More UEGO stuff

[Raymond C Drouillard]

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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