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A small generator includes a hydraulic turbine provided in a fluid path rotating with a passage of a fluid in a predetermined flow and a rotator coupled to the hydraulic turbine rotating together with the hydraulic turbine which acts as a rotor portion opposed to a stator portion having multiple lay

A small generator includes a hydraulic turbine provided in a fluid path rotating with a passage of a fluid in a predetermined flow and a rotator coupled to the hydraulic turbine rotating together with the hydraulic turbine which acts as a rotor portion opposed to a stator portion having multiple layers in a stepping motor including the stator portion, wherein the rotor portion relatively rotates with respect to the stator portion with the passage of the fluid, thereby generating a power.

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1. A small generator comprising:a hydraulic turbine, provided in a fluid path, rotating by passing a fluid in a predetermined flow rate; a rotator, coupled to the hydraulic turbine, rotating together with the hydraulic turbine, the rotator acting as a rotor portion opposed to a stator portion having

1. A small generator comprising:a hydraulic turbine, provided in a fluid path, rotating by passing a fluid in a predetermined flow rate; a rotator, coupled to the hydraulic turbine, rotating together with the hydraulic turbine, the rotator acting as a rotor portion opposed to a stator portion having multiple layers in a stepping motor including the stator portion, wherein the rotor portion rotates relatively with respect to the stator portion by with passing the fluid to generate a power. 2. The small generator according to claim 1, wherein a detent torque generated between the stator portion and the rotor is set to be canceled by arranging the layers each other.3. A small generator comprising:a hydraulic turbine, provided in a fluid path, rotating by passing a fluid in a predetermined flow rate; a rotator, coupled to the hydraulic turbine, rotating together with the hydraulic turbine, the rotator acting as a rotor portion opposed to a stator portion having a plurality of coil portions in a brushless motor including the stator portion, wherein the rotor portion relatively rotates with respect to the stator portion by passing the fluid to generate a power. 4. The small generator according to claim 3, wherein a relationship between the number of poles magnetized onto the rotor portion and the number of coil portions of the stator portion is set to one of 2-3, 4-3 and 4-6.5. The small generator according to claim 1, further comprising:an injecting member including an injecting hole acting as a part of the fluid path and serving to throttle a flow for a passage to inject a fluid onto a blade portion of the hydraulic turbine. 6. A Water Tap apparatus comprising:a valve opening degree controlled to include at least two modes of a water saving mode in which a flow of a fluid to flow to a fluid path and a normal mode for a normal and a small generator according to claim 1 arranged on the fluid. 7. The Water Tap apparatus according to claim 6, wherein the flow in the water saving mode is set to 2.0 liters/minute to 3.0 liters/minute.8. The small generator according to claim 3, further comprising:an injecting member including an injecting hole acting as a part of the fluid path and serving to throttle a flow for a passage to inject a fluid onto a blade portion of the hydraulic turbine. 9. A Water Tap apparatus comprising:a valve opening degree is controlled to include at least two modes of a water saving mode in which a flow of a fluid to flow to a fluid path and a normal mode for a normal flow; and a small generator according to claim 3 arranged on the fluid. 10. The Water Tap apparatus according to claim 9, wherein the flow in the water saving mode is set to 2.0 to 3.0 liter/minute.