RE: [jallist] liquid sensor

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> On Fri, 31 Oct 2003, bviel wrote:
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> > Try 3x 1N4148(parallel), in serie with a jfet current source, followed
by an
> > opamp, one drop
> > of liquid on one of the diodes should slam the needle of the meter
connected
> > to the opamp.
> > This is a very sensitive temp. sensor.
> > It's an Elektuur scheme, just an idea...
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>   hmm, funny Elektuur solution. Think just a little, how can be three
> 1N4148 in parallel be more sensitive than one ? If you can demonstrate
> this to me I'll be glad all this day :)
> Think just at Vdiode dispersion on the same lot of diodes...
> I'll be agree with 4 diodes connected in one bridge, but 3 diodes in
> parallel ?... :(

I am searching the original scheme, and comment.
Please be patient, could take a while...
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> best,
> Vasile
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