[ARC5] Mica Capacitor

[Scott Robinson]

HI J,

Well, not quite; a corroded internal connection can case a series 
resistive loss without making the cap leaky. It might have little or no 
leakage current but still mess up a resonant circuit it was part of.

Regards,

Scott

On 9/18/16 8:35 AM, J Mcvey wrote:
> lossy and leaky are about the same thing - high ESR .
> I just pulled a few micas (250pf) out of a WWII radio where the leakage
> resistance was so bad
> that it could be measured with a DMM. I think it was around 1.5 meg,
> which totally messed with
> the circuit bias.
>
>
>
> On Sunday, September 18, 2016 10:56 AM, Scott Robinson
> <spr at earthlink.net> wrote:
>
>
> Folks,
>
> In  my  experience, micas don't get leaky,,,BUT they occasionally go
> open or get lossy (low Q). I 've had to change out 5 or 10 of them in my
> R390A.
>
> Regads,
>
> Scott Robinson
>
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