[sdiy] Using non-linear passives

[Gordonjcp]

On Wed, Apr 05, 2017 at 05:20:27PM +0000, cheater00 cheater00 wrote:
> The effect is much more dramatic than you say, and it seems to be easily
> achievable. Here's a post by evilterrance at hotmail.com on the Electronics
> 101 mailing list:
> 
> > how about losing 80% of their capacitance by the time you are only
> halfway to their voltage rating?  Look at the graph in the upper right:
> >
> >
> https://product.tdk.com/info/en/documents/chara_sheet/C1608X5R1V225K080AC.pdf
> >
> > That +-10% tolerance?  Only counts to ONE volt.  To be fair, that is an
> X5R...but look up your favorite X7R cap and check that DC bias curve.
> Disappointing.

All very well in theory, but capacitors simply do not behave like that in real life.

If you don't believe me, try to rig up a test circuit that demonstrates this behaviour.

-- 
Gordonjcp MM0YEQ