Abstract: In an intelligent electric motor, the rotating speed and performance of a conventional electric motor is changed based on a means controlled by a computer, and the means is installed in the housing of the intelligent electric motor. For example, in the intelligent AC motor, the three-phase power is connected to the three-phase stator winding by three groups of control gates. All of the gates are switched on or off by a signal from the control means. When each of the three groups of control gates is switched on sequentially, the three-phase power is connected to the three-phase stator winding of the three-phase intelligent electric motor at the speed &dgr; in turn, so that the speed of the rotating magnetic field of the intelligent electric motor n0 is increased by a sped &dgr;. Therefore, the actual speed of the motor, n′0, is equal to n0±&dgr;, so the speed and performance of the motor is changed.

Abstract: The present invention relates to an improved disk-type faucet that can be used to replace the ball-type faucet. The faucet includes a switching cylinder that can be rotationally disposed within the housing. The switching cylinder includes a controlling stem atop. The switching cylinder further includes a pair of annular grooves that are located below the controlling stem and each of them being disposed with an O-ring, respectively. The lower end of the switching cylinder includes a semicircular tab and a resilient plate for blocking the water flow. The semicircular tab is further enveloped with a bushing that is fixedly fastened by the resilient plate. By the biasing action of the resilient tab, the bushing and the resilient plate are provided with an allowable movement within the housing such that the wearing resulted from over-tight can be therefore prevented and the manipulation can be more conveniently conducted to open or close the faucet.