[sdiy] Re: cap autopsy

[Paul Perry]

At 10:48 PM 30/01/01 +0100, Dave Krooshof  wrote:

>2700
>10%
>250-
>
>It's grey, some 3x12x8 cm. Letters are black.
>Normally you would expect its value to be in picofarads,
>But I think this is a 2.7 microfarad cap.

Dave, is there any brand name on the cap, or any logo?
If you relly mean millimeters, it sounds like a 
ceramic, 2700 pico with -250 parts per million temperature drift.

>Does anyone have a clue what this might be?
>Value here is the secundairy problem. As this oscillator is loved for it's
>instability (as in not stable) I'm primairily interested in what this
>cap is phisically/chemically/brandwise!

I am afraid that if the instability is due to the cap, then the cap is
faulty (no matter waht kind or value it is) and another cap of the same 
value and type will not produce the effect you seek.
>