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Capacitor tests,electrolytics vs film caps.Scroll to the bottom and read up.

97.95.43.235
Posted on July 23, 2016 at 13:52:45
Michael Samra
Dealer

Posts: 36118
Location: saginaw michigan
Joined: January 30, 2005


ESR is 1.1 ohms


Leakage current is minus 1.4 microamps which is below 0


Dielectric absorption is 0% which is tops.


This is a 51uf Solen poly and it reads exactly 51.3uf


Leakage current is 5.2 microamps,not milliamps which very low


dielectric absorption is 0% which is expected.


The ESR is 1.16 ohms


This is a 70uf Panasonic film cap and it reads exactly 70uf


Leakage is about 3ma which is very good for this 820uf lytic large value cap


ESR is 1.14 ohms which is really good as well


Dielectric absorption is at 8% which is dam good for a lytic.


This first cap is the Panasonic 820uf CE.It reads 716uf which is actually well within tolerance of 20% which this reading around 12% or so.


The tests I am going to show you are tested on my Sencore LC-102 and it shows the most critical aspects from ESR,dielectric absorption,leakage by current and internal resistance.I picked my favorite to two of my many favorite film caps.

"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken

 

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Conclusions/insights?..., posted on July 23, 2016 at 14:53:37
Steve O
Audiophile

Posts: 12375
Location: SE MI
Joined: September 6, 2001
 ...also, a neg leakage current is suspicious and warrants further investigation. I'd guess a case of DA but with meter leads are reversed.

 

70uF Film Cap, posted on July 23, 2016 at 15:18:15
Triode_Kingdom
Audiophile

Posts: 10047
Location: Central Texas
Joined: September 24, 2006
 Out of curiosity, did you compare the 70uF film cap against Panasonic's specs? I know it's a large cap, but 3mA seems high for film. The only way to know for sure would be to look it up.

 

LOOK AGAIN!, posted on July 23, 2016 at 15:54:58
Michael Samra
Dealer

Posts: 36118
Location: saginaw michigan
Joined: January 30, 2005
 I said the 70uf panasonic is 5.2ua not 3ma. The 3ma was for the 820uf panasonic electrolytic. The reading for the 820uf lytic now reads in the 351ua range and I had to push the button and hold it for a while..It drops more the longer you hold it.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken

 

RE: Conclusions/insights?..., posted on July 23, 2016 at 15:56:05
Michael Samra
Dealer

Posts: 36118
Location: saginaw michigan
Joined: January 30, 2005
 The solen is the best one spec wise but it's also the largest physically and the most expensive.
"For every complex problem there is an answer that is clear, simple, and wrong" H. L. Mencken

 

RE: LOOK AGAIN!, posted on July 23, 2016 at 20:13:11
Triode_Kingdom
Audiophile

Posts: 10047
Location: Central Texas
Joined: September 24, 2006
 No, you didn't say that, it was very confusing. Much clearer now that you've edited the post. The numbers make more sense now.

 

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