469 results about "Wire resistance" patented technology

The present invention provides a semiconductor device which can prevent a current from flowing into a display element at a signal writing operation, without increasing power consumption and without changing a potential of a power supply for supplying a current to a load in each row. When a predetermined current is supplied to a transistor to set a gate-source voltage of the transistor, a potential of a gate terminal of the transistor is adjusted so as to prevent a current from flowing into a load which is connected to a source terminal of the transistor. Thus, a potential of a wire connected to the gate terminal of the transistor is made different from that of a wire connected to a drain terminal of the transistor. At that time, an operation of a transistor is shifted so as to allow a large amount of current to flow, and influences by intersection capacitance parasitic to a wire or the like or wire resistance are hardly caused, and a set operation is conducted quickly.

An antitheft sensor system includes a covering which is placed around an object to be protected (such as a cable). Sensor wires are located in the covering. Signals are sent through the sensor wires and the wires are monitored for changes in the signals (such as changes in wire resistance) that may indicate theft or tampering. The system allows determination of theft or tampering of objects which may be operated only infrequently, such as conductors bridging rails.

A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.

A high-reliability power composite integrated semiconductor device uses thick copper electrodes as current collecting electrodes of a power device portion to resist wire resistance needed for reducing ON-resistance. Furthermore, wire bonding connection of the copper electrodes is secured, and also the time-lapse degradation under high temperature which causes diffusion of copper and corrosion of copper is suppressed. Still furthermore, direct bonding connection can be established to current collecting electrodes in the power device portion, and also established to a bonding pad formed on the control circuit portion in the control circuit portion. A pad area at the device peripheral portion which has been hitherto needed is reduced, so that the area of the device is saved, and the manufacturing cost is reduced.

Methods and apparatuses for transient analyses of a circuit using a hierarchical approach. In one embodiment, the cells are grouped locally on the power supply network according to average power dissipation. A time varying current of each cell group is estimated using a probabilistic approach to represent the cell group so that the probability of a more severe waveform for the current of the cell group is under a certain level. For example, the cells in a group are partitioned as switching cells and non-switching cells using cell toggle rates for the determination of the time varying current. The circuit model of the power supply network includes the current sources according to the estimated time varying currents for the cell groups, the power supply wire resistance, the power supply to ground wire capacitance, well capacitance and the de-coupling capacitance from non-switching cells.

A conductivity detector detects the electrical conductivity of a fluid under analysis for determining chemical or physical properties of the fluid that are related its electrical properties. Such conductivity detectors may find use in, for example, hemodialysis systems for analyzing the effectiveness of the hemodialysis treatment. In an aspect, to improve accuracy of the conductivity measurements, the detector utilizes four-wire resistance measurement methods. In another aspect, to avoid fouling or contamination of the electrodes, the detector utilizes capacitively-coupled contactless conductivity detection (C4D) methods so that the electrodes are physically unconnected to the fluid contained in a fluid chamber. In a possible further aspect, the fluid chamber may be a disposable component removable from the electrodes. The conductivity detector can include other features such as calibration circuits and features for electrically isolating the fluid under detection from the fluid in the rest of the system.

Methods and apparatuses for transient analyses of a circuit using a hierarchical approach. In one embodiment, the cells are grouped locally on the power supply network according to average power dissipation. A time varying current of each cell group is estimated using a probabilistic approach to represent the cell group so that the probability of a more severe waveform for the current of the cell group is under a certain level. For example, the cells in a group are partitioned as switching cells and non-switching cells using cell toggle rates for the determination of the time varying current. The circuit model of the power supply network includes the current sources according to the estimated time varying currents for the cell groups, the power supply wire resistance, the power supply to ground wire capacitance, well capacitance and the de-coupling capacitance from non-switching cells.

A work-table is described, comprising a frame (2) which is especially adjustable with respect to its height and for whose adjustment there is provided at least one electric motor (4) with a control device (6) acting upon an actuating drive (5). In order to provide advantageous constructional conditions it is proposed that at least one load-dissipating part (13) of the frame (2) is provided with a wire resistance strain gauge (12) or is supported on a force transducer (11), and that the wire resistance strain gauge (12) or the force transducer (11) triggers the control device (6) for the motor (4) depending on the loading of the load-dissipating part (13).

A wire load estimating method comprises (1) reading a netlist; (2) generating connection information including the names of signals, the identification names and the names of pins of instances which include cells, macro blocks and synthesized blocks as described in the netlist; (3) dividing an area of a chip into two or more regions and determining connection point coordinates for each of the regions by the use of the connection information and locations of the instances as placed; (4) determining a wiring path by the use of the connection point coordinates; and (5) estimating a wire capacitance value and a wire resistance value with reference to the wiring path.

The invention provides an electronic cigarette capable of achieving automatic control of an atomization wire resistance value. The electronic cigarette comprises the atomization wire, and is characterized in that the atomization wire is an alloy wire. The electronic cigarette further comprises a resistance acquisition circuit, a single chip microcomputer and a power adjusting circuit, wherein the resistance acquisition circuit is in series connection with the atomization wire, the single chip microcomputer is connected with the output end of the resistance acquisition circuit and is capable of processing analog signals outputted by the resistance acquisition circuit, the power adjusting circuit is connected with the single chip microcomputer and controlled by the same, and the output end of the power adjusting circuit is connected with the atomization wire. The electronic cigarette has the advantages that the electronic cigarette is applicable to the alloy atomization wire small in resistivity temperature coefficient; when the resistance value of the atomization wire changes, a real-time voltage value at two ends of the atomization wire is acquired and converted into a real-time resistance value after being amplified and converted, and the single chip microcomputer controls and adjusts power loaded on the atomization wire according to a result obtained by comparing the real-time resistance value with a preset resistance value so as to adjust the resistance value of the atomization wire to be equal to the preset resistance value; the electronic cigarette has the automatic resistance value detection function and the automatic resistance value control function.

The invention discloses a three-dimensional fluid stress sensor based on a flexible MEMS (microelectromechanical system) technology and an array thereof. The three-dimensional fluid stress sensor based on the flexible MEMS technology comprises a capacitive pressure stress sensor and a hot shearing stress sensor, wherein the capacitive pressure stress sensor comprises an upper electrode plate in an upper electrode layer, a pressure stress-sensitive film, and a lower electrode plate in a lower electrode layer; a cavity structure of the pressure stress sensor is formed in a supporting structurallayer; the hot shearing stress sensor consists of four groups of double hot-wire resistors which are in a square arrangement; and a hot-wire resistance signal is led from a flexible substrate into a detection circuit through a wire leading post. The three-dimensional fluid stress sensor is based on a flexible substrate technology and a back wire leading technology, and adopts an MEMS processing technology and a bonding technology; the magnitude of the pressure stress of a fluid is measured through the change of a capacitive signal; the magnitude and the direction of a two-dimensional shearingstress within a plane are measured through the change of the double hot-wire resistance; the capacitive signal and a shearing stress signal are led into the detection circuit and do not interfere with each other; and the three-dimensional fluid stress sensor based on the flexible MEMS technology has the advantages of relatively high resolution, small volume, and batch processing at low cost.

Methods and apparatuses for transient analyses of a circuit using a hierarchical approach. In one embodiment, the cells are grouped locally on the power supply network according to average power dissipation. A time varying current of each cell group is estimated using a probabilistic approach to represent the cell group so that the probability of a more severe waveform for the current of the cell group is under a certain level. For example, the cells in a group are partitioned as switching cells and non-switching cells using cell toggle rates for the determination of the time varying current. The circuit model of the power supply network includes the current sources according to the estimated time varying currents for the cell groups, the power supply wire resistance, the power supply to ground wire capacitance, well capacitance and the de-coupling capacitance from non-switching cells.

An object is to reduce degradation of display quality due to variation in luminance of light-emitting elements, which is caused by variation in voltage because of wiring resistance of current supply lines, and to improve the display quality. In a voltage program period, a terminal serving as a source of a transistor for driving an EL element is electrically connected to a first wiring to which a first potential is supplied. In a light-emitting period, the terminal serving as the source of the driving transistor is electrically connected to a second wiring to which a second potential is supplied. Accordingly, voltage between a gate terminal and the source terminal of the driving transistor can be held without being adversely affected by wiring resistance of the current supply lines.

The invention discloses a temperature measurement circuit, which includes a temperature sensor circuit, a constant current source and a first operational amplifier. The negative pole of the power line drawn from the second end and the positive pole of the sensing lead and the negative pole of the sensing lead drawn from the first and second ends of the temperature sensor respectively, the constant current source is connected to the positive pole of the power line of the temperature sensor circuit, and the positive and negative poles of the first operational amplifier The negative input end is respectively connected to the positive electrode of the sensing lead and the negative electrode of the sensing lead of the temperature sensor circuit, the output end outputs a voltage-temperature curve, and the negative electrode of the power line of the temperature sensor circuit is coupled to the ground. The invention adopts a four-wire system, so that the positive and negative input ends of the first operational amplifier are respectively connected to the positive electrode of the sensing lead and the negative electrode of the sensing lead of the temperature sensor circuit. The effect of wire resistance on the output result.

A conductivity detector detects the electrical conductivity of a fluid under analysis for determining chemical or physical properties of the fluid that are related its electrical properties. Such conductivity detectors may find use in, for example, hemodialysis systems for analyzing the effectiveness of the hemodialysis treatment. In an aspect, to improve accuracy of the conductivity measurements, the detector utilizes four-wire resistance measurement methods. In another aspect, to avoid fouling or contamination of the electrodes, the detector utilizes capacitively-coupled contactless conductivity detection (C4D) methods so that the electrodes are physically unconnected to the fluid contained in a fluid chamber. In a possible further aspect, the fluid chamber may be a disposable component removable from the electrodes. The conductivity detector can include other features such as calibration circuits and features for electrically isolating the fluid under detection from the fluid in the rest of the system.

The instant invention describes a resistant-type device, adaptable for use in exercise, utilizing a resistance cable constructed of multiple layers of resistance and protection. The resistance cable has a resilient inner core having a plurality of elastic members arranged in a substantially parallel manner. The plurality of elastic members are interlaced together to form a unitary stretchable main body unit, a first elastic looped portion positioned at a first end, and a second elastic looped portion positioned at a second end. In addition to the inner resilient core, resistance cable also contains at least one outer member and a protective layer coaxially aligned with the inner core. The outer member length is substantially coextensive with the length of the elastic inner core unitary stretchable main body unit. The device therefore, provides for the extension of the unitary stretchable main body unit from a first resting position to a second extended position upon application of a pulling force, whereby resistance to stretching of the unitary stretchable main body unit when extended from the first resting position to the second extended position upon application of the pulling force is greater than the resistance of each of the plurality of elastic members individually.

An exemplary temperature measurement device includes a reference voltage source, a three-wire thermal resistor, a voltage drop amplifier, an operational amplifier and compensation resistors. By using connecting wires with resistance values of the compensation resistors, a relation between an output signal and a resistance of the thermal resistor gives rise to a monotonous function, which is independent of the resistances of the connecting wires. After A / D conversation of an output signal, the resistance of the thermal resistor and a temperature can be calculated based on known functions. Therefore, within an entire measurement range and any length of cable, an influence of the wire resistances can be compensated without switches or jumpers.

The invention discloses a self-verification automatic test system, a device and a method for on-resistance. The system comprises program-controlled multi-channel selectors, a connecting cable, a self-verification component, a digital multimeter and a control module, wherein the program-controlled multi-channel selectors are used for controlling opening or closing of channels by turning on or off a switch; the connecting cable comprises an A end, a B end and a C end; the self-verification component is used for verifying the on-resistance of a tooling; the digital multimeter is used for sending a measured value of the on-resistance of the tooling and a measured value of the on-resistance of tested equipment to the control module; the digital multimeter is set in a four-wire resistance measurement mode by the control module; the control module controls the program-controlled multi-channel selectors to change the channels, starts testing the on-resistance of the tooling and receives the measured value of the on-resistance of the tooling sent by the digital multimeter; the control module controls the program-controlled multi-channel selectors to change the channels, starts testing the on-resistance of the tested equipment, and receives the measured value of the on-resistance of the tested equipment sent by the digital multimeter; and finally a true value of the on-resistance of the tested equipment is obtained.

The present invention provides a semiconductor device which can prevent a current from flowing into a display element at a signal writing operation, without increasing power consumption and without changing a potential of a power supply for supplying a current to a load in each row. When a predetermined current is supplied to a transistor to set a gate-source voltage of the transistor, a potential of a gate terminal of the transistor is adjusted so as to prevent a current from flowing into a load which is connected to a source terminal of the transistor. Thus, a potential of a wire connected to the gate terminal of the transistor is made different from that of a wire connected to a drain terminal of the transistor. At that time, an operation of a transistor is shifted so as to allow a large amount of current to flow, and influences by intersection capacitance parasitic to a wire or the like or wire resistance are hardly caused, and a set operation is conducted quickly.

A detection module and remote load voltage sensor determine a location of a parallel arc for a power circuit between a power source and a load in real time. The detection module provides a value of voltage from the power source. A current sensor measures a value of current flowing in the power circuit to or from the power source. The remote load voltage sensor measures a value of voltage at the load. A microprocessor determines the parallel arc location from the value of voltage from the power source, the value of current, the value of voltage at the load, and a wire resistance or conductance per unit length of the power circuit. In one case, connector resistance is accounted for. In another case, the load voltage is encoded at a predetermined frequency using a switched precision resistor near the load, thereby providing a power line carrier type communication.

The invention provides low-temperature polymer conductive paste and a preparation method thereof. The low-temperature polymer conductive paste comprises conductive filler and carrier adhesives for carrying the conductive filler, wherein the carrier adhesives comprise functional resin including phenoxy resin and fluorine resin. The low-temperature polymer conductive paste has the advantages that a mixed resin system is adopted, wherein the phenoxy resin has excellent carrying capacity for the conductive filler and is good in adhesion force, and the fluorine resin is excellent in conductive filler dispersing performance, has low surface energy and is good in base material wetting performance and high in flexibility, therefore, high filling for conductive powder can be achieved, wetting and dispersing the conductive powder are also benefited, and further, achievement of high conductivity, low wire resistance, low contact resistance, good adhesion force and high weatherability after the paste is cured are facilitated.

A high temperature sensor allowing for accurate measurement including wires running through an oxygen ion conductor and connecting to electrodes sandwiching an oxygen ion conductor substrate having an electrical resistance far smaller than the combined resistance (Rpvs) appearing across the lead wires, where Rpvs is determined by way of a pulse voltage sensing method applied across the electrodes. In the case of a two cavity sensor for NOx measurement, Rpvs is not less than 2.6 times greater, or more preferably 4 times greater than the resistance of the wires. In another embodiment, a common internal oxygen reference source cavity is formed inside the oxygen ion conductor so as to provide the same oxygen partial pressure base for other cavities.

A scanning line, a signal line, a first current supply line, and a second current supply line are formed on a glass substrate, a first electrode is formed on the wiring layer comprising the above members, an organic layer comprising a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer is formed on the first electrode, a second electrode is formed as cathode on the electron injection layer, the first electrode as anode is connected to a plus terminal of a power source through the driving devices and the first current supply line, whereas the second electrode as cathode is connected to a minus terminal of the power source, and is connected to the second current supply line in the display region of each pixel, with a contact hole serving as a feeding point, whereby wiring resistance due to the second electrode is reduced, and variations in the brightness of a panel is reduced.

The invention discloses a low-dropout voltage regulator, including an error amplifier, an output tube and a feedback circuit; wherein, the output tube receives an input voltage and generates an output voltage under the control of the error amplifier; the feedback circuit provides a feedback voltage which can reflect the output voltage; the error amplifier controls the output tube according to the difference value between a reference voltage and the feedback voltage. The output voltage provides a voltage for loading by a wire resistance. The low-dropout voltage regulator further includes a current copy circuit which can generate a copy current which is in proportion to the current of the output tube, the copy current is led out from the feedback circuit to swig up the output voltage so as to make up the voltage drop of a load current on the wire resistance. Therefore, the load regulation rate of the low-dropout voltage regulator is lowered.

The invention discloses a screen positioning algorithm of a four-wire resistance type touch screen, comprising the steps of S1, initial generation of matching proportional factors in fixed point calibration; S2, dynamic modification of the matching proportional factors in the use process of a user; S3, coordinate transformation from touch point to display pixel point; and S4, software code realization of the algorithm. The invention realizes a specific software algorithm that a click point for clicking the touch screen and a display area on a display screen can correctly and correlatively match.

The invention discloses a capacitive touch screen. The capacitive touch screen comprises a touch-control basic layer and an induction basic layer, wherein the side, provided with X lines of ITO film conductive electrodes, of the touch-control basic layer is attached to the back side, provided with Y lines of conductive electrodes, of the induction basic layer face to face through optical transparent adhesive. The capacitive touch screen is of a G1M structure, wherein G refers to a glass sensor and serves as a carrier of the touch-control basic layer, 1M is a PET film sensor with a metal mesh which is low in wire resistance and low in sheet resistance printed on the surface and serves as a carrier of the induction basic layer, and the 1M is attached to the G to prevent film explosion. The capacitive touch screen has the advantages that the manufacturing is simple and cost is low. The capacitive touch screen is the best choice among capacitive touch screens with large sizes and middle sizes and particularly with sizes larger than 7 inches for a user.

Immediately after formation of, for example, power supply lines formed on a same substrate and set to a same potential, defect examination is applied and a repair line is formed connecting deficient defect (disconnection) portion of the power supply line, directly covering the power supply line. The repair line can be formed through a drawing process by scanning with a laser beam within a gas atomospshere of a conductive material such as, for example, tungsten, to connect ends of the disconnection. By repairing the power supply line by directly covering the power supply line, an increase in a line resistance is inhibited and flatness above the repair line is further improved.

A high-reliability power composite integrated semiconductor device uses thick copper electrodes as current collecting electrodes of a power device portion to resist wire resistance needed for reducing ON-resistance. Furthermore, wire bonding connection of the copper electrodes is secured, and also the time-lapse degradation under high temperature which causes diffusion of copper and corrosion of copper is suppressed. Still furthermore, direct bonding connection can be established to current collecting electrodes in the power device portion, and also established to a bonding pad formed on the control circuit portion in the control circuit portion. A pad area at the device peripheral portion which has been hitherto needed is reduced, so that the area of the device is saved, and the manufacturing cost is reduced.