More UEGO stuff

[Bruce Plecan]

-----Original Message-----
From: Raymond C Drouillard <cosmic.ray at juno.com>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Saturday, January 30, 1999 11:39 PM
Subject: Re: More UEGO stuff

Gee, sounds so easy.  Hmm, care to whip up a ION?.
I certainly hope you weren't making light of Steve's work.
Bruce


>I would buy one.  Of course, if I happen to "stumble" across a design
>before the kit is available, I would simply build it myself.  The
>circuitry on a UEGO isn't all that complicated.  In its most basic form,
>it is a single op-amp and a few discretes.  Add a few more components for
>a double-ended power supply, something to shut off the ion pump when it's
>not warm, something to regulate the heater, and you have it.
>
>Ray Drouillard
>
>
>On Sat, 30 Jan 1999 14:25:13 -0600 Steve Gorkowski <kb4mxo at mwt.net>
>writes:
>>If one would come as a kit for under $200.00 with sensor. How many 
>>would
>>buy the kit ? No sense to design if one if no one was interested in a
>>wide O2 meter.
>>
>>Steve
>>
>>Mike Pitts wrote:
>>
>>> 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
>>
>>
>>
>>
>
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