Abstract: An object of the present disclosure is to suppress mixing of gases generated during an operation when supply of electric power is stopped, to thereby shorten the time required for restarting after the electric power is stopped. An electrolysis system of the present disclosure includes an electrolyzer including an electrolytic cell in which an anode and a cathode are overlapped with each other having a diaphragm interposed therebetween, and a liquid surface level control unit which is operated when an electric conduction to the electrolyzer is stopped to adjust a liquid surface level of an electrolytic solution in the electrolytic cell.

Abstract: An elevator device for a television camera which reduces noise to a low level, which moves up or down a television camera at high speed regardless of whether the moving distance is short or long, and which makes it possible that camera position movement at high speed is compatible with smooth speed change in low speed range in film shooting. The elevator device for a television camera comprises a stationary cylinder 1, a movable cylinder 3 on which a television camera 2 is mounted, and a linear motor 4 for moving the movable cylinder 3 up or down along the stationary cylinder 1, wherein the movable cylinder 3 is in the form of a telescopic tube and includes a pulley 32 and a wire rope 33 for extension and contraction of the movable cylinder 3 when the movable part 24 of linear motor 4 is moved up or down.

Abstract: An elevator device for a television camera which reduces noise to a low level, which moves up or down a television camera at high speed regardless of whether the moving distance is short or long, and which makes it possible that camera position movement at high speed is compatible with smooth speed change in low speed range in film shooting.