Voltage Divider Question

[exelanoz]

Hello Hello

I have visited www.darreltaylor.com to use his voltage divider calculator.

I notice that on his circuit diagram in addition to R1 and R2 he has C1 and D1.

I guess that C1 is some kind of non-polarised cap... and that D1 is some kind of zener diode...

Am I halfway there?

So.....I have used voltage dividers before, but never came across C1 and D1. Can someone ( or Darrel :-)))) please explain to me the function of those additional components and a suggested value to use?

Many thanks

(link http://www.pbpgroup.com/modules/wfse...p?articleid=25 )