UEGO interface design expert offers help!

[Frank F Parker]

> I've understood the discussion so far,  I think the biggest obstacle
> in the interface design is how to measure the impedance of the sensor
> to control it's heating while not disturbing signal output - what
> else?
I believe you need to find out if the type he is familar with is a
UEGO or the voltaic Bosch LSM-11 sensor. Measuring the impedance to infer
the temp is the critical step in the Bosch, NOT the UEGO sensor. Let us
know and we will try and help.
Good work.

frank