WB O2 Success

[Bruce]

You're stating that as an absolute fact?.

You might be missing that the DIY is designed for the average guy to put
together, which puts it in an entirely different category.   It's not
designed as a lab grade or commerical use item.  It's just a DIY project.
To compare it to anything else is just abusing it's design features.
Bruce



From: "Kevin _" <kiggly at hotmail.com>
Subject: Re: WB O2 Success
> I don't know exactly how the DIY-WB board's circuitry is set up to heat
the
> sensor, but I do know you should be able to heat it a bunch quicker than
> that.  The production NTK driver box heats the sensor in about 5 seconds
and
> the Horriba driver box heats the sensor in less than 10 seconds.  I can't
> confirm that you can just drop down the resistance to accomplish this
> properly and safely though.
> Kevin

> >There should be some 15 ohm resistors left over from the parts
> >kit. Add some of these time across R4 (the big 1 ohm), until the
> >sensor warms up between 45 and 60 seconds. (That is in
> >parallel with R4).
> >BobR.

> > > Question:  It takes exactly four minutes for the sensor to heat up and
> >the
> > > LED to light.   Is four minutes heating time typical?  This is a bit
too
> > > long for my liking.  I assume that there is a need to control the rate
> >of
> > > heating the sensor or else we wouldn't have the elaborate heater power
> > > supply.   I would like to shorten the heating time if possible.  Any
> > > comments on what the effect of shortening the heating time would be?
> > > Thanks,
> > > Neil


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