Thread: ESR meter trap
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Phil Allison[_3_] Phil Allison[_3_] is offline
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Default ESR meter trap

Chuck wrote:


Grass Valley fiber cards had +15 -15 V power supplies where the 220uf
axial caps checked good for ESR with the Bob Parker meter in circuit
but were faulty.

** How uninformative.

Bob's meter tests ESR, far and away the most common, age related failure mode of electro caps.

It does not test for high leakage, being wrongly marked in the factory or installed backwards.

..... Phil