Me and my Tan Theta Meter (Capacitor tester) - Page 2 - diyAudio
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Old 16th October 2008, 10:01 AM   #11
Mooly is offline Mooly  United Kingdom
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It was in Electronics World January 2000 for the final design. I think there was a kit at the time.
I cheated with mine, made it using what I had available, and didn't use the recommended 7106 DVM IC for a display device. Made mine as an add on to a multimeter, which involved designing a log/antilog circuit, but it's fine. I built it for a bit of fun really.
If you would like a copy of the original circuit email me.
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Old 16th October 2008, 10:38 AM   #12
PHEONIX is offline PHEONIX  Australia
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Quote:
Originally posted by Mooly
It was in Electronics World January 2000 for the final design. I think there was a kit at the time.
I cheated with mine, made it using what I had available, and didn't use the recommended 7106 DVM IC for a display device. Made mine as an add on to a multimeter, which involved designing a log/antilog circuit, but it's fine. I built it for a bit of fun really.
If you would like a copy of the original circuit email me.

Hello Mooly

So after your measurents what is the best sounding cap?.

Could you define the term Xc

Regards
Arthur
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Old 16th October 2008, 10:41 AM   #13
forr is offline forr  France
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Quote:
Originally posted by unclejed613
did you say it was a kit or a public domain design? either way i'd like to build one...
Hi Unclejed613,

Not public domain but available
http://uk.geocities.com/cyrilb2@btin...wnloads_4.html
http://uk.geocities.com/cyrilb2@btin.../contents5.pdf
Purchasing the CD is not expensive and a very worthy buy.
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Old 16th October 2008, 10:44 AM   #14
Mooly is offline Mooly  United Kingdom
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Xc = Capacitive reactance You know 1 / 2PI fc
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Old 16th October 2008, 10:50 AM   #15
Mooly is offline Mooly  United Kingdom
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Best sounding cap. Is there one ? I try to keep electroylitics out of the audio path but sometimes it is unavoidable. I use good quality types like Panasonic, Nichicons, etc always 105 degree rating. I am not a great believer in the "sound" of different parts provided they are of good quality to begin with. Circuit topology has far far more effect. It's like running components in. I just cringe when someone says their OpAmp "settled down" after a few hundred hours. Dont get me started
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Old 16th October 2008, 11:03 AM   #16
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This is much better. Measures everything accurately.
Original signed Hubbard Electrometer. Me very proud.
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Old 16th October 2008, 11:19 AM   #17
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It`s nice too, isn`t it? Real hardwood.
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Old 16th October 2008, 04:50 PM   #18
Mooly is offline Mooly  United Kingdom
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Very nice The case reminds me of something my Grandad used to have,
http://www.thebakken.org/artifacts/d...ory=D3&id=1781
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Old 16th October 2008, 08:47 PM   #19
PHEONIX is offline PHEONIX  Australia
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Quote:
Originally posted by Mooly
Best sounding cap. Is there one ? I try to keep electroylitics out of the audio path but sometimes it is unavoidable. I use good quality types like Panasonic, Nichicons, etc always 105 degree rating. I am not a great believer in the "sound" of different parts provided they are of good quality to begin with. Circuit topology has far far more effect. It's like running components in. I just cringe when someone says their OpAmp "settled down" after a few hundred hours. Dont get me started

Hello Mooly,

If you do not believe in the sound of parts why measure anything with the Tan Theta metre, all the information you are after is available from data sheets , and it looks like everthing you like is from reputable Japanese suppliers, how has the Tan Theta metre helped you improve sound quality.

Regards
Arthur
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Old 17th October 2008, 02:53 AM   #20
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Mooly,
Quote:
The case reminds me of something my Grandad used
Yes, yet stylish. By the way, it`s for sale now, in my view, a thousand bucks would not be an exceedingly high price to ask for this rare piece of art, what do you think?
------------------------------------------------
Frankly, you are really disappointing me this time. Don`t fool yourself, you can`t measure the sonic properties of capacitors (or of anything, for that matter). Furthermore, its not very wise to base your choice upon ESR nowadays. Most types having low ESR are generally of poor quality, meant for the huge market of industrial applications, where the features important in audio are almost a nuisance. Making good sounding electrolytic capacitors is not an easy task, has to be done purposively. Electrolytic is a very coarse dielectric material.
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