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Old 8th January 2008, 07:51 AM   #1
Dxvideo is offline Dxvideo  Turkey
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Unhappy Capacitor question... Again and again...

Hi all,

I am sure this question has been asked a million times.
So this will be the one million first;

In Pedja Rogic's JFET buffered gainclone circuit, which is;
Click the image to open in full size.

Should I use WIMA MKS2 or Black Gate Non Polar HQ type capacitors for 1uF and 4u7 positions?

Which gives the best audio performance?

Thanks in advance..
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Old 8th January 2008, 08:21 AM   #2
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I am using a polyprop for the 1 uF and an Obligato for the 4.7 uF.
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Old 8th January 2008, 09:12 AM   #3
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Default Re: Capacitor question... Again and again...

Quote:
Originally posted by Dxvideo
Should I use WIMA MKS2 or Black Gate Non Polar HQ type capacitors for 1uF and 4u7 positions?


I'd definitely go for the BG. MKS is polyester...
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Old 8th January 2008, 09:19 AM   #4
AndrewT is online now AndrewT  Scotland
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I would go for neither.
Go with metallised polypropylene or better.
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Old 8th January 2008, 10:20 AM   #5
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SOLEN- 55862 1.00uF 630v 0.0001 PPE 0.63 x 1.0 (16x25) $2.07
SOLEN- 55866 4.70uF 630v 0.0002 PPE 1.0 x 1.5 (25x38) $3.58

These are the "most acceptable" Metallised Polyprene ones in Partsconexion...

And;
BLKGATE- 60205 NX Hi-Q 22uF (!) 6.3v 5 x 7 $2.25

A blackgate alternative for signal line. Its a bit hi value but best I can find...

So do you think should I use Solen PPE s for both position or Black Gate for signal line and Wima MKS for IRF510??
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Old 8th January 2008, 11:05 AM   #6
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Polyprop or better for both!
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Old 8th January 2008, 12:41 PM   #7
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Oki doki....
Theyre really big boyz. It will be a bit hard to put them on the PCB...
Anyway, what about Solen brand capacitors? The others are very expensive!
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Old 8th January 2008, 12:49 PM   #8
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I haven't tried Solen myself. It depends where you can order from. Do you have access to Farnell?
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Old 8th January 2008, 12:52 PM   #9
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In fact I was planning to order all of this projects components from Farnell. However, as I searched in Farnell's web site there is no polyprene (at least in these values) caps at Farnell.
So I will purchase them from Partsconnexion or anywhere you will advice...
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Old 8th January 2008, 01:00 PM   #10
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Farnell order code 1215552 for 1.0 uF. 1413877 for the 4.7 uF.
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