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Old 4th June 2010, 07:32 PM   #1
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Question Capacitors

can I replace a polarized capacitor for a Bi-Polarized of the same value ?
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Old 4th June 2010, 07:44 PM   #2
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Yes, but this is not a good idea in general terms. Bipolar caps are often back-to-back polar electrolytics in the same can, of all the types commonly used in the audio signal path electrolytics are the most problematic in terms of sound quality, and 2 back-to-back is just multiplying the possibility of problems. You can do it for a temporary fix, but get the right part for the long term.

w
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Old 4th June 2010, 07:45 PM   #3
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thanks !
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Old 5th June 2010, 12:45 PM   #4
AndrewT is offline AndrewT  Scotland
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why was the bi-polar specified?

They are more expensive and more bulky. There must be a good reason for using the bi-polar.

Simply putting in a polar electrolytic where a bipolar is required is not a safe idea.
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Old 5th June 2010, 03:05 PM   #5
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I took the question to mean: can I use a bipolar where the original was a polar.

If the question is: can I use a polar where the original was a bipolar then the answer is no, as AndrewT points out.

Thanks, AndrewT, for clarifying this issue.

Sorry, I should have taken a bit more time over my reply.

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Old 5th June 2010, 06:23 PM   #6
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Yes, you can, but most bipolars have a higher esr than the equivalent polarised cap and tend to be bigger physically. If it's used in a power supply it might not last long.
I would really just put the proper one in and save yourself the hassle.
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