Abstract:
A power factor correction (PFC) circuit includes an inductor, a diode, a storage capacitor, a switch and a control unit. The input power has a voltage fluctuation V1. The storage component absorbs a first voltage fluctuation and a switch regulation circuit absorbs a second voltage fluctuation V2. Thus output voltage from the PFC circuit is not a conventional constant voltage but a voltage of a great ripple. The PFC circuit further has a harmonic regulation unit. The harmonic regulation unit generates a voltage signal containing 3rd harmonic. The control unit receives a feedback signal and the voltage signal containing 3rd harmonic to generate a reference to the inductor current. Therefore, the inductor current contains 3rd harmonic. Thus power fluctuation absorbed and released by the capacitor is smaller. As a result energy storage capacitance can be reduced significantly.
Abstract:
A power system for a vehicle may comprise an electric machine attached to an engine of the vehicle. The electric machine may comprise only one stator core; a stator main winding wound on the one stator core; a stator exciter winding wound on the one stator core. The stator main winding and the stator exciter winding may be magnetically independent from one another even though magnetic-field-isolation material is not interposed between the stator main winding and the stator exciter winding.
Abstract:
Devices and methods related to high-contrast liquid crystal displays (LCDs) are provided. For example, such an electronic device may include an LCD with two liquid crystal alignment layers not symmetric to one another and upper and lower polarizing layers respectively above and below the alignment layers. Light transmittance through the plurality of pixels may increase monotonically with gray scale voltage. The display may operate using a gray scale level 0 voltage higher than a minimum gray scale level 0 voltage capability of the display. Additionally or alternatively, liquid crystal molecular alignment axes of the two alignment layers may be offset from one another by an angle other than a multiple of 180 degrees. Additionally or alternatively, a first polarizing axis of the upper polarizing layer or a second polarizing axis of the lower polarizing layer, or both, may be neither parallel nor perpendicular to one of the liquid crystal molecular alignment axes.
Abstract:
The present invention discloses a method for checking MA integrity, including: creating an MEP a; determining, by an MEP c in an MA, whether an MEP b with the same source port information as the MEP a exists in the MA; if there exists an MEP b with the same source port information as the MEP a in the MA, no isolated and unmated MEP exists in the MA; if an MEP b with the same source information as the MEP a does not exist in the MA, an isolated MEP exists in the MA. The present invention also discloses an apparatus for checking an MA integrity and a method and an apparatus for adding an MEP. The present invention enables a user to know whether an MA is integral and ensures MA integrity.
Abstract:
Methods for processing substrates in twin chamber processing systems having first and second process chambers and shared processing resources are provided herein. In some embodiments, a method may include providing a substrate to the first process chamber of the twin chamber processing system, wherein the first process chamber has a first processing volume that is independent from a second processing volume of the second process chamber; providing one or more processing resources from the shared processing resources to only the first processing volume of the first process chamber; and performing a process on the substrate in the first process chamber.
Abstract:
Methods for processing substrates in twin chamber processing systems having first and second process chambers and shared processing resources are provided herein. In some embodiments, a method may include flowing a process gas from a shared gas panel to a processing volume of the first process chamber and to a processing volume of the second process chamber; forming a first plasma in the first processing volume to process the first substrate and a second plasma to process the second substrate; monitoring the first processing volume and the second processing volume to determine if a process endpoint is reached in either volume; and either terminating the first and second plasma simultaneously when a first endpoint is reached; or terminating the first plasma when a first endpoint is reached in the first processing volume while continuing to provide the second plasma in the second processing volume until a second endpoint is reached.
Abstract:
A method of soldering terminals of a micro-speaker on a circuit board comprises the following steps. Firstly, providing a circuit board having a pair of through holes passing therethrough, and two soldering sections defined surrounding the pair of through holes. Secondly, the soldering sections are plated with soldering tin. Thirdly, providing a pair of columned terminals, the terminal includes an upper portion, a low portion and a body connecting between the upper portion and the low portion. Fourthly, the low portion of the terminal is inserted into the corresponding through hole and the body is resisted on the soldering section. Fifthly, the soldering tin is heated to solder the body on the soldering tin. Finally, the upper portion of the terminal is soldered onto the corresponding end of the voice coil. As a result, soldering defective can be reduced.
Abstract:
A transfer medium is provided for receiving images formed on the medium by inks or toners comprising thermally diffusible colorants, including disperse dye and sublimation dye, and methods of using the medium to present images on substrates. The medium provides an opaque layer that allows transfer of the image from the medium to a substrate, and provides a background for the image when the image is transferred to a dark colored substrate, so that the dark colored substrate does not obscure the image.
Abstract:
A high frequency starter-generator system uses an electric machine design that does not employ rotating rectifiers installed on the rotor. The output frequency of such a starter-generator is increased by about 200% as compared with a conventional starter-generator with the same number of poles operating in the same speed range. This design allows significant weight and volume reductions of the electric machine while its reliability is increased. The present invention may find application in any starter-generator application, including more electric architecture-type aircraft designs currently in development.
Abstract:
Disclosed are compounds of Formula (1), including all geometric and stereoisomers, N-oxides, and salts thereof, Formula (1): wherein A1, A2, A3, A4, A5 and A6 are independently, selected from the group consisting of CR3 and N; provided that at most 3 of A1, A2, A3; A4, A5 and A6 is N; B1, B2 and B3 are independently selected from the group consisting of CR2. and N; each R3 is independently H, halogen, C1-C6 alkyl, C1-C6 haloalkyl, C3-C6 cycloalkyl, C3-C6 halocycloalkyl, C1-C6 alkoxy, C1-C6 haloalkoxy, C1-C6 alkylthio, C1-C6 haloalkylthio, C1-C6 alkylsulfinyl, C1-C6 haloalkylsulfinyl, C1-C6 alkylsulfonyl, C1-C6 haloalkylsulfo?yl, C1-C6 alkylamino, C2-G6 dialkylamino, —CN or —NO2; and R1, R2, R4, R5, W and n are as defined in the disclosure. Also disclosed are compositions containing the compounds of Formula (1) and methods for controlling an invertebrate pest comprising contacting the invertebrate pest or its environment with a biologically effective amount of a compound or a composition of the invention.