Could you please tell me what is the value of this capacitor? I am confused.

[csom]

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

 

[DF96]

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.

 

[csom]

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.

 

[Elvee]

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

 

[csom]

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

 

[Apex Jr]

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

 

[csom]

side view

Thank you so much Apex!
Here is the side view

 

[Apex Jr]

Not paper in oil.... Most likely Mylar or poly caps

 

[csom]

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 ?

 

[Damon Hill]

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.

 

[csom]

Thank you Damon!
I'll keep that in mind!

Best Regards,
Som

 

[DF96]

Now I can see how big they are, I agree with the others that they are 10uF. However, if you want to check you can use almost any DMM to monitor the voltage when you charge them through a 1M resistor from a voltage source. 10uF will rise fairly slowly. 10nF will rise quickly.

 

[gmphadte]

Sorry but forget the polycarbonates for anything.

Gajanan Phadte

 

[csom]

Now I can see how big they are, I agree with the others that they are 10uF. However, if you want to check you can use almost any DMM to monitor the voltage when you charge them through a 1M resistor from a voltage source. 10uF will rise fairly slowly. 10nF will rise quickly.

Thank you DF96, that's a good way to check it indeed.

Anyway I added them in my 3 band equalizer prototype and I now definitely feel noticeable quality enhancement there from earlier electrolytic caps.

I thought my perception might be biased so i double checked with a friend in a quick listening session and he also felt the boost in the details in my DIY floor standers output.

The midrange is more prominent or well defined now. Very very enriched vocals. And also there is a nice decay! The stereo image has surely improved imho.

Thank you all once again
Here is the photo of the eq prototype

Best Regards,
Som.

 

[csom]

Sorry but forget the polycarbonates for anything.

Gajanan Phadte

Thank you for your response Gajanan