59results about How to "High-frequency noise" patented technology

The present invention is directed to a system and method of remotely controlling a welding machine with command signals transmitted to the welding power source across a weld cable connecting the power source to a remote device, such a wire feeder. A transmitter transmits the control commands containing desired welding operational parameters to a receiver disposed in the power source across a weld cable also designed to carry welding power from the power source to the wire feeder.

A method and system for determining whether arcing is present in an electrical circuit. The methods includes sensing a change in an alternating current in the circuit and developing a corresponding input signal, analyzing the input signal to determine the presence of broadband noise in a predetermined range of frequencies, and producing a corresponding output signal. The method further includes determining a type of load connected to the electrical circuit, based at least in part upon the input signal and the output signal, incrementing one or more of a plurality of counters in a predetermined fashion in accordance with the input signal and the output signal and determining whether an arcing fault is present based at least in part on the states of one or more of a plurality of counters. The method also includes decrementing one or more of the plurality of counters based upon a secondary analysis.

A method for performing a frame erasure concealment for a higher-band signal involves calculating a periodic intensity of the higher-band signal with respect to pitch period information of a lower-band signal; comparing the periodic intensity to a preconfigured threshold and, if the periodic intensity is greater or equal to the preconfigured threshold, performing the frame erasure concealment with a pitch period repetition based method. If the periodic intensity is less than the preconfigured threshold, performing the frame erasure concealment with a previous frame data repetition based method. A device for performing a frame erasure concealment includes a periodic intensity calculation module, a pitch period repetition module, and a previous frame data repetition module. The pitch period repetition module performs the frame erasure concealment with a pitch period repetition based method; and the previous frame data repetition module performs the frame erasure concealment with a previous frame data repetition based method.

A plurality of probes such as a signal probe (3) and a power supply probe (4) are provided into a metal block (1) so as to penetrate. Each of the probes has a movable pin (11). A tip of the movable pin is projecting from one surface of the metal block (1). And a projection length of the tip is variable. A DUT 20 is pressed onto the surface of the metal block (1) to contact between electrode terminals (21 to 24) and tips of the probes to test characteristics of the DUT. At least one of the probes is capacity loaded probe having a capacitor by providing a dielectric layer and a metal film to peripheral of the probe. As a result, noise can be removed reliably. Additionally, when the capacity loaded probe is used as the power supply probe, a voltage drop is reduced at the power supply terminal in a case of change of the output.

An N-type deep well is used to protect a circuit from a noise. However, a noise with a high frequency propagates through the N-type deep well, and as a result, the circuit that should be protected malfunctions. To reduce the area of the N-type deep well. For instance, in the present invention, a semiconductor device comprises a semiconductor substrate of a first conductivity type, a digital circuit part and an analog circuit part provided on the semiconductor substrate, a plurality of wells of the first conductivity type formed in either the analog circuit part or the digital circuit part, and a first deep well of a second conductivity type, which is the opposite conductivity type to the first conductivity type, isolating some of the plurality of wells from the semiconductor substrate.

An electrical plug connector includes a first terminal module, a second terminal module, and a metallic contact member. The first terminal module and the second terminal module are received in a metallic shell. The metallic contact member is between the first terminal module and the second terminal module. The metallic contact member separates the first terminal module from the second terminal module. Moreover, two ends of the metallic contact member are respectively in contact with the ground terminals of the first plug terminals or in contact with the ground terminals of the second plug terminals.

An inexpensive multilayer wiring circuit board capable of conducting high frequency switching operation on the circuit while the generation of high frequency noise is being suppressed by reducing the inductance of the circuit in provided. A multilayer wiring circuit board comprising: an uppermost layer designated as a first layer on which parts are mounted; a second layer on which one of a ground layer and an electric power source layer is arranged; a third layer on which the other is arranged; and an insulating layer arranged between the ground layer and the electric power source layer. A resin layer having a thermoplastic adhesion property on both faces is used as material of the insulating layer arranged between the electric power source layer and the ground layer.

An exhaust system includes a muffler, an inlet pipe, and an exhaust pipe. The muffler includes an inlet hole adapted to receive the inlet pipe and an outlet hole to receive the exhaust pipe. The inlet pipe has a first and second linear portions extending from a radiused portion, the first and second linear portions being generally perpendicular to one another. The radiused portion and the first linear portion of the inlet pipe are positioned within the muffler. Portions of the inlet pipe and exhaust pipe located within the muffler may optionally include perforations and be closed off.