diy uego

[BT]

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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