tantalum caps wasRe: emc success

--- In CAD_CAM_EDM_DRO@egroups.com, "Wally K" <cnc4me@u...> wrote:

> --- In CAD_CAM_EDM_DRO@egroups.com, "Mariss Freimanis"
> <geckohall@h...> wrote:
>
> > Not at all. Tantalum caps feature very low leakage currents and
> tight
> > tolerance, making them the prefered choice for timing circuits.
>
>
> Wally K. replys;
>
> I could not disagree more with using tantalum caps for timming
> circuits. A friend of mine who is the best analog engineer i know,
> has been designing industrial electronics for 35 years. When other
> engineers fail on a project my friend is the one they call in.

When

> talking about tantalums one day he told me never to use them for
> timming circuits as they will drift over time.

Sometimes there's no choice. For long time intervals (big R and big C)
there is no better alternative.

Mariss