Radio scan controller?

[Arthur Harrison]

Plinio wrote:

>"...Are switched capacitors
>devices that do the equivalent of laying down a series of capacitors of
>different values and just switching between them?"

A better analogy would be a resistor and capacitor (arranged like a one-pole
LPF, for instance), in which the resistor is replaced with a variable
duty-cycle switch.

-Art in theremin land