Driver to drive?

Skybuck Flying · Feb 16, 2009

"Sylvia Else" <sylvia@not.at.this.address> wrote in message
news:0023d882$0$17565$c3e8da3@news.astraweb.com...

Skybuck Flying wrote:
If the corrupted memory is memory containing the sound data, then one
would have to wonder how you suspected memory corruption in the first
place.

Any other process could be corrupting the memory simply be writing to
it...

Program A writes 5 to memory cell 4.

Program B writes garbage to memory cell 4.

However this only happens during sound playback...

For example the programs are some kind of kernel/driver related thingy

Seems like you've narrowed the problem to be solved to that of finding
faults in sound card drivers when used for playback, rather than the
detection of general memory corruption issues.

Anything could be causing the corruption so that's why I included: "or
system" in the subject to describe any possible system

as well as in the
posting via "system/software/hardware"

Bye,
Skybuck.

Skybuck Flying · Feb 16, 2009

Message received, interesting theory thank you !

However I have fan blowing cool air towards the harddisks.

However there is some dust in the dust filter.

And there are cables at the end which might block a bit of the airflow.

The question therefore is how hot are the chips getting.

A cool idea would be to add sensors to the harddisks just like other
equipment has nowadays therefore I am going to add the hardware newsgroup
again so people see this idea ! hopefully !

Besides if this theory was the cause then it would have to be all the
time... but that does not seem to be the case ?!

Bye,
Skybuck.

"Lukasz Adamowski" <corewars@wp.pl> wrote in message
news:gncehp$fqf$1@atlantis.news.neostrada.pl...

Skybuck Flying wrote:
I love hearing any theories you might have ?!

My diagnosis (based on my computer first-aid previous work): the
overheated chips of your HDD (or controller) started making "noise" on
power cables. Check the PSU voltage if you want your computer to keep
alive.
Or maybe you have unmuted audio line-in input with CD connected to your
sound card by an old-fashioned analog cable, haven't you? The inside of
the computer is always full of EM noises from all this plastic-metal junk,
remember!

BTW I'm testing newsgroup server, not sure if you will get this message at
all.

Lukasz Adamowski

Archimedes' Lever · Feb 17, 2009

On Mon, 16 Feb 2009 23:22:51 +1100, Sylvia Else
<sylvia@not.at.this.address> wrote:

TheM wrote:
"Sylvia Else" <sylvia@not.at.this.address> wrote in message news:00841295$0$18793$c3e8da3@news.astraweb.com...
Skybuck Flying wrote:
Hello,
(I think system got corrupted after millions of reads or writes... or maybe some part of the memory became active because of high
memory usage which is normally inactive/unused (?))

Bye,
Skybuck !
Seems to me that this just amounts to reading the memory and checking that it contains what it should, except that the reading is
slow and the checking rather imprecise.

Sylvia.

http://home1.stofanet.dk/viking/Do-not-feed-the-troll.jpg

M

If I want to feed a troll, I will. Providing sustenance to lower forms
of life appeals to my nurturing instincts.

Sylvia.

Then you must be as fat as a fucking tank.

Sylvia Else · Feb 17, 2009

Archimedes' Lever wrote:

On Mon, 16 Feb 2009 23:22:51 +1100, Sylvia Else
sylvia@not.at.this.address> wrote:

TheM wrote:
"Sylvia Else" <sylvia@not.at.this.address> wrote in message news:00841295$0$18793$c3e8da3@news.astraweb.com...
Skybuck Flying wrote:
Hello,
(I think system got corrupted after millions of reads or writes... or maybe some part of the memory became active because of high
memory usage which is normally inactive/unused (?))

Bye,
Skybuck !
Seems to me that this just amounts to reading the memory and checking that it contains what it should, except that the reading is
slow and the checking rather imprecise.

Sylvia.
http://home1.stofanet.dk/viking/Do-not-feed-the-troll.jpg

M

If I want to feed a troll, I will. Providing sustenance to lower forms
of life appeals to my nurturing instincts.

Sylvia.

Then you must be as fat as a fucking tank.

As a line of reasoning, that doesn't even make sense.

Sylvia.

krw · Feb 17, 2009

On Tue, 17 Feb 2009 12:59:56 +1100, Sylvia Else
<sylvia@not.at.this.address> wrote:

Archimedes' Lever wrote:
On Mon, 16 Feb 2009 23:22:51 +1100, Sylvia Else
sylvia@not.at.this.address> wrote:

TheM wrote:
"Sylvia Else" <sylvia@not.at.this.address> wrote in message news:00841295$0$18793$c3e8da3@news.astraweb.com...
Skybuck Flying wrote:
Hello,
(I think system got corrupted after millions of reads or writes... or maybe some part of the memory became active because of high
memory usage which is normally inactive/unused (?))

Bye,
Skybuck !
Seems to me that this just amounts to reading the memory and checking that it contains what it should, except that the reading is
slow and the checking rather imprecise.

Sylvia.
http://home1.stofanet.dk/viking/Do-not-feed-the-troll.jpg

M

If I want to feed a troll, I will. Providing sustenance to lower forms
of life appeals to my nurturing instincts.

Sylvia.

Then you must be as fat as a fucking tank.

As a line of reasoning, that doesn't even make sense.

Why would you expect AlwaysWrong make any sense?

Feb 20, 2009

On Feb 19, 7:41 pm, makol...@yahoo.com wrote:

sunspots and power failures urban legend or for real?

I've been reading about the sunspot minimum we are having and almost
anything you read about sunspots mentions that they have been known to
cause power failures. So I'm thinking about this. Power lines are
designed to work through lightning hits.. How can sunspots disrupt a
power line?

I can imagine for myself a few ways that it might be possible so I am
not asking for a way that you IMAGINE it might be possible.

I am asking does anyone out there KNOW of a case that it actually
happened and what was the real mechanism? Maybe some real numbers ?

thanks
Mark

The Sun has a large magnetic field. We also orbit inside the Sun's
atmosphere which consists of fast moving charged particles.
The Earth-Sun system is a dynamo inducing huge ground currents (as in,
in the ground), as well as other currents in the sky like aurora
borealis.
http://www.ofcm.gov/nswp-sp/text/hydro.htm

Quebec is more vulnerable than some due to the enormous distances
involved in our grid.
http://en.wikipedia.org/wiki/La_Grande_River

Jim Thompson · Feb 27, 2009

On Fri, 27 Feb 2009 11:24:16 -0800, Joerg
<notthisjoergsch@removethispacbell.net> wrote:

Jim Thompson wrote:
[snip]

I'm really happy with my filters. I'll share my info with anyone
running Agent v5 (required for Message-ID filtering).

To be honest I don't want to spend time massaging exceptions all the
time. There's always PM (where I haven't set a block).

Exceptions are trivial... there aren't very many ;-)

How I work it is I notice a thread of interest, discover that the OP
was reputable, drop his name, Message-ID, or whatever, into the
exception filter... very easy.

You sure complain a lot, then whine about difficulty.

Of course I actually paid money for my reader ;-)

...Jim Thompson
--
| James E.Thompson, P.E. | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice

Jim Thompson · Feb 27, 2009

On Fri, 27 Feb 2009 15:15:42 -0600, krw <krw@att.zzzzzzzzz> wrote:

In article <4d124216-89d7-4b13-a416-
b07dbed0711c@e1g2000pra.googlegroups.com>, jeffm_@email.com
says...
Ian Bell wrote:
Most ISPs these days provide newsnet access for free.
Mine has done for the last 10 years.

...then there are those on this side of the pond
who have posturing "public servants"
who have done their best to make that go away
--especially those folks in the Empire State:
http://www.google.com/search?q=Andrew-Cuomo+Usenet&num=100

In matters of digital freedom, many Democrats are NOT your friend.
http://www.google.com/search?q=site:slashdot.org+Feinstein&num=100

That's an excuse to shut down a loser.

D from BC · Feb 28, 2009

On Fri, 27 Feb 2009 16:11:49 -0800, Joerg
<notthisjoergsch@removethispacbell.net> wrote:

qrk wrote:
On Thu, 26 Feb 2009 19:40:45 -0800, D from BC
myrealaddress@comic.com> wrote:

I've seen a few schematics of opto's being used in linear mode for
smps designs..
But what about those digital isolators? Are they just for digital
circuits?

Right now I'm working on applying a digital isolator for a smps
design..
http://focus.ti.com/lit/ds/symlink/iso721.pdf
Note that the datasheet doesn't mention smps applications. hmmm

Anybody know some design examples of smps's using digital isolators
(opto digital, galvanic, GMR or RF)?

D from BC
myrealaddress(at)comic(dot)com
BC, Canada
Posted to usenet sci.electronics.design

I use both in switching power supplies. The analog opto for voltage
feedback, the digital isolator (Analog Devices ADuM1200 series) for
setting power supply voltage.

Three bucks for an isolator in a switcher? Yikes.

Relative to sluggish optos, the galvanic ISO721 is not cheap.
Probably the only reason I'm using it is to dodge modelling a fast
opto in ltspice.
Another reason I'm dodging a linear opto is that my smps design is
experimental and a poorly applied opto may cause loop stability
problems. If anything goes wrong, I can't blame an opto if it's not
there.

It's a tradeoff.. So the parts are expensive, but I get the design
done earlier.

D from BC
myrealaddress(at)comic(dot)com
BC, Canada
Posted to usenet sci.electronics.design

ehsjr · Feb 28, 2009

D from BC wrote:

For long time (perhaps years) I haven't been able to figure out why I
hear a random burst of noise from my audio PC system..

I finally found out why..

It's that stupid animated dog that shows up when using windows xp file
search..
The dog scratches itself and that makes a noise. I never noticed.
Clicking on the dog makes the scratching sounds too.

The dog can do tricks. As can the wizard.

Ed

I thought my computer had bugs or my PC was getting blasted by EMI.

Arrrrrghhhhh!!!

D from BC
myrealaddress(at)comic(dot)com
BC, Canada
Posted to usenet sci.electronics.design

Ross Herbert · Feb 28, 2009

On Fri, 27 Feb 2009 00:45:58 -0600, Tim Wescott <tim@seemywebsite.com> wrote:

:On Fri, 27 Feb 2009 00:44:57 -0600, Tim Wescott wrote:
:
:> On Thu, 26 Feb 2009 19:40:45 -0800, D from BC wrote:
:>
:>> I've seen a few schematics of opto's being used in linear mode for smps
:>> designs..
:>> But what about those digital isolators? Are they just for digital
:>> circuits?
:>>
:>> Right now I'm working on applying a digital isolator for a smps
:>> design.. http://focus.ti.com/lit/ds/symlink/iso721.pdf Note that the
:>> datasheet doesn't mention smps applications. hmmm

:>>
:>> Anybody know some design examples of smps's using digital isolators
:>> (opto digital, galvanic, GMR or RF)?
:>>
:>>
:>> D from BC
:>> myrealaddress(at)comic(dot)com
:>> BC, Canada
:>> Posted to usenet sci.electronics.design
:>
:> The recent ARRL handbooks have a design for an off-line switcher that
:> puts the controller on the secondary side, driving the primary-side
:> transistor bases through pulse transformers. For start up, the primary-
:> side circuit forms a relaxation oscillator that is triggered by the core
:> saturation; this gets the secondary side voltage ramping up so the
:> controller can start doing it's job.
:>
:> It uses the venerable LM3524 as the controller, so it's not like it
:> needs anything special.
:
:Sorry -- it's not in the 2009 Handbook, but it is in the 2002 edition.

I pulled a psu from a defunct Epson inkjet printer and it uses a similar setup
to your description. The mains input primary side switcher uses a mosfet
controlled by bjt's and the secondary side uses a L4962EA 1.5A smps controller
to produce a 42V output.

As for the OP's query, my initial reading is that the digital isolator cannot be
applied to smps feedback control. The output control of an smps relies on
sampling an analog voltage against a reference and producing an analog feedback
signal which is applied to the primary side switching control usually via an
opto-isolator. Using a digital isolator (which is quite complex in itself) would
likely entail conversion from analog to digital on the input side of the
isolator and then digital to analog on the secondary side in order to control
the primary side switching device. Also, the opto-isolator must have a 5kV
minimum galvanic isolation for mains inputs of 240Vac. Even if the digital
isolator could work it only has 4kV isolation.

nospam · Feb 28, 2009

Joerg <notthisjoergsch@removethispacbell.net> wrote:

I bought a non-expiring block of 8 gigabytes of usenet downloads about 5
years ago for something like $7. And i still have about 6GB left...

Just checked: You can get 8 gigabytes non-expiring for US $7.95

Hopefully it will help some folks.

That is a good deal. Although, at some point pricing enters the noise
region, at least for a business. $10-$15/year is in the noise

+ the cost of processing and paying the invoices annually, much better to
make one 'in the noise' payment that will last a decade or two.

Astranews does 25G for $10, doesn't expire, headers are free.
--

D from BC · Feb 28, 2009

On Sat, 28 Feb 2009 03:06:38 GMT, Ross Herbert
<rherber1@bigpond.net.au> wrote:

On Fri, 27 Feb 2009 00:45:58 -0600, Tim Wescott <tim@seemywebsite.com> wrote:

:On Fri, 27 Feb 2009 00:44:57 -0600, Tim Wescott wrote:
:
:> On Thu, 26 Feb 2009 19:40:45 -0800, D from BC wrote:
:
:>> I've seen a few schematics of opto's being used in linear mode for smps
:>> designs..
:>> But what about those digital isolators? Are they just for digital
:>> circuits?
:
:>> Right now I'm working on applying a digital isolator for a smps
:>> design.. http://focus.ti.com/lit/ds/symlink/iso721.pdf Note that the
:>> datasheet doesn't mention smps applications. hmmm
:
:>> Anybody know some design examples of smps's using digital isolators
:>> (opto digital, galvanic, GMR or RF)?
:
:
:>> D from BC
:>> myrealaddress(at)comic(dot)com
:>> BC, Canada
:>> Posted to usenet sci.electronics.design
:
:> The recent ARRL handbooks have a design for an off-line switcher that
:> puts the controller on the secondary side, driving the primary-side
:> transistor bases through pulse transformers. For start up, the primary-
:> side circuit forms a relaxation oscillator that is triggered by the core
:> saturation; this gets the secondary side voltage ramping up so the
:> controller can start doing it's job.
:
:> It uses the venerable LM3524 as the controller, so it's not like it
:> needs anything special.
:
:Sorry -- it's not in the 2009 Handbook, but it is in the 2002 edition.

I pulled a psu from a defunct Epson inkjet printer and it uses a similar setup
to your description. The mains input primary side switcher uses a mosfet
controlled by bjt's and the secondary side uses a L4962EA 1.5A smps controller
to produce a 42V output.

As for the OP's query, my initial reading is that the digital isolator cannot be
applied to smps feedback control. The output control of an smps relies on

I don't think so.
Once the analog error signal gets to a PWM (or other), the error
signal crosses into digital land.
This works when the PWM is on the secondary side.

sampling an analog voltage against a reference and producing an analog feedback
signal which is applied to the primary side switching control usually via an
opto-isolator. Using a digital isolator (which is quite complex in itself) would

Digital isolators are easy to apply and are easy to model.
My digital isolator model uses a buffer with only 5 parameters Td Tr
Tf Vh Vl..
I tried modelling a 6N135 linear opto, what a pita.

likely entail conversion from analog to digital on the input side of the
isolator and then digital to analog on the secondary side in order to control

If a mosfet gate is getting pulses, that's digital.. The mosfet driver
can get its signal instead from a digital isolator which gets pulses
from a secondary side PWM.

the primary side switching device. Also, the opto-isolator must have a 5kV
minimum galvanic isolation for mains inputs of 240Vac. Even if the digital
isolator could work it only has 4kV isolation.

4kV is fine for my prototype. I'm using 120Vac..

D from BC
myrealaddress(at)comic(dot)com
BC, Canada
Posted to usenet sci.electronics.design

Robert Baer · Feb 28, 2009

Martin Brown wrote:

Robert Baer wrote:

** Copied from an investment newsletter **

Chalk one up for dissent. Japanese scientists were smart enough to
find the fraud in the anthropogenic global warming hypothesis and then
had the balls to publicly disagree with the UN's Intergovernmental
Panel on Climate Change about it.

The Japan Society of Energy and Resources issued a report that says
global warming is related to solar activity, and the rise in global
temperatures was primarily a recovery from the so-called Little Ice
Age, which lasted from 1400 to 1800. Kanya Kusano, program director
for the Earth simulator at the Japan Agency for Marine-Earth Science &
Technology, says computer climate modeling used to support the manmade
global warming theory is like "ancient astrology."

If you think fraudulent climate science doesn't affect you
financially, you may wish to know that, according to The Politico,
there are now four climate change lobbyists for every member of Congress.

And we all know that the ethical standards of bankers and investment
advisers are beyond reproach so it must be true...

Japanese science can be pretty flaky. They still have people researching
Fleschmann and Pons style "cold fusion" and watching catfish to try and
predict earthquakes. Some of it is good but by no means all.

The society for "Energy and Resources" sounds very much like a fossil
fuel lobby group. AGW really only began to bite in the past 4 decades.
The bounce back from the Little Ice Age was over by then.

Regards,
Martin Brown
FYI, cold fusion has been verified and proven to be an alternate

approach to energy generation.
A lot cheaper and smaller than a Tokomak in the back yard...
**
Yes, bankers and congress critters and many government types are liars.
But ther are a few investment types are not,and if they quote a
report then that quote cannot be *their* lie.

Richard Henry · Feb 28, 2009

On Feb 27, 9:15 pm, Robert Baer <robertb...@localnet.com> wrote:

Martin Brown wrote:
Robert Baer wrote:

** Copied from an investment newsletter **

Chalk one up for dissent. Japanese scientists were smart enough to
find the fraud in the anthropogenic global warming hypothesis and then
had the balls to publicly disagree with the UN's Intergovernmental
Panel on Climate Change about it.

The Japan Society of Energy and Resources issued a report that says
global warming is related to solar activity, and the rise in global
temperatures was primarily a recovery from the so-called Little Ice
Age, which lasted from 1400 to 1800. Kanya Kusano, program director
for the Earth simulator at the Japan Agency for Marine-Earth Science &
Technology, says computer climate modeling used to support the manmade
global warming theory is like "ancient astrology."

If you think fraudulent climate science doesn't affect you
financially, you may wish to know that, according to The Politico,
there are now four climate change lobbyists for every member of Congress.

And we all know that the ethical standards of bankers and investment
advisers are beyond reproach so it must be true...

Japanese science can be pretty flaky. They still have people researching
Fleschmann and Pons style "cold fusion" and watching catfish to try and
predict earthquakes. Some of it is good but by no means all.

The society for "Energy and Resources" sounds very much like a fossil
fuel lobby group. AGW really only began to bite in the past 4 decades.
The bounce back from the Little Ice Age was over by then.

Regards,
Martin Brown

FYI, cold fusion has been verified and proven to be an alternate
approach to energy generation.
A lot cheaper and smaller than a Tokomak in the back yard...
**

????

Really? That is news. Tell us more.

Ross Herbert · Feb 28, 2009

On Fri, 27 Feb 2009 19:58:46 -0800, D from BC <myrealaddress@comic.com> wrote:

:On Sat, 28 Feb 2009 03:06:38 GMT, Ross Herbert
:<rherber1@bigpond.net.au> wrote:
:
:>
:>I pulled a psu from a defunct Epson inkjet printer and it uses a similar setup
:>to your description. The mains input primary side switcher uses a mosfet
:>controlled by bjt's and the secondary side uses a L4962EA 1.5A smps controller
:>to produce a 42V output.
:>
:>As for the OP's query, my initial reading is that the digital isolator cannot
:>be applied to smps feedback control. The output control of an smps relies on
:>
:
:I don't think so.

:Once the analog error signal gets to a PWM (or other), the error
:signal crosses into digital land.
:This works when the PWM is on the secondary side.

Take a look at the data sheet for a typical controller IC commonly used in SMPS,
eg. UC3842.

"Pin 2 - Voltage feedback - This is the inverting input of the Error Amplifier.
It is normally connected to the switching power supply output through a resistor
divider."

That says the feedback signal is analog, not digital.

In SMPS which don't use a PWM controller IC, the feedback signal is always
analog.

:>sampling an analog voltage against a reference and producing an analog
:>feedback signal which is applied to the primary side switching control usually
:>via an opto-isolator. Using a digital isolator (which is quite complex in
:>itself) would
:

igital isolators are easy to apply and are easy to model.
:My digital isolator model uses a buffer with only 5 parameters Td Tr
:Tf Vh Vl..
:I tried modelling a 6N135 linear opto, what a pita.

6N135 is not a good choice for SMPS feedback control imo. Why not use a device
which is designed and recognised for this application?
http://www.datasheetcatalog.org/datasheet/nec/PS2561-1-V.pdf

Another commonly used OC for f/b control in SMPS is the Sharp PC817 series.
There are others as well.
http://sharp-world.com/products/device/lineup/data/pdf/datasheet/pc817x_e.pdf

Joerg · Feb 28, 2009

Jim Thompson wrote:

On Fri, 27 Feb 2009 11:24:16 -0800, Joerg
notthisjoergsch@removethispacbell.net> wrote:

Jim Thompson wrote:
[snip]
I'm really happy with my filters. I'll share my info with anyone
running Agent v5 (required for Message-ID filtering).

To be honest I don't want to spend time massaging exceptions all the
time. There's always PM (where I haven't set a block).

Exceptions are trivial... there aren't very many ;-)

How I work it is I notice a thread of interest, discover that the OP
was reputable, drop his name, Message-ID, or whatever, into the
exception filter... very easy.

You sure complain a lot, then whine about difficulty.

Huh? No complaints here. Filtered google-domains to bucket, spam gone.

Of course I actually paid money for my reader ;-)

I didn't, although I wouldn't mind paying. Thunderbird filters rather well.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

Jim Thompson · Feb 28, 2009

On Sat, 28 Feb 2009 09:45:55 -0800, Joerg
<notthisjoergsch@removethispacbell.net> wrote:

Jim Thompson wrote:
On Fri, 27 Feb 2009 11:24:16 -0800, Joerg
notthisjoergsch@removethispacbell.net> wrote:

Jim Thompson wrote:
[snip]
I'm really happy with my filters. I'll share my info with anyone
running Agent v5 (required for Message-ID filtering).

To be honest I don't want to spend time massaging exceptions all the
time. There's always PM (where I haven't set a block).

Exceptions are trivial... there aren't very many ;-)

How I work it is I notice a thread of interest, discover that the OP
was reputable, drop his name, Message-ID, or whatever, into the
exception filter... very easy.

You sure complain a lot, then whine about difficulty.

Huh? No complaints here. Filtered google-domains to bucket, spam gone.

Can you white-list good guys who use googlegroups?

Of course I actually paid money for my reader ;-)

I didn't, although I wouldn't mind paying. Thunderbird filters rather well.

Joerg · Feb 28, 2009

nospam wrote:

Joerg <notthisjoergsch@removethispacbell.net> wrote:

I bought a non-expiring block of 8 gigabytes of usenet downloads about 5
years ago for something like $7. And i still have about 6GB left...

Just checked: You can get 8 gigabytes non-expiring for US $7.95

Hopefully it will help some folks.

That is a good deal. Although, at some point pricing enters the noise
region, at least for a business. $10-$15/year is in the noise

+ the cost of processing and paying the invoices annually, much better to
make one 'in the noise' payment that will last a decade or two.

Ok, that would take about 120 seconds of my work time (it's computerized).

Astranews does 25G for $10, doesn't expire, headers are free.

As long as those providers stay around it's a good deal. In America many
people will be cautious though, having experienced gift cards that
became worthless overnight when the store chain folded. But for biz it
doesn't really make a difference whether it's $10 for 25G, $8 for 8G or
$10/year.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

Joerg · Feb 28, 2009

Jim Thompson wrote:

On Fri, 27 Feb 2009 16:11:49 -0800, Joerg
notthisjoergsch@removethispacbell.net> wrote:

qrk wrote:
On Thu, 26 Feb 2009 19:40:45 -0800, D from BC
myrealaddress@comic.com> wrote:

I've seen a few schematics of opto's being used in linear mode for
smps designs..
But what about those digital isolators? Are they just for digital
circuits?

Right now I'm working on applying a digital isolator for a smps
design..
http://focus.ti.com/lit/ds/symlink/iso721.pdf
Note that the datasheet doesn't mention smps applications. hmmm

Anybody know some design examples of smps's using digital isolators
(opto digital, galvanic, GMR or RF)?

D from BC
myrealaddress(at)comic(dot)com
BC, Canada
Posted to usenet sci.electronics.design
I use both in switching power supplies. The analog opto for voltage
feedback, the digital isolator (Analog Devices ADuM1200 series) for
setting power supply voltage.

Three bucks for an isolator in a switcher? Yikes.

Spricht so "El Cheapo" Joerg ;-)

Si, puedo construir una placa de circuito para todo con eso

--
Cordialmente, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

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