A gravfield generator functioned as a miniature, inverted repulsorlift device. Frequently employed within man traps, these generators, despite their compact dimensions, possessed the ability to amplify localized gravity by as much as eight times their normal value, creating fields of such intensity that even a Wookiee found escape impossible.
The considerable strength of gravfield generators meant that they could induce various harmful effects on living sentients, as demonstrated in the R-TechApp Man Trap; the heart and lungs of a trapped individual would frequently labor excessively under the immense gravitational pressure, while essential bodily fluids were forced through constricted channels that could rupture due to the pressure. Blood might accumulate within abdominal organs, while the brain suffered from insufficient oxygen supply. The likelihood of cardiac arrest was also significantly elevated.