NOVELTY - Hydrogen gas generator comprises operation fluid supply unit, body (10), dielectric implant (20), separator (50) and collector (60). The supply unit supplies operation fluid after highly purifying and pressurizing the fluid. The body has A passage where the operation fluid flows. The dielectric implant passes the operation fluid through the passage slot (21).    USE - Generating hydrogen gas from water, useful in e.g. distributed fuel, hydrogen-fueled cars and airplanes, fuel cells and nuclear fusion energy.    ADVANTAGE - The process does not require higher voltage during practice. It does not limit the use of hydrogen gas product produced by the apparatus. It does not use non-renewable energy source, e.g. fossil fuel containing hydrocarbons. It uses small amount of energy without using electrolysis.    DETAILED DESCRIPTION - Hydrogen gas generator comprises operation fluid supply unit, body, dielectric implant, separator and collector. The supply unit supplies operation fluid after highly purifying the operation fluid and pressurizing the operation fluid with a pressure. The body has passage where the operation fluid flows. The dielectric implant passes the operation fluid through the passage slot and generates an electric impulse with a high potential by a cavitations emission. The dielectric implant is implanted in the passage of the body. The separator separates ions of the operation fluid based on electric polarities of the ions by supplying magnetic field to a flow of operation fluid ionized by the electric impulse. The collector separately collects the ions separated by the separator and generates hydrogen gas.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the hydrogen gas generator.    Body (10)    Another pipe (12)    Dielectric implant (20)    Passage slot (21)    Separator (50)    Channel (51)    Magnetic bodies (52)    Separation channels (53)    Collector (60)    Input pipe (61)    Catalytic plate (62)    Membrane (63)    Three discharging pipes (64-66)    Two hydrogen tanks (71-72)    Check valve (74)