Abstract: A projection device includes multiple optical fiber mounting mechanisms. Each of the optical fiber mounting mechanisms includes an optical fiber extending along a first direction as an axis direction, a signal circuit extending along the first direction, and a mounting structure. The optical fiber includes an engaging section. The mounting structure surrounds the engaging section of the optical fiber and the signal circuit. The mounting structure includes an installation portion extending radially relative to the first direction. The installation portion includes a surface and multiple elements exposed from the surface. The surface includes a normal direction parallel with the first direction. A first length of the engaging section of the optical fiber protruding from the surface of the installation portion is longer than lengths of the elements protruding from the surface.
Abstract: A pulsed-DC power generator is used to sputter a substrate in a chamber, and the power generator includes a first voltage source, a second voltage source, a switch unit, a control unit, and a detection unit. The control unit provides a first control signal to control the switching of the switch unit to integrate a first voltage of the first voltage source and a second voltage of the second voltage source into a pulse voltage. The control unit adjusts parameters of a first predetermined time period for arc extinction when the pulse voltage is in a working time period of the first voltage, and the number that a voltage value of the first voltage in a voltage variation to be higher than a range is higher than the number of occurrence.
Abstract: A power conversion system with ripple injection includes an AC-DC conversion unit, a voltage regulation unit, at least one DC-DC conversion unit, at least one load, and a first control unit. The voltage regulation unit provides a DC link and receives one portion of an input power as an energy storage power. Each DC-DC conversion unit receives the other portion of the input power as an output power. The at least one load correspondingly receives the output power for being supplied power. The first control unit is coupled to the DC link, the at least one DC-DC conversion unit, and the at least one load. The first control unit controls the at least one DC-DC conversion unit to adjust a magnitude of a ripple of the output power to perform a ripple injection operation according to a magnitude of a ripple of the input power.
Abstract: A heat dissipation assembly is disclosed and includes a fan, a vapor chamber and a heat dissipation fin set. The fan includes a fan frame, an impeller and a fan cover. The impeller is disposed on the fan frame and accommodated in an accommodation space. The impeller includes plural metal blades and a hub, and the plural metal blades are radially arranged on the periphery of the hub to form a dense-metal-blade impeller. The fan cover is assembled with the fan frame to form an outlet, and the fan cover includes an inlet. The vapor chamber includes an upper plate and a lower plate assembled with each other. The upper plate or the lower plate is connected to the fan cover, and the vapor chamber and the fan cover are coplanar. The heat dissipation fin set is connected to the lower plate and spatially corresponding to the outlet.
Abstract: A centrifugal fan is disclosed and includes a housing, a fan wheel, a first throat portion and a second throat portion. The housing includes a lower cover connected to an upper cover through a peripheral wall to form an accommodation space and an outlet. The upper cover includes an inlet communicated with the outlet. The fan wheel is disposed on the lower cover and accommodated in the accommodation space. The fan wheel is rotated along a rotation direction. The first throat portion is disposed adjacent to a lateral end of the outlet and protrudes from the peripheral wall toward the accommodation space. The second throat portion is disposed adjacent to another lateral end of the outlet, and protrudes from the peripheral wall toward the accommodation space. When the fan wheel is rotated along the rotational direction, an airflow is guided from the first throat portion to the second throat portion.
Abstract: A connecting end part of a slide lever has a tubular shape, and a front end part of a release lever is inserted in the connecting end part with a connection spring member therebetween. The connection spring member has a bent end located forward and wire parts extending rearward from the bent end. Protruding engagement parts are formed in the wire parts. The wire parts are placed inside the front end part, and the protruding engagement parts are made to protrude from engagement protrusion holes of the release lever, and then the tubular connecting end part of the slide lever is fitted on the outer side of the front end part. The protruding engagement parts engage with engagement holes of the slide lever, and its front lock part presses the inner surface of the connecting end part.