low noise resistor

[Eeyore]

Well how many people have that lame "rabbitsfirendsandidiots" email?

What's that got to do with posting through Google ?

I have NEVER had an account terminated.

Graham

 

[Fred Bloggs]

Fred Bloggs wrote:




What's that got to do with posting through Google ?

I have NEVER had an account terminated.

Graham

Of course you're going to say that, it's part and parcel with your
psychosis.

 

[Eeyore]

Of course you're going to say that, it's part and parcel with your
psychosis.

I suggest you find even a single example of me posting through Google. Should be
easy enough. Google has extensive records AIUI.

If you can't then SHUT UP.

As for psychosis you're apparently the expert, having magicked up some mythical
google account you imagine I have.

Graham

 

[Fred Bartoli]

Le Fri, 17 Aug 2007 16:09:54 +0200, Martin Griffith a écrit:

The data is filed under "climate change"


Martin

Does this mean that "climate change" is just one of the current noises?

 

[Fred Bloggs]

Fred Bloggs wrote:




I suggest you find even a single example of me posting through Google. Should be
easy enough. Google has extensive records AIUI.

If you can't then SHUT UP.

As for psychosis you're apparently the expert, having magicked up some mythical
google account you imagine I have.

Graham

Typical schizoid response, this is too classic...

 

[Eeyore]

Martin Griffith a écrit:

Does this mean that "climate change" is just one of the current noises?

To call it merely a noise would be an understatement.

Graham

 

[Phil Allison]

"Fred Bartoli = CRIMINAL ASSHOLE"


** **** OFF


- you pile of stinking


AUTISTIC FASCIST FROG SHIT






....... Phil

 

[Eeyore]

Typical schizoid response, this is too classic...

You're a typical IDIOT.

I'm waiting for evidence I ever posted through Google.

Graham

 

[John Larkin]

Right, otherwise known as thermoelectric effect. You can make a pretty
good people detector using that.

Thermoelectrics and, when the voltages across dividers is high, just
the temperature coefficient of the resistors themselves. Much worse if
the resistors are dissipating any amount of power: in that case, micro
air currents modulate the resistor cooling hence temperature a lot
more than if the resistor is passively following air temperature.

A similar effect is close-in sideband noise in crystal oscillators and
especially TCXO's, where putting a cover over the oscillator is as
good as spending 10 times the money on a better part.

I wonder how many measurements of resistor "excess noise" are
confounded by these other effects. A bunch, I'd bet. That would help
explain why the measurements seem to be so inconsistant.

John

 

[John Larkin]

"John Larkin About Fuckwit TROLL "





** A blind man's opinion of the view.




** Yawn ............




** So the trolling, autistic fool has no experience to draw from.




** A blind man's opinion of the view.

It all looks dark to him.




....... Phil

I've done experiments to measure excess noise on a variety of
resistors, and never resolved any noise-versus-bias voltage effects
with a measurement floor close to Johnson. What have you done?

John

 

[Phil Allison]

"John Larkin Fucking MORON "

I wonder how many measurements of resistor "excess noise" are
confounded by these other effects. A bunch, I'd bet. That would help
explain why the measurements seem to be so inconsistant.

** A blind man's opinion of the view.

If there's voltage across them, some may have "excess noise",
which should in theory be very small for metal film resistors.

** So the trolling, autistic fool has no experience to draw from.

I've
tried to measure the excess noise of various expensive (thin film) and
dirt-cheap (cermet and carbon film) resistors, without success; they
all seem the same.

** A blind man's opinion of the view.

It all looks dark to him.




........ Phil

 

[GregS]

Le Fri, 17 Aug 2007 16:09:54 +0200, Martin Griffith a écrit:



Does this mean that "climate change" is just one of the current noises?

Is it getting noisier?

greg

 

[Phil Allison]

"John Larkin Autistic FUCKING MORON "

I've done experiments to measure excess noise on a variety of
resistors, and never resolved any noise-versus-bias voltage effects...

** Any LYING fool can claim any damn stupid thing.

There is any amount of credible literature on the topic.

Try reading up on maker's specs for a start


- YOU VILE ASD FUCKED FUCKWIT !!!





....... Phil

 

[Michael A. Terrell]

** Any LYING fool can claim any damn stupid thing.

You do. Quite often.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

[John Larkin]

"John Larkin Autistic FUCKING MORON "




** Any LYING fool can claim any damn stupid thing.

There is any amount of credible literature on the topic.

Try reading up on maker's specs for a start


- YOU VILE ASD FUCKED FUCKWIT !!!





...... Phil

Ah, you read about life instead of living it.

John

 

[John Larkin]

"John Larkin Fucking MORON "



** A blind man's opinion of the view.




** So the trolling, autistic fool has no experience to draw from.




** A blind man's opinion of the view.

It all looks dark to him.




....... Phil

Audio amateurs always have strong opinions.

John

 

[Eeyore]

I've done experiments to measure excess noise on a variety of
resistors, and never resolved any noise-versus-bias voltage effects
with a measurement floor close to Johnson. What have you done?

John

 

[Michael A. Terrell]

Ah, you read about life instead of living it.

He doesn't have time for a life. It takes all his time to be a
blithering idiot, feeding all those cats, and doing unspeakable things
to toasters, and other small appliances.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

[Robert Baer]

What type of resistors are low noise resistors? i am using surface
mount (SMD) resistors. I learnt that there are thick film and thin
film resistors. Which types of SMD resistors have lowest noise? kindly
enlighten on this.
Thanks
Kristo

I gave an answer to this on another NG; DigiKey carries a brand that
is rather low noise (thin film).

 

[Tobin Fricke]

Where did you get that bit of mis-information? Metal film SMD resistors
are usually good enough.

The trick to low noise design is mostly a matter of decoupling or
mis-matching the noise sources in a circuit. I've made amplifiers with
300pV/rt(Hz) input-referred noise and 50 Ohm input resistance, despite
opinions that one could never get below about 0.5nV/rt(Hz) in a wideband
matched system.

Hi Jeroen,

Could you share details of your design? I'm hoping to get somewhere
between 0.4 and 1.0 nV/rtHz using an IF3602 long-tailed-pair stage before
an LT1128 opamp.

thanks,
Tobin Fricke http://web.pas.rochester.edu/~tobin/