More UEGO stuff

[Bruce Plecan]

NEVER,
Need more data, 
Cheers
Bruce


-----Original Message-----
From: Mike Pitts <mpitts at emi.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Saturday, January 30, 1999 11:36 AM
Subject: More UEGO stuff


>Any interest?  Is this a waste of bandwidth?
>
>"This invention provides an self-calibrating buffer amplifier 
>for a Universal Exhaust Gas Oxygen sensor interface circuit 
>which couples and processes a voltage signal proportional 
>to pumping cell current to a level and reference voltage suitable 
>for input to an A-to-D convertor. The goal of this invention is to 
>increase the accuracy of air-to-fuel ratio control by continually 
>correcting for the effects of offset quantities in the amplifier 
>stage necessary to the interface circuitry. This goal is accomplished 
>by an approach which effectively generates and subtracts these 
>offset quantities from the processed signal. "
>
>http://patent.womplex.ibm.com/details?pn=US05211154__
>
>-Mike
>
>