By the way, I meant to say that I admire your analytical approach of trying
to figure out WHY things don't work, rather than just being satisfied that
some change makes it work.

Sean

At 09:36 PM 4/13/02 -0700, you wrote:
>Hello,
>
>When I connect V+ and V- both to ground to effectively turn off the op. amp,
>the voltage between the resistors in the voltage divider is 1.3V (measured
>with an X10 probe and paid more attention this time).  I am indeed using a
>R-R op. amp that can handle inputs close to both the positive and negative
>rails.  The reference voltage is connected to the non-inverting input on the
>amplifier.

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