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Electrolytic capacitor + and - plates response to small signals
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ifrenide:
hello everyone, I want to know, how an electrolytic capacitor have the same response, for the same small square wave signal,no matter the polarization.
this is ovserved while ESR measerement of an electrolytic capacitor. how can give the same reading,for both sides.As I know, the positive and negative plates are different ,so how can they give the same response?
thanx.
best regards
Zero999:
By keeping the voltage very low. An electrolytic capacitor can be reverse biased by a volt or so without any damage and will still act like a capacitor.

Why scale the image up to an insane size, which just wastes bandwidth? Please refrain from posting such large files, unless it's absolutely necessary.
ifrenide:
Hello zero999
1- How can we get the same reading, with different plate configuration" on atomic scale"?
2- Why only small voltage can be applied on the reverse polarity sens ?
T3sl4co1l:
What's on atomic scale?

Typical electrolytics can withstand several volts reverse before nonlinearities occur.  An ESR tester (is that what this is?) may only apply a few millivolts, a negligible amount in comparison.

Tim
ifrenide:
Hi Tim.
1-"On atomic scale ",I mean the anode and cathode atomic construction, do you think it's the same?
2-What make aluminum foil stripe anode. And what make the other stripe a cathode.
3-why small voltage can be applied in reverse sens " what happen to the atoms in both scenarios a small voltage ,and a high voltage? ".
4- what determine the maximum voltage applied in reverse polarity sens of the electrolytic capacitor?
Best regards

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