diy uego

[Phil Martin]

I have built a circuit but not tested yet. I had noticed the anomaly in the
circuit but thought it must be peforming some special function. Thanks.
Better get it changed now.

I have a few sensors to hand so i will have a play at the weekend

Phillip Martin

----- Original Message -----
From: "BT" <btisdale at cybersol.com>
To: <diy_efi at diy-efi.org>
Sent: Wednesday, January 17, 2001 6:05 PM
Subject: Re: diy uego


> Thanks very much for your comments, Bob - I'm about 1/2 way through
> construction of the thing, your findings are valuable.
>
> Anybody else building one???
>
> Bruce/Chad - you referred to 'free air calibration' - what/how is this
> done?  Thanks.
>
> Barry
>
> At 10:17 AM 01/17/2001 -0600, Robert R Ducker wrote:
> >     Bruce, I hope things are going well for you.
> >     Here's some more UEGO stuff. Something I forgot to mention last
time,
> >there's an error in the controller schematic that doesn't seem to have
been
> >posted before. Q1 is shown reversed emitter-collector and should be NPN
> >rather than PNP. So it should be a 2N3904, used as a follower with the
> >collector tied to +V. This turns the ion kill stuff into a mess
otherwise.
> >If this has already been posted about, my apoligies, I couldn't find it.
> >I also talked about pots R1 and R2 last time, should have called them R19
> >and R20.
> >
> >Bob D
>
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