Abstract: Disclosed is a power conversion circuit, comprising a three-phase inductor and a switching conversion unit, and the three-phase inductor is integrated into a magnetic assembly, the magnetic assembly comprising: two magnetic yokes relatively parallel to each other; a first, a second and a third winding column spaced apart sequentially and located between the two magnetic yokes, and three windings wound around the first, the second and the third winding column in one-to-one correspondence for forming an phase inductor of the three-phase inductor respectively, and phase differences between power frequency currents flowing in any two of the windings are 120°; wherein when a reference current is applied to each of the windings, magnetic fluxes on the first and the third winding column have a first reference direction, and a magnetic flux on the second winding column has a second reference direction opposite to the first reference direction.

Abstract: A hand-held integral airbrush comprising a shell provided with a grab handle, wherein an upper accommodating cavity and a lower accommodating cavity are formed in the shell, wherein an airbrush assembly is arranged in the upper accommodating cavity of the shell, and wherein an air pump assembly is arranged in the lower accommodating cavity of the shell and is used for pumping compressed air into the airbrush assembly, wherein the hand-held integral airbrush further comprising a switch part, an operating button which comprises a first control part and a second control part, wherein an air pump and an airbrush are integrated in a the ergonomically designed grab handle, and wherein the air pump and the airbrush are controlled by the trigger-type operating button.

Abstract: A hand-held integral airbrush includes a shell provided with a grab handle, wherein an upper accommodating cavity and a lower accommodating cavity are formed in the shell, an airbrush assembly is arranged in the upper accommodating cavity of the shell, and an air pump assembly is arranged in the lower accommodating cavity of the shell and is used for pumping compressed air into the airbrush assembly. The hand-held integral airbrush further includes a switch part, as well as an operating button which includes a first control part and a second control part. According to the hand-held integral airbrush, an air pump and an airbrush are integrated in the ergonomically designed grab handle, and the air pump and the airbrush are controlled by the trigger-type operating button to operate, so that the hand-held integral airbrush is more convenient to hold and operate.