The present invention relates to laundering machine and method. The signal processing component is configured to receive a clock signal and the clock signal is derived from the local oscillator output. The feeding probe electrically is embedded in the dielectric layer, and the feeding probe excites the dielectric layer such that the electromagnetic field radiates from the radiating surface and achieves circular polarization radiation. The voltage conversion circuit may be an integrated circuit that is in the lamp base and connected between the lamp terminal and the light emitting element. The variable speed wind turbine may also use scalar power control to provide more precise control of electrical quantities on the power grid.