Dual Section Capacitor

woodrough · 28th September 2012, 11:46 AM

Hi, I need someone to verify if my thought process is correct.

This image is the regular set up for decoupling for supplying power.
IMAGE01

This is what I believe I could do to simplify and reduce cost. By using the 100+100uF JJ cap, it will cost less and take up a little less real-estate.
IMAGE02

So my questions are:
(1) is this how you properly use a dual section cap. (with and without the film caps on the side)
(2) does this create potential ground loop danger? (not as star ground as it could be)
(3) new gained length from caps to anode. Possible bad thing?

Thanks in advance if anyone can give me pointers.

AndrewT · 29th September 2012, 01:10 PM

I can't see your pics.
Are you suing a remote server.
What's wrong with attaching pics?

woodrough · 29th September 2012, 01:25 PM

Hi Andrew,
Ya, I am using a remote server to host my images. They were kind of big so I kept them as links instead. If you can't click on them I'll try a different method

woodrough · 29th September 2012, 02:09 PM

I hate to do this, but it may be a little big. Let me know if this method does not work:

woodrough · 29th September 2012, 11:59 PM

100uF+100uF @ 500V JJ Can Electrolytic Capacitors:QTY=3 | eBay

If this helps, this is the capacitor in question?

AndrewT · 30th September 2012, 08:33 AM

no pics

woodrough · 30th September 2012, 04:32 PM

anyone?

Bueller? Bueller?

DF96 · 30th September 2012, 05:00 PM

Difficult to decipher a skeleton board layout. A circuit diagram would be better. A dual cap means sharing the negative connection. Whether this is a problem depends entirely on context.

N-Brock · 30th September 2012, 05:03 PM

woodrough,

I can see your pics, but in the future you should upload them to the forum (as I've just done) to avoid problems.

-Nelson

woodrough · 30th September 2012, 08:02 PM

Thanks N-Brock for the recommendation. Didnt know that uploading to the forum is a safer avenue.

I guess my question doesn't necessarily need a diagram to discuss really.

My question really is 'why would one use a dual capacitor'. From my point of view its to cut down on components and or cost. But I was wondering what it means sonically. (Star ground etc)

28th September 2012, 11:46 AM	#1
woodrough diyAudio Member Join Date: Aug 2012	Dual Section Capacitor Hi, I need someone to verify if my thought process is correct. This image is the regular set up for decoupling for supplying power. IMAGE01 This is what I believe I could do to simplify and reduce cost. By using the 100+100uF JJ cap, it will cost less and take up a little less real-estate. IMAGE02 So my questions are: (1) is this how you properly use a dual section cap. (with and without the film caps on the side) (2) does this create potential ground loop danger? (not as star ground as it could be) (3) new gained length from caps to anode. Possible bad thing? Thanks in advance if anyone can give me pointers.

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29th September 2012, 01:10 PM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	I can't see your pics. Are you suing a remote server. What's wrong with attaching pics?

29th September 2012, 01:25 PM	#3
woodrough diyAudio Member Join Date: Aug 2012	Hi Andrew, Ya, I am using a remote server to host my images. They were kind of big so I kept them as links instead. If you can't click on them I'll try a different method

29th September 2012, 02:09 PM	#4
woodrough diyAudio Member Join Date: Aug 2012	I hate to do this, but it may be a little big. Let me know if this method does not work:

29th September 2012, 11:59 PM	#5
woodrough diyAudio Member Join Date: Aug 2012	100uF+100uF @ 500V JJ Can Electrolytic Capacitors:QTY=3 \| eBay If this helps, this is the capacitor in question?

30th September 2012, 08:33 AM	#6
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	no pics

30th September 2012, 04:32 PM	#7
woodrough diyAudio Member Join Date: Aug 2012	anyone? Bueller? Bueller?

30th September 2012, 05:00 PM	#8
DF96 diyAudio Member Join Date: May 2007	Difficult to decipher a skeleton board layout. A circuit diagram would be better. A dual cap means sharing the negative connection. Whether this is a problem depends entirely on context.

30th September 2012, 08:02 PM	#10
woodrough diyAudio Member Join Date: Aug 2012	Thanks N-Brock for the recommendation. Didnt know that uploading to the forum is a safer avenue. I guess my question doesn't necessarily need a diagram to discuss really. My question really is 'why would one use a dual capacitor'. From my point of view its to cut down on components and or cost. But I was wondering what it means sonically. (Star ground etc)