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Mig welding maching having 115v inverter

ActiveUS20050061791A1Reduce weightIncrease portabilityArc welding apparatusVoltEngineering
The present invention is directed to a MIG welding machine having a 115 volt inverter. Incorporation of the 115 volt inverter into the MIG welding power source reduces the weight of the power source thereby increasing its portability. The power source may include a power factor correction circuit to provide a near-unity power factor such that output power of the inverter is more efficiently provided. Additionally, the 115 volt inverter is constructed such that for short periods of time, the inverter may output power at a level that exceeds its power rating.
Owner:ILLINOIS TOOL WORKS INC

Method for directionally advertising

The invention relates to a method for directionally advertising, wherein an advertisement information displaying terminal is arranged and used for transforming an advertisement information signal to image and sound signals and outward expressing the image and sound signals; a human body information collector is arranged and used for collecting and reading human body information of a specific human body of advertisement information displayed by the advertisement information displaying terminal in real time; and the advertisement information displaying terminal and the human body information collector are respectively connected with a control system. The method comprises the steps of when the specific human body stands nearby the advertisement information displaying terminal and reads the advertisement information displayed by the advertisement information displaying terminal, collecting the human body information of the specific human body by utilizing the human body information collector, transmitting the human body information to the control system; comparing the human body information with human body information parameters in an information storing part through an information comparing part; confirming the advertisement information corresponding to the human body information parameters; and finally, playing the advertisement information through the advertisement information displaying terminal.
Owner:深圳华北工控股份有限公司

Speech Synthesizing Apparatus

A corpus-based speech synthesizing apparatus is provided which has a text analysis unit for analyzing a given sentence in text data and generating phonetic symbol data corresponding to the sentence; a prosody estimation unit for generating a prosodic parameter representing an accent and an intonation corresponding to each phonetic symbol data according to a preset prosodic knowledge base for accents and intonations; speech-unit extraction unit for extracting all the speech segment waveform data of a predetermined speech unit part from each speech data having the predetermined speech unit part closest to the prosodic parameter, based on a speech database which stores therein plural kinds of predetermined selectively prerecorded speech data only such that the speech database has a predetermined speech unit suitable for a specific application of the speech synthesizing apparatus; and a waveform connection unit for generating synthesized speech data by performing sequentially successive waveform connection of the speech segment waveform data groups such that the speech waveform of the speech segment waveform data groups continues, wherein the respective functional units, a data input unit, a speech conversion processing unit, and a speech speed conversion unit is added or removed as desired depending on a specific application and a scale of the apparatus.
Owner:EE I KK

Methd for industrilized organic refuse treatment and fly maggot and worm lizard cultivation

The present invention discloses a method for industrially-treating organic refuse and culturing maggot and earthworm, including the steps of refuse treatment, maggot cultivation and earthworm cultivation, etc. It is simple in process, can repeatedly utilize organic refuse, and does not pollute space and underground water, etc.
Owner:潘金环

Turbine mechanical output computation device and gas turbine control device equipped therewith

A turbine mechanical output computation device computes a gas turbine mechanical output P from the following equation P=Pe+J×g×(2⁢π60)2×N×ⅆNⅆtwhere Pe represents a generator effective power measured by a generator effective power wattmeter, N represents the rotational speed of a gas turbine measured by a gas turbine tachometer, J represents the moment of inertia of the gas turbine, and g represents gravitational acceleration. A combustion air amount controller controls the amount of combustion air based on the gas turbine mechanical output P.
Owner:MITSUBISHI HITACHIPOWER SYST LTD

Control Circuit and Control Method of Switching Power Supply

What disclosed are a control circuit and a control method of a switching power supply, according to feedback signals on a pin FB and a pin CS, a constant current control module generates and outputs a control signal to control an output current of the switching power supply, thereby regulating duty cycle of a first transistor adaptively and controlling an output current Io of a power supply system to be constant; according to the feedback signals on the pin FB and on the pin CS, a constant current precision compensation module adaptively regulates circuit parameters of the constant current control module and a sample-and-hold module, preventing precision of constant current output from being influenced by change of a working mode and / or by variation of input conditions; when an output voltage changes, QR mode keeps unchanged or depth of a CCM keeps approximately constant.
Owner:WUXI CHIPOWN MICROELECTRONICS
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