Lookinf for options for an Absolute Magnitude" or precision rectifier circuit.

[Clarence_A]

"richard mullens" wrote

Fred Bloggs vomited:

Actually, none have failed. Just the performance is poor! With no
negative supply, there is no swing just clamping.

Fred's nonsense remarks here:

It seems that Clarence_A may unwittingly be Osama's secret

weapon.

Fred ignores the fact that I found the problem, and will fix it.
It was NOT MY DESIGN, it is an Application note with an (horror)
error. As if we haven't all found those. I only ask for
verification, since anyone who thinks they are always right, or
are perfect aren't!

But Fred would have never found it, he isn't a working engineer,
he's on welfare!

This is his usual mud slinging and an attempt to pull down
everything to his level. I PLONKED him long ago and do not miss
his foul mouth and poor manners!

 

[richard mullens]

"richard mullens" wrote


very edge of



Actually, none have failed. Just the performance is poor! With no
negative supply, there is no swing just clamping.

Fred's nonsense remarks here:


the AM


is not only


inversion. There


Volts RMS"


transistors are


voltage below


something on the


to Vs+


Vout~5mV or


amplify this


cycle- and


range. I


weapon.

Fred ignores the fact that I found the problem, and will fix it.
It was NOT MY DESIGN, it is an Application note with an (horror)
error. As if we haven't all found those. I only ask for
verification, since anyone who thinks they are always right, or
are perfect aren't!

But Fred would have never found it, he isn't a working engineer,
he's on welfare!

This is his usual mud slinging and an attempt to pull down
everything to his level. I PLONKED him long ago and do not miss
his foul mouth and poor manners!

We all have points of view here. I'm not certain that one can say that any one's person's view is any more legitimate than an
other's. In the end, it all comes down to evidence or in some cases the lack of it !

Anyway, I'm sure that you must appreciate the joy I felt when that idea came into my head.

 

[John Larkin]

Since I need to change what the "app note paste artist" put
together, I need to refute his premise that "it wouldn't be
published if it wasn't correct."

Ha! Read the "ideas for design" clips in ED or EDN. Typically
nonsense.

John

 

[John Larkin]

In addition to knowing nothing about the 291, you can't read- the AM
Rating was obviously intent on saying GND+/-10V,

ABSOLUTE MAXIMUM RATINGS 1, 2
Supply Voltage . . . . . . . .. . . . . . . 16 V
Input Voltage . . . . . . . . . . . . . . . GND to VS 10 V


Is that what "GND to VS 10V" means? It looked like a misprint of "GND
to VS+10V" to me. I admit I didn't study the entire datasheet, this
being a newsgroup and I having real work to do of my own.

Why can't people proof datasheets?

Never mind- will not waste time on that individual...

Oh, please don't waste any of your valuable time on any of us.

John

 

[Fred Bloggs]

Fred ignores the fact that I found the problem, and will fix it. It
was NOT MY DESIGN, it is an Application note with an (horror) error.

There is no "horror" error in that circuit- it is very well- designed
and a solid product. It is less than 1% error for the specified signal
level. You are an incompetent p.o.s. and you can't "fix" anything. It
was immediately clear to me how to do this- but it will a cold day in
hell before I tell you.

As if we haven't all found those. I only ask for verification, since
anyone who thinks they are always right, or are perfect aren't!

Anyone who thinks he/she/it can just hack any old rectifier ckt
to work at "10mVRMS", single supply or not, and not encounter problems
is a ***MORON***.***MORONS*** EVERYWHERE *ALWAYS* LACK SENSE OF SCALE.

But Fred would have never found it, he isn't a working engineer, he's
on welfare!

I take that as a compliment seeing as how you just slandered AD app
dept- a group that wouldn't consider the likes of you to do so much as
empty the garbage cans.

*ANYONE* who subcontracts anything to you should be fired- must be a
mindless application of the low-bidder mentality-or maybe an ethnic
quota thing to look at your pathetic broken English- whatever, they will
regret it.
[...snip moronic bs...]

You should drop dead- I'm sure there is a consensus on that.

You're typical of what I've encountered on USENET- a second rate little
blowhard of nearly zero intelligence and/or worth- a very dull
uninteresting person devoid of know-how.

 

[John Larkin]

Your roller clutches are equivalent to ratchet wheels, and diodes.

A good roller clutch is like a schottky diode, or almost an ideal
diode. They are amazing: no perceptable backlash or deadband, and very
little reverse leakage.

John

 

[Fred Bloggs]

ABSOLUTE MAXIMUM RATINGS 1, 2
Supply Voltage . . . . . . . .. . . . . . . 16 V
Input Voltage . . . . . . . . . . . . . . . GND to VS 10 V

I already told you what they meant- try improving your reading
comprehension.

 

[martin griffith]

I read in sci.electronics.design that John Larkin <jjSNIPlarkin@highTHIS
landPLEASEtechnology.XXX> wrote (in <f1ja01d165rcirkpdo1o77q4mr793v2iic@
4ax.com>) about 'Lookinf for options for an Absolute Magnitude" or
precision rectifier circuit.', on Sat, 5 Feb 2005: snip
Unfortunately, the kid
wouldn't let me steal it to see in detail how it works. (;-)

tut,tut, stealing from little children, maybe you should go into
politics or religion



martin

Serious error.
All shortcuts have disappeared.
Screen. Mind. Both are blank.

 

[fuclarence]

Fred ignores the fact that I found the problem, and will fix it. It
was NOT MY DESIGN, it is an Application note with an (horror) error.

There is no "horror" error in that circuit- it is very well- designed
and a solid product. It is less than 1% error for the specified signal
level. You are an incompetent p.o.s. and you can't "fix" anything. It is
immediately clear to me how to do this- but it will be a cold day in
hell before I tell you.

As if we haven't all found those. I only ask for verification, since
anyone who thinks they are always right, or are perfect aren't!

Anyone who thinks he/she/it can just hack any old rectifier ckt
to work at "10mVRMS", single supply or not, and not encounter problems
is a ***MORON***.***MORONS*** EVERYWHERE *ALWAYS* LACK SENSE OF SCALE.

But Fred would have never found it, he isn't a working engineer, he's
on welfare!

I take that as a compliment seeing as how you just slandered AD app
dept- a group that wouldn't consider the likes of you to do so much as
empty the garbage cans.

*ANYONE* who subcontracts anything to you should be fired- must be a
mindless application of the low-bidder mentality-or maybe an ethnic
quota thing to look at your pathetic broken English- whatever, they will
regret it.
[...snip moronic bs...]

You should drop dead- I'm sure there is a consensus on that.

You're typical of what I've encountered on USENET- a second rate little
blowhard of nearly zero intelligence and/or worth- a very dull
uninteresting person devoid of know-how.

Why don't you plonk this and run- you little tutu wearing flake...

 

[Jim Thompson]

[snip]

Why don't you plonk this and run- you little tutu wearing flake...

Sheeesh! What have we come to? Even Fred has to resort to an alias
to get read.

FuFred ;-)

...Jim Thompson

 

[John Woodgate]

I read in sci.electronics.design that martin griffith
[email protected]>) about 'Lookinf for options for an Absolute Magnitude" or
precision rectifier circuit.', on Sun, 6 Feb 2005:

On Sun, 6 Feb 2005 08:12:52 +0000, in sci.electronics.design John

tut,tut, stealing from little children, maybe you should go into
politics or religion

I said I DIDN'T steal it. Maybe YOU should go into politics or
religion.(;-)

 

[Winfield Hill]

Jim Thompson wrote...

What a crock! Relies on rail-to-rail OpAmp with negative rail of
first stage tied to ground :-(

Yes it's ugly, but probably works fine, provided it's DC coupled...
The input stage safely draws a fraction of a mA for negative voltages
(see fig 3) but is OK; the other opamp works fine inverting the signal.

But I doubt this circuit can do well at low voltages. I have another
configuration I prefer for mV-level active rectification, which even
works well at MHz frequencies.

 

[Fred Bloggs]

ABSOLUTE MAXIMUM RATINGS 1, 2 Supply Voltage . . . . . . . .. . . . .
. . 16 V Input Voltage . . . . . . . . . . . . . . . GND to VS 10 V


Is that what "GND to VS 10V" means? It looked like a misprint of "GND
to VS+10V" to me. I admit I didn't study the entire datasheet, this
being a newsgroup and I having real work to do of my own.

Why can't people proof datasheets?




Oh, please don't waste any of your valuable time on any of us.

I see now that we were crediting the fascist with far too much
observational ability- all he was doing was SPICE simulation, and the AD
model does not begin to model input overdrive accurately- producing
phase reversal at ridiculously low overdrive. So the idiot hasn't even
gotten to square one- what a pathetic little loser- all he was doing was
looking a signal shapes and noticed a sine thingie where output should
be flat lined- my, my, my, what a stickler for detail he is! Why is it
all you Nazi types are so damned stupid....

 

[Jim Thompson]

Jim Thompson wrote...

Yes it's ugly, but probably works fine, provided it's DC coupled...
The input stage safely draws a fraction of a mA for negative voltages
(see fig 3) but is OK; the other opamp works fine inverting the signal.

But I doubt this circuit can do well at low voltages. I have another
configuration I prefer for mV-level active rectification, which even
works well at MHz frequencies.

Can we see that configuration?

(On custom I/C's I usually use multipliers to measure low-level RF.)

...Jim Thompson

 

[John Larkin]

I see now that we were crediting the fascist with far too much
observational ability- all he was doing was SPICE simulation, and the AD
model does not begin to model input overdrive accurately- producing
phase reversal at ridiculously low overdrive. So the idiot hasn't even
gotten to square one- what a pathetic little loser- all he was doing was
looking a signal shapes and noticed a sine thingie where output should
be flat lined- my, my, my, what a stickler for detail he is! Why is it
all you Nazi types are so damned stupid....

Usenet was apparently invented as the medium for proving that Fred is
smart and everybody else is stupid.

Right now, I'm writing the self-test code for the B-52 bomber radar
thing, which is a real drag. So, tell us about something cool you're
working on now and make us jealous.

John

 

[Clarence_A]

"John Larkin" <[email protected]>
wrote in message

Ha! Read the "ideas for design" clips in ED or EDN. Typically
nonsense.

John

You mean it "ISN'T" a joke? >)

 

[Clarence_A]

We all have points of view here. I'm not certain that one can

say that any one's person's view is any more legitimate than an
other's. In the end, it all comes down to evidence or in some
cases the lack of it !

Strange statement. Fred never has anything constructive to say to
me, or about me if he can fine someone to reply, since I never see
his postings!

Do you not see the difference between constructive comment and
deliberate nonsense? Remember that Fred Bloggs has nothing at
stake! I am the only one doing the design work on the electronics
of a critical piece of aircraft safety equipment. The design I
was told to "Modify, is ON aircraft now! Scares me, and I wasn't
the one who did the deed!

Anyway, I'm sure that you must appreciate the joy I felt when

that idea came into my head.

I am sure that the feeling was accompanied by the realization that
it meant you were still alive? Congratulations, that is certainly
something to celebrate.

Have a good day.

 

[Clarence_A]

wrote:

[snip]

Why don't you plonk this and run- you little tutu wearing

flake...

Sheeesh! What have we come to? Even Fred has to resort to an alias
to get read.

FuFred ;-)
...Jim Thompson

Gee, was that Freddy?

It did look like him! Or it rather sounded like him. He hasn't
changed at all.

I will be talking to the AD Engineer responsible for the product
on Monday to advise him and find if there is another explanation
for the problem. He wasn't in on Friday.

I do not work in a vacuum, and communicate with the responsible
parties at all venders I use.

By the way, many of the product people know me.
We have a beer at the various shows.
(I know, Wine would be better.)

 

[Fred Bloggs]

Right now, I'm writing the self-test code for the B-52 bomber radar
thing, which is a real drag. So, tell us about something cool you're
working on now and make us jealous.

Ehhh- big deal- that is a relatively small job...not to mention the
work statement has been reduced to the primitive level...yawn.

 

[Fred Bloggs]

"richard mullens" <[email protected]> wrote in

Do you not see the difference between constructive comment and
deliberate nonsense? Remember that Fred Bloggs has nothing at
stake!

I will not waste bandwidth posting a copy of all your moronic garbage
posts- a very sick and irrational non-entity you are.

I am the only one doing the design work on the electronics
of a critical piece of aircraft safety equipment.

You are not doing "design work"- you are a F_Up, and damned joke.

The design I
was told to "Modify, is ON aircraft now! Scares me, and I wasn't
the one who did the deed!

Well- good that you found a reason for life- too bad it is all a joke
firedrill- but be sure to raise a big storm over it so the hapless
idiots who hired you can find out you are a moron -too.

Have a good day.

GFOAD