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Delinquent electro

Discussion in 'Hobby Electronics' started by Phil Allison, Dec 15, 2010.

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  1. Phil Allison

    Phil Allison Guest

    **Hi to all,

    just pulled a 470uF, 35V pigtail electro form an old piece of German made
    audio gear ( Dynacord ).

    Behaved initially like it was very leaky, pulling a 16 volt DC rail down to
    just 2.6 volts.

    Tested on a bench supply, with variable current limiting, it behaved exactly
    like a 2.7 volt zener.

    Tested on my trusty Bob parker ESR meter - it read open ( ie more than 100
    ohms).

    Blasted with 2 amps of DC current - it instantly ceased being a zener and
    the ESR dropped to around 20 milliohms.

    Repeating the above treatments induces event more schizoid behaviours.

    This Kraut made cap is plain bonkers .....



    ..... Phil
     
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