Motorrun caps ... GND side?

Gluca · 30th December 2005, 11:09 AM

Folks,

I just received a box full of oil filled caps ASC 100uF/370VAC. I need them for my next amp's PSU.

But UH-OH? What's the preferred lug (if any) to be connected to ground (outer foil)?

Ciao
Gianluca

dave dove · 30th December 2005, 11:16 AM

they are non polar
use either way

dave dove

dhaen · 30th December 2005, 03:40 PM

It matters

Here is a post dealing with the subject:
sexing caps

I sacrificed one of my Russian caps to determine outer foil. At least I'm sure now.

Giaime · 30th December 2005, 04:41 PM

So Frank, do I have to connect the outer foil to "ground" or to the lower dc potential side or it is the opposite?

Gluca · 30th December 2005, 07:09 PM

Outer foil to GND.

Thanks John. Quite an easy way to find the cap's sex. I did miss that thread ...

Ciao
Gianluca

andyjevans · 1st January 2006, 12:24 AM

I sacrificed one of my Russian caps to determine outer foil. At least I'm sure now.>

Hello John - I have a stack of those russian Teflon caps - do please tell me which is the outer foil? the problem is that the sign on the cap is at 90 degrees so it's not clear. I'm sure you know what I'm talking about. Andy

fdegrove · 1st January 2006, 12:50 AM

Hi,

Quote:

Outer foil to GND.

In the case of PSU filter caps consider the foil side as the - sign.

In case of a coupling cap consider the foil as analogous to the shield of a coax cable where you'd daisy chain the foils from one stage to the next.

Cheers,

30th December 2005, 11:09 AM	#1
Gluca tarmac ripper diyAudio Member Join Date: Nov 2004 Location: Back to Italy	Motorrun caps ... GND side? Folks, I just received a box full of oil filled caps ASC 100uF/370VAC. I need them for my next amp's PSU. But UH-OH? What's the preferred lug (if any) to be connected to ground (outer foil)? Ciao Gianluca

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30th December 2005, 11:16 AM	#2
dave dove diyAudio Member Join Date: Mar 2005 Location: mid wales	they are non polar use either way dave dove

30th December 2005, 03:40 PM	#3
dhaen diyAudio Moderator Emeritus Join Date: Jun 2002 Location: U.K.	It matters Here is a post dealing with the subject: sexing caps I sacrificed one of my Russian caps to determine outer foil. At least I'm sure now.

30th December 2005, 04:41 PM	#4
Giaime diyAudio Member Join Date: Oct 2004	So Frank, do I have to connect the outer foil to "ground" or to the lower dc potential side or it is the opposite?

30th December 2005, 07:09 PM	#5
Gluca tarmac ripper diyAudio Member Join Date: Nov 2004 Location: Back to Italy	Outer foil to GND. Thanks John. Quite an easy way to find the cap's sex. I did miss that thread ... Ciao Gianluca

1st January 2006, 12:24 AM	#6
andyjevans diyAudio Member Join Date: Sep 2003 Location: London	I sacrificed one of my Russian caps to determine outer foil. At least I'm sure now.> Hello John - I have a stack of those russian Teflon caps - do please tell me which is the outer foil? the problem is that the sign on the cap is at 90 degrees so it's not clear. I'm sure you know what I'm talking about. Andy

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