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Old 05-20-2022, 08:13 AM   #1
Crystaleyes
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Default Filter Cap AC Ripple Questions

Hi all.

Is there any other other cause of AC ripple other than a failing cap?

I say this as I have a new 18000F 15v cap which is showing about 1.5v of ripple when measured on a scope.

Is it ever the case that a failing bridge rectifier causes ripple?
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Old 05-20-2022, 01:16 PM   #2
Per Hansson
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Default Re: Filter Cap AC Ripple Questions

It is completely normal if there is no more active filtering.
I.e. if you just have a bridge rectifier and a cap you will have ripple.
The amount depends on the size of the cap and the connected load.
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Old 05-21-2022, 10:22 AM   #3
keeney123
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Default Re: Filter Cap AC Ripple Questions

Quote:
Originally Posted by Crystaleyes View Post
Hi all.

Is there any other other cause of AC ripple other than a failing cap?

I say this as I have a new 18000F 15v cap which is showing about 1.5v of ripple when measured on a scope.

Is it ever the case that a failing bridge rectifier causes ripple?
Maybe, it would be good if you show a drawing of the circuit or a picture of what you have connected.
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