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Old 28th September 2012, 12:46 PM   #1
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Default 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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Old 29th September 2012, 02:10 PM   #2
AndrewT is online now AndrewT  Scotland
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I can't see your pics.
Are you suing a remote server.
What's wrong with attaching pics?
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Old 29th September 2012, 02:25 PM   #3
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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
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Old 29th September 2012, 03:09 PM   #4
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I hate to do this, but it may be a little big. Let me know if this method does not work:

Click the image to open in full size.
Click the image to open in full size.
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Old 30th September 2012, 12:59 AM   #5
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100uF+100uF @ 500V JJ Can Electrolytic Capacitors:QTY=3 | eBay

If this helps, this is the capacitor in question?
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Old 30th September 2012, 09:33 AM   #6
AndrewT is online now AndrewT  Scotland
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no pics
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Old 30th September 2012, 05:32 PM   #7
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anyone?

Click the image to open in full size.

Click the image to open in full size.


Bueller? Bueller?
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Old 30th September 2012, 06:00 PM   #8
DF96 is offline DF96  England
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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.
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Old 30th September 2012, 06:03 PM   #9
N Brock is offline N Brock  United States
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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
Attached Images
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File Type: png ZMaRB.png (106.3 KB, 5 views)
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Old 30th September 2012, 09:02 PM   #10
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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)
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