flag news from google groups as being spam...
-- "Once you have flown, you will walk the earth with your eyes turned
skyward; for there you have been, and there you long to return."
Leonardo da Vinci
Guest
This is especially useful for me, since I am not trained in this.
Confirming a measurement is a good way to see if I really understand
what is going on. Explaining it to someone else is also a good way.
Arny Krueger wrote:
Confirming a measurement is a good way to see if I really understand
what is going on. Explaining it to someone else is also a good way.
Arny Krueger wrote:
S
Stuart Brorson
Guest
In sci.electronics.cad Ales Hvezda <ahvezda@seul.org> wrote:
: Hi,
: I usually like spending my free time working on the code rather than
: posting to USENET, but I want to address some of the points from the
: previous poster in this thread.
Now that's something extraordinary! The main creator of gEDA responds
to a bug report on Usenet! When was the last time you saw a developer
for Orcad respond to any bug report?
So what was that complaint about F/OSS lacking support??. . . . .
[. . . snip! . . . ]
: I followed the INSTALLs and READMEs that
: can be found at:
: http://geda.seul.org/download.html
: The only change I made was to add /usr/local/lib into ld.so.conf
: (and re-ran ldconfig).
This is an intersting observation; this library is a standard library
to store .so files. Why doesn't RedHat already have this in
ld.so.conf? Also, I have never had to do this. Is this a
libstroke-only thing? I should look into this; I can easily add
/usr/local/lib to the LD_LIBRARY_PATH at the start of the install
program.
[. . . snip . . . ]
: Hmmm, on my newly installed RedHat 9.0 system, gtk+ 2.0 is in
: fact called gtk+-2.0, i.e. the following works:
Yeah, I've never seen them called anything other than this. If your
distro calls them something else, it's a problem with your distro.
Not that that excuses a failed install. Rather, the capability to
configure for this name for GTK should be built into the installer.
Again, what is your distro, and where did you get it? Can you point
to web documentation about this change to GTK? I'd like to
check into this oddity.
:> The first time I ran the CDROM install, it built and installed the
: symbols
:> libraries at least 20 times before I killed the process. (I was
: getting
:> curious as to why it was taking so long, and why every hour or so I
: would
:> look at it and it was building the symbols yet again.)
: Yes, I observed this as well and it is a bug. However, if you
: let it run, it will eventually finish (it did for me). I have a pretty
: good idea why this is happening. Stuart and I will fix this for the
: next rev of the suite CD.
This occurred because the installer configured each program
individually, and each program had the symbols in its dependency
tree. Therefore, the symbols were blindly rebuilt for each program in
the suite. If you had let the program churn along (as it says in the
README), you would have eventually gotten through this.
Anyway, we will change the way dependencies are handled in the next
build. We take real, substantive, detailed bug reports seriously;
fixing issues which users notice is how F/OSS is hardened over time.
Stuart
: Hi,
: I usually like spending my free time working on the code rather than
: posting to USENET, but I want to address some of the points from the
: previous poster in this thread.
Now that's something extraordinary! The main creator of gEDA responds
to a bug report on Usenet! When was the last time you saw a developer
for Orcad respond to any bug report?
So what was that complaint about F/OSS lacking support??. . . . .
[. . . snip! . . . ]
: I followed the INSTALLs and READMEs that
: can be found at:
: http://geda.seul.org/download.html
: The only change I made was to add /usr/local/lib into ld.so.conf
: (and re-ran ldconfig).
This is an intersting observation; this library is a standard library
to store .so files. Why doesn't RedHat already have this in
ld.so.conf? Also, I have never had to do this. Is this a
libstroke-only thing? I should look into this; I can easily add
/usr/local/lib to the LD_LIBRARY_PATH at the start of the install
program.
[. . . snip . . . ]
: Hmmm, on my newly installed RedHat 9.0 system, gtk+ 2.0 is in
: fact called gtk+-2.0, i.e. the following works:
Yeah, I've never seen them called anything other than this. If your
distro calls them something else, it's a problem with your distro.
Not that that excuses a failed install. Rather, the capability to
configure for this name for GTK should be built into the installer.
Again, what is your distro, and where did you get it? Can you point
to web documentation about this change to GTK? I'd like to
check into this oddity.
:> The first time I ran the CDROM install, it built and installed the
: symbols
:> libraries at least 20 times before I killed the process. (I was
: getting
:> curious as to why it was taking so long, and why every hour or so I
: would
:> look at it and it was building the symbols yet again.)
: Yes, I observed this as well and it is a bug. However, if you
: let it run, it will eventually finish (it did for me). I have a pretty
: good idea why this is happening. Stuart and I will fix this for the
: next rev of the suite CD.
This occurred because the installer configured each program
individually, and each program had the symbols in its dependency
tree. Therefore, the symbols were blindly rebuilt for each program in
the suite. If you had let the program churn along (as it says in the
README), you would have eventually gotten through this.
Anyway, we will change the way dependencies are handled in the next
build. We take real, substantive, detailed bug reports seriously;
fixing issues which users notice is how F/OSS is hardened over time.
Stuart
R
Robert
Guest
"Xanax" <Xanax@xanaxcorp.fm> wrote in message
news:chptgc$gen$1@kermit.esat.net...
if you're just talking about inductors. Layer to layer transformers using a
spiral coil on each PC board layer is another thing. These two notes should
get you going:
http://www.usmicrowaves.com/inductors/spiral_chip_inductors_design_modeling.htm
http://rfic.eecs.berkeley.edu/files/jssc_oct98.pdf
news:chptgc$gen$1@kermit.esat.net...
Do a search on "Spiral Inductors". They were used more in ICs than PC boards
if you're just talking about inductors. Layer to layer transformers using a
spiral coil on each PC board layer is another thing. These two notes should
get you going:
http://www.usmicrowaves.com/inductors/spiral_chip_inductors_design_modeling.htm
http://rfic.eecs.berkeley.edu/files/jssc_oct98.pdf
R
Rene Tschaggelar
Guest
uvcceet@juno.com wrote:
Rene
--
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
& commercial newsgroups - http://www.talkto.net
It could well be that the Amplifier is a current feedback type.
Rene
--
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
& commercial newsgroups - http://www.talkto.net
C
Chuck Harris
Guest
Hi Ales,
Ales Hvezda wrote:
forum for detailed debugging, but since I started this, and have no
interest in performing a hit-and-run tar & feather job, I guess we have
to resolve the problems here in public.
gschem's problem with dynamic linked libraries. It should be noted that
RedHat never uses /usr/local/lib for its libraries, but your CDROM installs
its dynamic libraries in /usr/local/lib. (Debian on the other hand uses both
locations)
add the bug fixes and security updates.
that you have created in your development of gEDA, is it not? Redhat 9
doesn't use pkg-config at all in any of its setups. (although I have
installed the latest version as per your instructions...)
$ rpm -qi gtk2
Name : gtk2 Relocations: (not relocateable)
Version : 2.2.4 Vendor: The KDE-RedHat Project
Release : 10.6.rh90.kde Build Date: Thu 14 Oct 2004 03:51:04 PM EDT
Install Date: Sun 31 Oct 2004 08:47:19 AM EST Build Host: math.unl.edu
Group : System Environment/Libraries Source RPM: gtk2-2.2.4-10.6.rh90.kde.src.rpm
Size : 8734983 License: LGPL
Signature : DSA/SHA1, Thu 14 Oct 2004 03:57:07 PM EDT, Key ID efe4780cff6382fa
Packager : kde-redhat Developers <http://kde-redhat.sf.net/>
URL : http://www.gtk.org
Summary : The GIMP ToolKit (GTK+), a library for creating GUIs for X.
Description :
The gtk+ package contains the GIMP ToolKit (GTK+), a library for
creating graphical user interfaces for the X Window System. GTK+ was
originally written for the GIMP (GNU Image Manipulation Program) image
processing program, but is now used by several other programs as well.
This is the package you are calling gtk+-2.0.
*and*...
$ rpm -qi gtk+
Name : gtk+ Relocations: (not relocateable)
Version : 1.2.10 Vendor: The KDE-RedHat Project
Release : 33.5.rh90.kde Build Date: Tue 05 Oct 2004 11:42:52 AM EDT
Install Date: Sun 31 Oct 2004 08:47:37 AM EST Build Host: math.unl.edu
Group : System Environment/Libraries Source RPM: gtk+-1.2.10-33.5.rh90.kde.src.rpm
Size : 2263077 License: LGPL
Signature : DSA/SHA1, Tue 12 Oct 2004 09:39:43 AM EDT, Key ID efe4780cff6382fa
Packager : kde-redhat Developers <http://kde-redhat.sf.net/>
URL : http://www.gtk.org
Summary : The GIMP ToolKit (GTK+), a library for creating GUIs for X.
Description :
The gtk+ package contains the GIMP ToolKit (GTK+), a library for
creating graphical user interfaces for the X Window System. GTK+ was
originally written for the GIMP (GNU Image Manipulation Program) image
processing program, but is now used by several other programs as
well.
*and*...
$ rpm -qi gtk+-2.0
package gtk+-2.0 is not installed
This is the way it has always been on RedHat 9.0 (Shrike)
If I do a search on my library directory, I find:
$ ls -l /usr/lib/gtk*
/usr/lib/gtk:
total 4
drwxr-xr-x 3 root root 4096 Dec 16 23:35 themes
/usr/lib/gtk-2.0:
total 12
drwxr-xr-x 5 root root 4096 Dec 16 23:35 2.2.0
drwxr-xr-x 2 root root 4096 Oct 31 08:46 include
drwxr-xr-x 2 root root 4096 Aug 1 2003 modules
Just like you have.
The problem here is pkg-config doesn't have all of the ".pc" files
stuffed somewhere that describe the packages as gEDA needs to see
them. Who is supposed to supply all this nonstandard stuff?
working. PCB has worked just fine all along (and still does)
[snip]
upgraded to the latest bug fixes, that is all.
The repeated rebuilding of the symbol libraries easily slowed the process down by
10 to 20 times.
have successfully built the system? That would be a more interesting
bit of information.
-Chuck Harris
Ales Hvezda wrote:
Thank you, I appreciate your time. I would prefer not to use this
forum for detailed debugging, but since I started this, and have no
interest in performing a hit-and-run tar & feather job, I guess we have
to resolve the problems here in public.
That is precisely the version I am running.
As did I.
I have since made that addition to my ld.so.conf as well. It fixes
gschem's problem with dynamic linked libraries. It should be noted that
RedHat never uses /usr/local/lib for its libraries, but your CDROM installs
its dynamic libraries in /usr/local/lib. (Debian on the other hand uses both
locations)
Nope, FreshRPM is an exact configuration of RH9.0 Shrike. They just
add the bug fixes and security updates.
The pkg-config path variable that you are using is something nonstandard
that you have created in your development of gEDA, is it not? Redhat 9
doesn't use pkg-config at all in any of its setups. (although I have
installed the latest version as per your instructions...)
When I do an rpm -qi on gtk2 I get:
$ rpm -qi gtk2
Name : gtk2 Relocations: (not relocateable)
Version : 2.2.4 Vendor: The KDE-RedHat Project
Release : 10.6.rh90.kde Build Date: Thu 14 Oct 2004 03:51:04 PM EDT
Install Date: Sun 31 Oct 2004 08:47:19 AM EST Build Host: math.unl.edu
Group : System Environment/Libraries Source RPM: gtk2-2.2.4-10.6.rh90.kde.src.rpm
Size : 8734983 License: LGPL
Signature : DSA/SHA1, Thu 14 Oct 2004 03:57:07 PM EDT, Key ID efe4780cff6382fa
Packager : kde-redhat Developers <http://kde-redhat.sf.net/>
URL : http://www.gtk.org
Summary : The GIMP ToolKit (GTK+), a library for creating GUIs for X.
Description :
The gtk+ package contains the GIMP ToolKit (GTK+), a library for
creating graphical user interfaces for the X Window System. GTK+ was
originally written for the GIMP (GNU Image Manipulation Program) image
processing program, but is now used by several other programs as well.
This is the package you are calling gtk+-2.0.
*and*...
$ rpm -qi gtk+
Name : gtk+ Relocations: (not relocateable)
Version : 1.2.10 Vendor: The KDE-RedHat Project
Release : 33.5.rh90.kde Build Date: Tue 05 Oct 2004 11:42:52 AM EDT
Install Date: Sun 31 Oct 2004 08:47:37 AM EST Build Host: math.unl.edu
Group : System Environment/Libraries Source RPM: gtk+-1.2.10-33.5.rh90.kde.src.rpm
Size : 2263077 License: LGPL
Signature : DSA/SHA1, Tue 12 Oct 2004 09:39:43 AM EDT, Key ID efe4780cff6382fa
Packager : kde-redhat Developers <http://kde-redhat.sf.net/>
URL : http://www.gtk.org
Summary : The GIMP ToolKit (GTK+), a library for creating GUIs for X.
Description :
The gtk+ package contains the GIMP ToolKit (GTK+), a library for
creating graphical user interfaces for the X Window System. GTK+ was
originally written for the GIMP (GNU Image Manipulation Program) image
processing program, but is now used by several other programs as
well.
*and*...
$ rpm -qi gtk+-2.0
package gtk+-2.0 is not installed
This is the way it has always been on RedHat 9.0 (Shrike)
If I do a search on my library directory, I find:
$ ls -l /usr/lib/gtk*
/usr/lib/gtk:
total 4
drwxr-xr-x 3 root root 4096 Dec 16 23:35 themes
/usr/lib/gtk-2.0:
total 12
drwxr-xr-x 5 root root 4096 Dec 16 23:35 2.2.0
drwxr-xr-x 2 root root 4096 Oct 31 08:46 include
drwxr-xr-x 2 root root 4096 Aug 1 2003 modules
Just like you have.
The problem here is pkg-config doesn't have all of the ".pc" files
stuffed somewhere that describe the packages as gEDA needs to see
them. Who is supposed to supply all this nonstandard stuff?
Agreed, I made the change to ld.so.conf, and this problem went away.
I don't understand it either, but I had the previous version of gSchem
working. PCB has worked just fine all along (and still does)
[snip]
My configuration is the same as vanilla shrike. My packages have been
upgraded to the latest bug fixes, that is all.
Yes, I eventually got busy, and let it run to completion on its own.
The repeated rebuilding of the symbol libraries easily slowed the process down by
10 to 20 times.
18 days isn't all that long. Have you heard of any *new* users that[snip]
I have a definite desire for gEDA to succeed, as I think
GPL'd software is the future. But at this stage, gEDA 20041228
shouldn't have been released to the public. If a guy like me who
[snip]
Interestingly enough, 20041228 has been out for ~18 days and
I haven't heard of anybody else having build problems (using gtk+
2.2.x/2.4.x; trying to compile with gtk+ 2.6.x is another matter
because of a function name clash in my code, already fixed in CVS
have successfully built the system? That would be a more interesting
bit of information.
-Chuck Harris
Guest
I think they are both voltage feedback devices, the first one being an
AD828, with the two resistors, and the second an EL2244 using on the one
feedback resistor.
Not sure that the means to the solution, but I know I ought to have
included that info in the original post
Thanks,
John
J
Joerg
Guest
Hello John,
The first example has a gain defined by the resistor ratio. The second one is a follower without voltage gain, mostly used to provide an output drive with a low enough impedance.
In the video world you normally need voltage gain whenever there is a source termination, and they use that kind of termination a lot. IOW, when there is a 75 Ohm resistor in series to an output to make sure there will be no reflections on a coax cable even if the termination at the far end isn't so stellar. This 75Ohm will then form a voltage divider with the coax, assuming it also has 75Ohm impedance. This causes the signal to drop by 6dB in amplitude (to half its voltage) which can be made up by an amp that offers 6dB gain.
Regards, Joerg
http://www.analogconsultants.com
The first example has a gain defined by the resistor ratio. The second one is a follower without voltage gain, mostly used to provide an output drive with a low enough impedance.
In the video world you normally need voltage gain whenever there is a source termination, and they use that kind of termination a lot. IOW, when there is a 75 Ohm resistor in series to an output to make sure there will be no reflections on a coax cable even if the termination at the far end isn't so stellar. This 75Ohm will then form a voltage divider with the coax, assuming it also has 75Ohm impedance. This causes the signal to drop by 6dB in amplitude (to half its voltage) which can be made up by an amp that offers 6dB gain.
Regards, Joerg
http://www.analogconsultants.com
R
Rich Grise
Guest
On Sun, 16 Jan 2005 10:25:16 +0000, Stuart Brorson wrote:
ld.so.conf already, and when I read Ales's recommendation to use LD_<etc>,
I was reminded of this:
http://www.visi.com/~barr/ldpath.html
The way I understand it, LD_<etc> was intended as a temporary thing, for
development or something; essentially, they say don't use it because it's
a clooge. (not that I would have the G*D* gall to complain to one who has
put his heart and soul into a work of GPL-ware. )
Thanks!
Rich
Two things: I have Slack 10.0, and /usr/local/lib is the first entry in my
ld.so.conf already, and when I read Ales's recommendation to use LD_<etc>,
I was reminded of this:
http://www.visi.com/~barr/ldpath.html
The way I understand it, LD_<etc> was intended as a temporary thing, for
development or something; essentially, they say don't use it because it's
a clooge. (not that I would have the G*D* gall to complain to one who has
put his heart and soul into a work of GPL-ware.
)Thanks!
Rich
R
Rich Grise
Guest
On Sun, 16 Jan 2005 14:33:10 +0000, L.Chung wrote:
part, the circuit is supposed to operate normally.
What you need to do is diagnose the actual problem that is causing your
HOT to let the magic smoke out, then when the rest of the circuit is
repaired (and the HOT replaced for the last time), your new HOT will work
just fine.
Good Luck!
Rich
I have no idea where you got this idea. When you replace the defective
part, the circuit is supposed to operate normally.
What you need to do is diagnose the actual problem that is causing your
HOT to let the magic smoke out, then when the rest of the circuit is
repaired (and the HOT replaced for the last time), your new HOT will work
just fine.
Good Luck!
Rich