Abstract:
A calibration device for a power amplifier includes a calculation unit, a first storage unit and a multiplier. The calculation unit is utilized for generating a calibration factor according to a value of a characteristic parameter of the power amplifier. The first storage unit coupled to the calculation unit, for storing the calibration factor. The multiplier is coupled to the first storage unit and a baseband unit, for multiplying a baseband signal outputted from the baseband unit by the calibration factor for generating an input signal to the power amplifier.
Abstract:
A diffusion film molding tool and a manufacturing process thereof includes a locating member disposed on one side of a base plate; multiple micro-particles are arranged and secured on the base plate using the locating member; one side of the base plate disposed with those micro-particles are given processes of deposition and plating to form the diffusion film molding tool; the finished diffusion film molding tool includes a substrate; multiple indents are disposed on one surface of the substrate; and multiple microstructures corresponding to each and all those indents are molded on the diffusion film when the diffusion film molding tool is applied in the production of the diffusion film.
Abstract:
A display device includes a display panel, a flexible printed circuit and a back light module. The flexible printed circuit is suitable for supporting the driving element and is electrically connected to the display panel. The back light module includes at least one light source, a first frame and a second frame. The light source is disposed between the first frame and the second frame, and the display panel and the flexible printed circuit are disposed at one side of the first frame, wherein the first frame has at least an opening, the second frame has a element contacting surface, the driving element is disposed on the flexible printed circuit, and the element contacting surface protrudes from the opening for being connected to the driving element.
Abstract:
An anti-deformation mechanism for an axial rod motor comprising a base, two vertical fixing seats, two axial fixing seats, two axial screws, a stator and a mover arranged on the stator. The two vertical fixing seats are arranged on the base to support the stator vertically. The two axial fixing seats are arranged on the base and located outside the two vertical fixing seats. Each of the two axial fixing seats is provided with a fixing through hole for insertion of the axial screw. The stator is an elongated cylindrical rod and provided with an axial screw hole at each of two ends thereof to be screwed with the axial screws. Both ends of the stator are fixed by the vertical fixing seats and the axial screws, and synchronously, the two axial screws apply pull forces to the stator to prevent the bending deformation of the stator.
Abstract:
A current balancing circuit includes a voltage detecting circuit having a detecting diode, and a control switch having an input part and an output part, the input part is coupled in series to the detecting diode and disposed opposite to the detecting diode for detecting abnormal and/or reverse voltages and for preventing electric circuits or facilities from being damaged by the abnormal and/or reverse voltages. The input part may be a photodiode having a positive or negative side coupled to the negative or positive side of the detecting diode. A resistor or a divider diode may be used to protect the voltage detecting circuit.
Abstract:
A linear table with an adjustable dust-proof structure is locked with a loading rack on each end of a stator by screw, and each end of an elongated sheet-like dust-proof structure is located on each of the two loading racks. As compared to the conventional plate-like dust-proof structure, the weight of the dust-proof structure of the present invention is widely reduced, thus avoiding the problem of structure bending downwards. Moreover, adjusting the distance between the two loading racks can adjust the strain of the dust-proof structure, further preventing the dust-proof structure from bending downwards.