On Tue, 2009-05-05 at 08:29 -0600, Robin Laing wrote:
Another issue is using capacitors that are close to the operating
voltage of the system. 12V and use 15V capacitors. This doesn't give
any overhead for voltage spikes or surges caused by charging and
discharging circuits.
For
David Liguori wrote:
Aldo Foot wrote:
On Wed, Apr 29, 2009 at 7:23 PM, Robert L Cochran
cochr...@speakeasy.net wrote:
One of the more common mechanisms for failure of electrolytic capacitors
is too high an ambient temperature over a period of time. Usually the
temperature rating is on
Aldo Foot wrote:
On Wed, Apr 29, 2009 at 7:23 PM, Robert L Cochran
cochr...@speakeasy.net wrote:
Has the device firmware been pharmed or simply partly flashed and then a
power failure struck?
If you would like to donate the unit to me, I'll try to find the time to
take a look at it in the
On 05/04/2009 04:19 PM, David Liguori wrote:
Aldo Foot wrote:
On Wed, Apr 29, 2009 at 7:23 PM, Robert L Cochran
cochr...@speakeasy.net wrote:
Has the device firmware been pharmed or simply partly flashed and
then a
power failure struck?
If you would like to donate the unit to me, I'll try
On Mon, May 4, 2009 at 1:19 PM, David Liguori liguo...@albany.edu wrote:
. You say the room is well-ventilated but
that doesn't rule out too high an ambient temperature in a room full of
equipment, especially if it was sitting on top of or in a rack full of other
equipment. .
On Mon, May 4, 2009 at 1:35 PM, Robert L Cochran cochr...@speakeasy.net wrote:
Nuts and Volts did a photo of the workshop of a highly skilled electronics
hobbyist who gets all his stuff from junk piles, then fixes and reuses the
items. That is my nature too. It must come from my grandfather.
Aldo Foot wrote:
On Mon, May 4, 2009 at 1:19 PM, David Liguori liguo...@albany.edu wrote:
. You say the room is well-ventilated but
that doesn't rule out too high an ambient temperature in a room full of
equipment, especially if it was sitting on top of or in a rack full of other
On Mon, 2009-05-04 at 16:19 -0400, David Liguori wrote:
One of the more common mechanisms for failure of electrolytic
capacitors is too high an ambient temperature over a period of time.
Usually the temperature rating is on the cap. You say the room is
well-ventilated but that doesn't rule
max wrote:
What's a good electronics book? I'm looking for a beginner to intermediate
skill level type book.
a good question.
i can only answer with, i started reading electronic books in library at
around age of 9. i started working part time in a radio/tv repair shop at
13. correspondence
g wrote:
Robert L Cochran wrote:
On 04/30/2009 02:47 PM, Aldo Foot wrote:
snip
The unit has a blown capacitor, bulged and brown matter around it. Also there is
snip
You probably have Chinese- or Taiwanese-manufactured capacitors in that
unit, which are not as reliable
g wrote:
max wrote:
What's
a good question.
if you have
my apoligies to list for my 'ot' reply.
my apoligies to max for my chastising close. my reply should have
consisted of simple 'please contact me off list'.
first coffee had not 'done it's thing'. :)
--
peace out.
tc,hago.
g
.
g wrote:
Robert L Cochran wrote:
On 04/30/2009 02:47 PM, Aldo Foot wrote:
snip
The unit has a blown capacitor, bulged and brown matter around it. Also there is
snip
You probably have Chinese- or Taiwanese-manufactured capacitors in that
unit, which are not as reliable as
Robin Laing wrote:
Fedora 11 will have a software group for electronics. :)
fel, already out, tho a specific field, is a very good release for
circuit design.
--
peace out.
tc,hago.
g
.
in a free world without fences, who needs gates.
**
help microsoft stamp out piracy - give linux
On Fri, 2009-05-01 at 14:03 +, g wrote:
max wrote:
What's a good electronics book? I'm looking for a beginner to intermediate
skill level type book.
a good question.
i can only answer with, i started reading electronic books in library at
around age of 9. i started working part
On Fri, May 1, 2009 at 9:33 AM, Robin Laing robin.la...@drdc-rddc.gc.ca wrote:
As for spending the money and time to fix a low cost switch is not worth it
except for experience.
I agree. I'd do it more for the sake of being green and not waste 90% of the
unit.
I learned that small units like
Les wrote:
I would add that the brain is marvelous at relating information.
snip
will encounter, and the effort needed to correct them.
this is true.
Like G, I started a long time ago, from vacuum tubes,
how long before your finger prints came back? :)
Almost everything I ever learned
On Fri, May 1, 2009 at 11:07 AM, Les hlhow...@pacbell.net wrote:
G is right on all counts. ...
That said, if you start with a few beginner articles,
and please do the exercises they have, you will learn. The exercises
are important to lock the information with the potential errors that you
On Fri, 2009-05-01 at 12:24 -0700, Aldo Foot wrote:
Man... you guys actually saw the birth of computers. It's like having
been present at moment of the Big Bang.
I can only imagine you blowing up light bulbs in the garage. :-)
Printing his own Holerith cards. Breadboarding his first personal
Tim wrote:
Printing his own Holerith cards. Breadboarding his first personal
computer... ;-) Laughing at Windows *KNOWING* why it's so bad...
i did do a lot of breadboarding with logic circuits and my first micro
was a z80 starter kit that i built to learn machine code.
actually i laughed
Tim wrote:
Just because it's not a mainframe doesn't mean that it doesn't need
special computer airconditioning to keep it cool...
you got that right.
first thing i add to my own and clients' computers is at least 1 extra fan.
i even remove power supply and remount fan to draw air out
Aldo Foot wrote:
Man... you guys actually saw the birth of computers. It's like having been
present at moment of the Big Bang.
it was. i started reading with 4004 oem manual.
i still get a bang out of playing with them. i say 'play' because i enjoy
what i do and it is no way near what i call
On Fri, 2009-05-01 at 11:41 -0700, Aldo Foot wrote:
I learned that small units like the one I have will eventually die.
It's just a matter of time. It appears to be specially true if all the
ports are used 24/7, which is my case. High transfer rates create
heat, which causes the caps to blow.
On Friday 01 May 2009, Aldo Foot wrote:
On Fri, May 1, 2009 at 11:07 AM, Les hlhow...@pacbell.net wrote:
G is right on all counts. ...
That said, if you start with a few beginner articles,
and please do the exercises they have, you will learn. The exercises
are important to lock the
On Wed, Apr 29, 2009 at 7:23 PM, Robert L Cochran
cochr...@speakeasy.net wrote:
Has the device firmware been pharmed or simply partly flashed and then a
power failure struck?
If you would like to donate the unit to me, I'll try to find the time to
take a look at it in the next few months. I'm
On 04/30/2009 02:47 PM, Aldo Foot wrote:
On Wed, Apr 29, 2009 at 7:23 PM, Robert L Cochran
cochr...@speakeasy.net wrote:
Has the device firmware been pharmed or simply partly flashed and then a
power failure struck?
If you would like to donate the unit to me, I'll try to find the time
Robert L Cochran wrote:
On 04/30/2009 02:47 PM, Aldo Foot wrote:
snip
The unit has a blown capacitor, bulged and brown matter around it. Also
there is
snip
You probably have Chinese- or Taiwanese-manufactured capacitors in that
unit, which are not as reliable as Japanese-manufactured
On Fri, May 01, 2009 at 03:18:26AM +, g wrote:
yes. i am a 'hardware head' and i have seen this problem, even with an abit
mainboard of my own.
What's a good electronics book? I'm looking for a beginner to intermediate
skill level type book.
--
Any fool can know. The point is to
I have this Netgear Switch GS108 that has apparently failed. Before I
buy a new one I'd
like to know whether this is known issue with this type of unit or
Netgear hardware in
general. This unit I have is an 8-port switch.
I perused some reading here and there and they point out to faulty
Aldo Foot wrote:
I have this Netgear Switch GS108 that has apparently failed. Before I
buy a new one I'd
like to know whether this is known issue with this type of unit or
Netgear hardware in
general. This unit I have is an 8-port switch.
I perused some reading here and there and they point out
Has the device firmware been pharmed or simply partly flashed and then a
power failure struck?
If you would like to donate the unit to me, I'll try to find the time to
take a look at it in the next few months. I'm still very much an
amateur, and I'd like to try analyzing why the unit is not
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