Well, ok, not that booster!
Another "rush" special - to boost the current drive from a voltage signal. Our customer needed -10 to +10 volts to drive a 50 milliamp load. The voltage output from their control signal could supply only a fraction of that, so they needed an output-equals-input driver or current booster. They called us.
Additional needs: "ASAP - yesterday if possible" because they had just discovered the system problem.
Very high accuracy for their test application.