Re: switchmode gyrator

On Sat, 16 Nov 2024 07:32:27 -0500, "Tom Del Rosso"
<fizzbintuesday@that-google-mail-domain.com> wrote:

john larkin wrote:

On Tue, 12 Nov 2024 19:44:39 +0100, Jeroen Belleman
>
My customer is building giant rackmount boxes full of heavy inductors
as part of his dummy loads. We want to replace them.
>
Given a generalized switching impedance simulator, I guess one could
model a DC motor.
>
I am considering a powered impedance simulator, not the theoretical
gyrator. Just sort of a gyrator.

>
Better to make it a floating inductor instead of a grounded one like
gyrators are.
>
Bob Pease shows how:
>
https://youtu.be/AEJtajaRj_s?t=284
>
Turn THAT into a switcher and patent it.

That's differential but not floating relative to the opamp power
supplies.

Every channel will of course need its own dc/dc converter, so it
really looks like an isolated resistor+inductor to the customer.

We do that a lot, floating circuits. The Coilcraft planar transformers
are great for powering isolated stuff.