.
So, what makes the HP3458A so expensive?
Attila Kinali
--
I pity people who can't find laughter or at least some bit of amusement in
the little doings of the day. I believe I could find something ridiculous
even in the saddest moment, if necessary. It has nothing to do
Moin moin,
On Sun, 6 Jul 2014 10:45:51 +0200
acb...@gmx.de wrote:
so for me, since I am also calibrating the unit myself,
I would be very much interested in how you calibrate the 3458 and
what you use as calibration standard.
Attila Kinali
--
I pity people who can't
).
Attila Kinali
--
I pity people who can't find laughter or at least some bit of amusement in
the little doings of the day. I believe I could find something ridiculous
even in the saddest moment, if necessary. It has nothing to do with being
superficial. It's a matter of joy in life
an listing of various circuits
with little explanation how to arrive on these circuits and how
to design those in.
Attila Kinali
--
It is upon moral qualities that a society is ultimately founded. All
the prosperity and technological sophistication in the world is of no
use
. They really did a good job of
introducing various circuits and how successfully build them if
you don't have any professional equipment.
Attila Kinali
--
It is upon moral qualities that a society is ultimately founded. All
the prosperity and technological sophistication
will not worry about tempco until
the fundamental problem is solved :-)
Attila Kinali
--
It is upon moral qualities that a society is ultimately founded. All
the prosperity and technological sophistication in the world is of no
use without that foundation
On Mon, 17 Aug 2015 15:16:05 +0200
Attila Kinali att...@kinali.ch wrote:
I have been pondering how to build a high resolution DAC over the weekend.
Something like [1] but has the disadvantage of needing a pair of resistors
that have a 1:2^16 ratio. The 1M/15.4R is kind of unwieldy.
Fidling
calibrate something like this?
Or am I missing something fundamental here?
Thanks in advance
Attila Kinali
[1] DC-accurate 32-bit DAC achieves 32-bit resolution,
by Stephen Woodward, 2008
--
It is upon moral qualities that a society is ultimately founded. All
On Mon, 17 Aug 2015 15:28:10 +0200
Azelio Boriani azelio.bori...@gmail.com wrote:
Best to ask volt-nuts?
I thought this was volt-nuts? ;-)
Attila Kinali
--
It is upon moral qualities that a society is ultimately founded. All
the prosperity and technological
of surprised that the charge injection of the MAX4053
does not kill a lot of the performance. At least i don't see any
way how it would cancel somewhere.
Attila Kinali
--
It is upon moral qualities that a society is ultimately founded. All
the prosperity and technological
.
But in [1], the LSK389 has a specified max input leakage of 200pA
while the LTC6241 has 75pA.
Could someone be so kind and enlighten me, why a JFET diff pair
makes sense in such applications?
Attila Kinali
[1] 40nVpp Noise, 0.05uV/°C Drift, Chopped FET Amplifier,
by Jim
p-p (0.1Hz to 10Hz).
Thanks!
Attila Kinali
--
I must not become metastable.
Metastability is the mind-killer.
Metastability is the little-death that brings total obliteration.
I will face my metastability.
I will permit it to pass over me and through me.
And when
his application),
Why would this be a mistake?
Attila Kinali
--
Reading can seriously damage your ignorance.
-- unknown
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with a delivery
service.
Alternatively, you can try to find a local electronics distributor that
has them.
Attila Kinali
--
Reading can seriously damage your ignorance.
-- unknown
___
volt-nuts mailing l
audiophool grade is really that pure). I have no idea how much the EMF
of the impurities is.
Attila Kinali
--
Malek's Law:
Any simple idea will be worded in the most complicated way.
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, none of these systems need a PhD to use. Even though
the theory behind them is quite complicated and involves some heavy
math and physics, their use is pretty straight forward (at least for
a quantum physical system).
Attila Kinali
[1] http://www.wmi.badw.de/teac
se and how to deal with that. What I am interested in are the
real world problems, how big they actually are and how to deal with them.
Attila Kinali
--
It is upon moral qualities that a society is ultimately founded. All
the prosperity and technological sophistication in
the electronics can support" :-)
But the signal will be slowly moving, so settling time will not be
that much of an issue, as long as the signal level can be kept stable.
Attila Kinali
--
It is upon moral qualities that a society is ultimately founded. All
the prosperity
t and a chain of opamps and low pass filters feeds
> >it to the consuming device. The absolute value and drift over more
> >than 10-100s is not that important.
>
> What range of voltages are we talking about ?
The DAC will probably output 0-3V or 0-5V, final output will be 0-5V
lter with 100Hz-1kHz bandwidth?
Attila Kinali
--
Malek's Law:
Any simple idea will be worded in the most complicated way.
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pacitors: be carefull and quick when handsoldering.
Attila Kinali
--
It is upon moral qualities that a society is ultimately founded. All
the prosperity and technological sophistication in the world is of no
use without that foundation.
-- Miss Matheson,
nt libraries. Schematics and layouts of circuits that are
more than a couple of years old are only worth as a reference for the
new design. New devices come so quickly that a design done 5 years ago
would look very different if done today. And often with better performance
and cheaper too.
a bit low, but then, the opamp is old.
Attila Kinali
--
It is upon moral qualities that a society is ultimately founded. All
the prosperity and technological sophistication in the world is of no
use without that foundation.
-- Miss Mathe
to be to increase amplification and slewrate.
I guess that can be said about the HP3458 as well, but that begs the
question why did they chose a 3 opamp structure? And why are U2 and U3
wired up the way they are?
Attila Kinali
--
It is upon moral qualities that
On Fri, 23 Feb 2018 18:31:47 +0100
Attila Kinali <att...@kinali.ch> wrote:
> And why are U2 and U3 wired up the way they are?
Let me expand here a little bit to make it clear what puzzles me.
The HP3458 circuit uses 3 opamps: LT1001, LM6361 and AD848.
The LT1001 is there for its low i
, this
is because I replaced the LM6361 and AD848 by the LT1225 but do not
understand why, or respectively, which of the differing parameters of
the LT1225 causes this oscillations.
Would someone be so kind and give me some hints?
Thanks in advance
Attila Kinali
rator
during reset.
But I don't understand why the integrator has been done that way.
U111 seems redundant when adding U112. It feels like I am missing a key
point in what changes in SR and GBW when connecting two opamps.
Attila Kinali
--
It is upon moral qualitie
guess that should imediatly be obvious once a complete stability
analyis is done.
Thanks everyone who provided insight and feedback.
Attila Kinali
--
It is upon moral qualities that a society is ultimately founded. All
the prosperity and technological sophistication
nput current is not exceeded. Linear has a few
opamps that can do the same trick (though in a slightly different
manner), but they also cost a bit more.
Attila Kinali
--
The bad part of Zurich is where the degenerates
throw DARK choc
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