Sun Jun 8 14:21:04 EDT 2014

Diode ladders vs. single leg

I've been trying to figure out why one would use a ladder instead of a
single leg.  Here's a difference:

In a ladder, when the control current changes and the diodes are
matched, there is no resulting transient current through the

In a single leg filter, the caps need to charge/discharge when the DC
operating point changes.

Now, is this significant?  If a step is applied to the control
current, the voltage will step as well, but with less amplitude
(logarithmic) and filtered through the capacitors.  Guessing it will
still sound like a filtered discontinuity, i.e. ring at high

EDIT: This is a very clear pop.  Annoying to the point of being
useless.  How to remedy?