You have me curious -
How is the 747 different from any other noisy, drifty, hi-input current,
op-amp from the early 1970's  ??

Feedback is feedback isn't it?

The modern op-amp designs  seem so much better.
"I'd walk a mile for a camel - no no that should be chopper stabilization."

(And I have used my share of 747's when they were about
the only game in town "for the rest of us".)

Cheers
   Ed Thelen

----- Original Message -----
> From: "Larry Cochrane" 
>
> I like the 741 op-amp circuit. It has three different ways of controlling
the gain!
>
> -Larry Cochrane
> Redwood City, PSN



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