Larry
The TS922 will drive capacitive loads and there are other modern op amps
also. There is a LT product I cannot quite remember (let me get back to the
office on Monday) that is also very low power <100uA, so it is good for
battery use.
I don't think in a ham shack you need worry much about temperature drift
with these modern op amps either.
David
G3UNA
. However OP amps typically don't
> like to drive a capacitive load. If you make the cap small, you need to
> make the resistor large and long time constants will be limited by the
> leakage of the components and circuit board. Large caps will also limit
> the fast pulse capture due to finite output impedance of the op amp and
> diode as well as the slew rate of the OP amp. Details Details Details
>
> None of the circuits I've seen so far have any offset drift
> compensation. Is this not needed? Or, is it just ignored like so many
> other details.
>
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