Capacitor distortion measurements by C. Bateman - diyAudio
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Old 27th October 2005, 06:11 PM   #1
mzzj is offline mzzj  Finland
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Default Capacitor distortion measurements by C. Bateman

Does someone have that series of articles from Electronics World 2003 where Baterman is measuring some caps? What kind of like oscillator/measurement setup he uses for measurements?


Local university didnt have EW and closests library subscribing EW is beyond polar circle. Had to wait untill summer so that library is digged out of snow again and even then one has to run so fast to get rid of polar bears.
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Old 28th October 2005, 09:34 AM   #2
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I know it's not what you're after but this link has some intresting CRO measurements of different capacitors.
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Old 28th October 2005, 09:47 AM   #3
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I think he is much more interested in the equipment than the outcomes.
CB did indeed build his own measuring equipment. This can be used for very accurate THD measurements of amps also. But it is fixed frequency only unfortunately.

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Charles
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Old 28th October 2005, 12:14 PM   #4
Vidalgo is offline Vidalgo  Israel
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Here is something related to capacitor distortions measurement:
http://www.ec.ss.titech.ac.jp/~hajim...istortion/cap/
But in japanese
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Old 28th October 2005, 04:31 PM   #5
mzzj is offline mzzj  Finland
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Quote:
Originally posted by phase_accurate
I think he is much more interested in the equipment than the outcomes.
CB did indeed build his own measuring equipment. This can be used for very accurate THD measurements of amps also. But it is fixed frequency only unfortunately.

Regards

Charles
Actually both circuitry and results as I am building low-distortion osc. Unless i manage to order photocopies I had to drive 500km to that library

----
Vidalgo, thanks for link, at least i can guess from text and pics.
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Old 28th October 2005, 05:04 PM   #6
mzzj is offline mzzj  Finland
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...at least i can guess from text and pics.

Goddammit, he has PCB-layouts but no schematics. And what worries me is the level of distortion what he measures from vima MKP. I tought that polypropylene is nearly as good as you can get. Maybe something to do with metallized vs. foil polyprop?
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Old 28th October 2005, 08:59 PM   #7
forr is offline forr  France
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Cyril Bateman has made a full cd-rom with all his articles and more
The better would be to contact him directly, however his email has changed and I have been unable to write to him since one year.
Making copy of the whole of his writings or of his Cd-rom would be author's rights infringement. I think it is worth to spend a little money for such a serious work. Does anyone know how to contact Cyril ?

~~~~~~~~~ Forr

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Old 29th October 2005, 02:41 AM   #8
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Quote:
Originally posted by Vidalgo
Here is something related to capacitor distortions measurement:
http://www.ec.ss.titech.ac.jp/~hajim...istortion/cap/
But in japanese
No big deal, traces and numbers speak a universal language: in this case click on the appropriate capacitor to see all you need to know. Just like ordering at a Chinese restaurant.


Cheers,
Francois.
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Old 31st October 2005, 04:36 AM   #9
mzzj is offline mzzj  Finland
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Join Date: Jul 2005
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Quote:
Originally posted by forr
Cyril Bateman has made a full cd-rom with all his articles and more
The better would be to contact him directly, however his email has changed and I have been unable to write to him since one year.
Making copy of the whole of his writings or of his Cd-rom would be author's rights infringement. I think it is worth to spend a little money for such a serious work. Does anyone know how to contact Cyril ?

~~~~~~~~~ Forr

Coudnt find anything related about ordering that cd, but luckily local polytech has EW subscription so I am going to head there for some reading. No need to go lapland then
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Old 31st October 2005, 06:21 AM   #10
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Quote:
Maybe something to do with metallized vs. foil polyprop?
AFAIR that was indeed one of his conclusions.

Regards

Charles
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