Could you please tell me what is the value of this capacitor? I am confused. - diyAudio
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Old 11th December 2012, 06:26 PM   #1
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Question Could you please tell me what is the value of this capacitor? I am confused.

Hi all,
I purchased these caps (kindly see the attachment) from a local shop as 10uF . I want to use them in the signal input section of an amp.

My questions are
1. What is the exact value of these?
2. Can I use them in the signal path?
3. What type they are of?


Thank you
Warm regards
Som
Attached Images
File Type: jpg cqp value.jpg (463.1 KB, 127 views)

Last edited by csom; 11th December 2012 at 06:33 PM.
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Old 11th December 2012, 06:32 PM   #2
DF96 is offline DF96  England
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Could be 10uF. Could be 10nF. They appear to be film caps, so unless they are huge I would guess 10nF at 100V. Might work as input cap to a valve amp with a reasonably high grid resistor.
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Old 11th December 2012, 06:36 PM   #3
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Quote:
Originally Posted by DF96 View Post
Could be 10uF. Could be 10nF. They appear to be film caps, so unless they are huge I would guess 10nF at 100V. Might work as input cap to a valve amp with a reasonably high grid resistor.
Thank you DF96, for your kind and prompt reply.
But i want to make sure as I need two 10uFd in my graphic equalizer output
Here is another photo for the comparison of the size.
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File Type: jpg cap comparison.jpg (523.5 KB, 109 views)

Last edited by csom; 11th December 2012 at 06:55 PM.
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Old 11th December 2012, 07:14 PM   #4
Elvee is online now Elvee  Belgium
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10µF/10%/100V.

The type could be almost any plastic: mylar, polycarbonate, polypropylene (except polystyrene).

Construction could be metalized or foil.

Anyway, they should be perfectly suitable for signal path applications
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Old 11th December 2012, 07:21 PM   #5
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Quote:
Originally Posted by Elvee View Post
10µF/10%/100V.

The type could be almost any plastic: mylar, polycarbonate, polypropylene (except polystyrene).

Construction could be metalized or foil.

Anyway, they should be perfectly suitable for signal path applications
Thank you so much Elvee! Much apreciated!
regards
Som
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Old 11th December 2012, 07:23 PM   #6
Apex Jr is offline Apex Jr  United States
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Quote:
Originally Posted by Elvee View Post
10µF/10%/100V.

The type could be almost any plastic: mylar, polycarbonate, polypropylene (except polystyrene).

Construction could be metalized or foil.

Anyway, they should be perfectly suitable for signal path applications
For sure 10Uf 10% 100V
Need to see the side where the leads come out, might be PIO Paper in Oil
type caps
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Old 11th December 2012, 07:31 PM   #7
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Default side view

Thank you so much Apex!
Here is the side view
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Old 11th December 2012, 07:34 PM   #8
Apex Jr is offline Apex Jr  United States
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Not paper in oil.... Most likely Mylar or poly caps
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Old 11th December 2012, 07:42 PM   #9
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Quote:
Originally Posted by Apex Jr View Post
Not paper in oil.... Most likely Mylar or poly caps
okay! thank you again Apex


What is the best cap type for signal path , I mean what type should I tell vendor when i purchase , could you please guide me ?
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Old 11th December 2012, 08:19 PM   #10
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Polypropylene would be the better choice, and reasonably easy to obtain; polycarbonate 2nd choice, and Mylar last--but still better than an electrolytic. Polystyrene and teflon would be much superior, but you won't find them at any reasonable cost or size.

Mylar and polycarbonate films seem to be more compact than other film types. Then there are two types of construction: metalized film and film and foil. The second is higher quality, rather more expensive and larger. I would settle for metalized film.
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