It's the plain truth.  It's a (tiny) primary cell that operates at >600F
and generates approaching a volt when there's oxygen on one side of its
membrane and not on the other side.  It's of no practical use to power
anything, but it makes a lovely detector.

Yrs,
d

On Fri, Apr 17, 2020 at 9:01 AM ddbjorkman@verizon.net <
ddbjorkman@verizon.net> wrote:

> David, I really like that oxygen battery description of what the O2 sensor
> system does.  I have a "working knowledge" of the sensor, but between
> Dennis's description and yours, I have a much more graphic idea of how that
> works.
>
> Dave B.
>
>
> -----Original Message-----
> From: David Beierl <dbeierl@GMAIL.COM>
> To: vanagon@GERRY.VANAGON.COM
> Sent: Thu, Apr 16, 2020 6:38 pm
> Subject: Re: AFM failure
>
> >
> > The sensor is a bit of magic and should probably be called an oxygen
> > deficiency sensor! This thought is based on the voltage being produced by
> > the difference in the O2 level in the exhaust and atmosphere.
>
>
> It's literally an oxygen battery.
>
> Yrs,
>
> d
>
> >
> >
>