whit3rd wrote on 1/25/2018 2:28 AM:
On Wednesday, January 24, 2018 at 9:05:17 PM UTC-8, rickman wrote:
Phil Allison wrote on 1/23/2018 10:29 PM:

Strangely, I have not come across a reverse linear pot anywhere.

If you give it a thought, you will realize a linear pot is its own reverse.
The reverse doesn't refer to whether the resistance goes up or down, it
refers to which direction the log curve goes...

Log taper means mimicing log(d) where the deflection (d) goes from
1 to 100 or somesuch. Inverse log taper means mimicing log(1/d) = - log(d)

So, linear taper can mimic 'd', and its inverse can be '-d', as you say.
Or, linear taper can be 'd', and its inverse can be '1/d'.

The '1/d' taper would be a way to make an adjustable attenuator, linear in inverse gain
going from '1' meaning full signal, to '2' meaning 1/2, ... '10' meaning 1/10

Then it is no longer linear.

--

Rick C

Viewed the eclipse at Wintercrest Farms,
on the centerline of totality since 1998