Re: 1 million amp gone astray?

Discussion in 'Computer Information' started by Baron, Dec 1, 2010.

  1. Baron

    Baron Guest

    Robert Baer Inscribed thus:

    > This is what i just made and measured.
    > What the heck is going on?
    > Where did the current go?
    > Input section is OK; current from voltage source X shows as an
    > analog
    > voltage at point Y and computes correctly.
    > But the summing junction Z value implies a specific current from Y
    > to
    > Z that is not equal to that from Z to the -15V rail.
    > Have a capacitor from Z to ground to prevent oscillation.
    >
    > +------------------------------------------
    > | 100K |
    > | +---/\/\--+ |
    > | 150K | 2(\ | Y |
    > X--+--/\/\---+--( \ ---+---+ |
    > +--( / 1 | |
    > | 3(/ \ |
    > G 100K / 100K |
    > \ 6(\ |
    > | G--/\/---( \ -+
    > Z +-----------( / 7
    > | 5(/
    > OPA2277 \
    > / 150K
    > \ Meas: X = 3.0V
    > | Y = 2.0V (so far so
    > | good)
    > V Z = 0.0V (nonsequitor)
    > +15


    OC 100K between Y & Z ?

    --
    Best Regards:
    Baron.
     
    Baron, Dec 1, 2010
    #1
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