[sdiy] Newbie question: Diode ladders

[Tim Ressel]

Hi,

It's got something to do with the impedance of the
diode changing with the current through the diode. So
the diode acts as a current-controlled resistor.

I'm sure one of our staff scientists can explain it
better.

--TimR

--- Johannes Öberg <johannes.oberg at gmail.com> wrote:

> Hi. I don't understand how a diode ladder works as a
> voltage controlled 
> resistor (i.e. in a filter). Somebody enlighten me
> (with a LED?) please! 
> o]:-)
>  Are you using the linear area of a non-ideal diode
> or what?
>  /J
> 


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