21 results about "Total resistance" patented technology

The application discloses a memory data reading stability method and device, which comprises the following steps: after determining a reference trimming module, adjusting the equivalent resistance value of the reference trimming module to the optimal resistance value obtained in advance, connecting the second output end of a sensitive amplifier connected with the reference trimming module with a trimming module to be adjusted, and adjusting the trimming module to be adjusted according to the output signal of the sensitive amplifier, so that the total resistance values of each reference circuit and the first trimming module connected with each reference circuit in series are equal, the size of the reading window is increased, the stability of the read data is improved, and the sensitive amplifier in the memory is multiplexed.

A compensation resistor is gated by arranging a compensation circuit switch to be gated in synchronization with the reception of a bit cell, and corresponding resistance compensation is performed on the bit cell which is gated by a total resistance value of a pre-designed compensation resistor array structure, and compensation resistor traces are sequentially connected in series into two metal wires.

The application relates to the technical field of electrochemical sensors, in particular to a coding resistance unit and a biosensor, which comprises: carbon lines and silver lines which are mutually superimposed, and the silver lines divide the carbon lines into two regions; further comprising a laser-engraved pattern which is completely within the range of the carbon lines, the laser-engraved pattern is divided into two parts by the silver lines and corresponds to the two regions of the carbon lines respectively; resistance units corresponding to gears are compiled according to the length and width of the laser-engraved pattern in each region of the carbon lines, the shape of each resistance unit changes with the change of the length and width of the laser-engraved pattern; the resistance units in the same region are connected in series with each other, and the resistance units in different regions are connected in parallel with each other; the resistance values of the resistance units are calculated and summed to obtain a total resistance, and a corresponding coding value is generated based on the total resistance. The application has the effect of generating and identifying the coding identity of as many biosensors as possible through a simple structure.

This application discloses a layout structure, chip, and electronic device for a resistor string, belonging to the field of circuit technology. In the chip including the resistor string, multiple resistors are arranged in an N-row, M-column array; the multiple resistors are connected in series along two diagonals parallel to the N-row, M-column array, where N and M are both positive integers. This allows process offsets generated along different directions, such as rows or columns, to cancel each other out, thereby minimizing the total resistance value offset of the resistor string caused by process offsets and improving the performance of the resistor device.

The utility model discloses an AC / DC combined load box for detecting an electric power test power supply, which comprises at least one first series branch, at least one second series branch and at least one current sensing device, and is characterized in that the first series branch is formed by connecting at least two parts with the total resistance value of 100 ohms in series; the first series branch is formed by connecting at least two parts with the total resistance value of 10 ohms in series, the second series branch is formed by connecting at least two parts with the total resistance value of 10 ohms in series, each part of the first series branch and the second series branch is composed of a fixed resistor, and one end of the current sensing device is connected to the initial end or the tail end of the first series branch. The load box is configured in a manner that the resistance values of the load box for the power test can be combined to be 220 omega, 110 omega, 55 omega, 20 omega, 10 omega and 5 omega. The load box provided by the utility model does not need complex technical operation, improves the test convenience and efficiency, effectively reduces the production cost, can provide more stable and reliable load conditions in the electric power test process, and is helpful for improving the test accuracy.

This invention relates to a method for analyzing the resistance components of a waterjet-propelled ship model. First, a resistance test is conducted on the bare hull. Next, a self-propelled test is performed to determine the rotational speed of the waterjet propulsion device at a given self-propelled point. Then, an L-shaped nozzle is installed, and the waterjet propulsion device operates at the self-propelled point rotational speed at a specific speed, measuring the total hull resistance. Simultaneously, the flow field in the flow region is measured using PIV technology, and the inlet longitudinal momentum is calculated. Finally, the total resistance is subtracted from the bare hull resistance and the inlet longitudinal momentum to obtain the impact of the propeller operation on the hull resistance at the corresponding self-propelled point. This invention employs conventional resistance tests, L-shaped nozzle resistance tests, self-propelled tests, and flow field measurements in the flow region to decompose the resistance into the hull's own resistance components and the hull resistance increment caused by the suction effect of the waterjet propulsion device. This allows for the identification of the propeller's impact on the hull, reducing hull shape optimization to a single objective function optimization problem and improving hull shape optimization efficiency.

The method and the device for measuring the contact resistance of the pole pieces are provided, the pole pieces comprise a positive pole piece and a negative pole piece, in the thickness direction of the pole pieces, the positive pole piece comprises a positive active material, a positive current collector and a positive active material which are arranged in sequence, and the negative pole piece comprises a negative active material which is arranged in sequence. The method comprises the following steps: acquiring the total resistance between the positive pole piece and the negative pole piece; obtaining internal resistance; obtaining the contact resistance of the pole piece according to the total resistance and the internal resistance; and adjusting the temperature and humidity of the space where the positive pole piece and the negative pole piece are located, so as to obtain the pole piece contact resistance of the pole pieces at different temperatures and humidity.

The application relates to a superconducting cable overlap length determination method and device, a superconducting cable, a computer device, a computer readable storage medium and a computer program product, which comprises the following steps: obtaining branch resistances of each superconducting ribbon in a superconducting cable; obtaining a current sharing resistance according to the branch resistances of each superconducting ribbon and a preset overlap resistance; and obtaining target overlap lengths of each superconducting ribbon according to the current sharing resistance and the branch resistances of each superconducting ribbon. The preset overlap resistance represents the welding resistance of the superconducting ribbon and a welding piece, and the target overlap length represents the welding length of each superconducting ribbon and the welding piece. The superconducting ribbon and the welding piece in the superconducting cable can be overlapped based on the obtained overlap length, so that the total resistances of each superconducting ribbon are basically the same, and the currents of each superconducting ribbon in the superconducting cable are basically the same. The phenomenon that the superconducting ribbon in the superconducting cable loses superconductivity due to uneven resistance is reduced, and the operation reliability of the superconducting cable is improved.

The application discloses a kind of unmanned ship cluster design methods of convergence, comprising the following steps: step 1, with the purpose of reducing total resistance and improving seakeeping when unmanned ship cluster is navigated in formation combination mode, design ship type;Step 2, design the connecting device of unmanned ship cluster;Step 3, design parallel type modular ship micro-grid;Step 4, design multi-boat power system and dynamics model;Step 5, design the overall tracking control strategy of unmanned ship cluster.The application proposes new type splicing drag reduction ship type, hull power integrated connecting device and other key innovations, and demonstrates and verifies the functions such as autonomous splicing, water patrol, target trapping of unmanned ship cluster through ship model test.

Device (106) for controlling the voltage-dependent resistance, comprising: at least two electrodes (202, 204) at closely spaced endpoints; a first layer (210) applied to the at least two electrodes (202, 204), wherein the first layer consists of a metal oxide; a second layer (208) applied to the first layer (210), wherein the second layer (208) consists of an electrically conductive metal oxide; a forming contact (206) applied to the second layer (208), wherein a combination of the forming contact (206), the first layer (210) and the second layer (208) functionally connects the at least two electrodes (202, 204) to each other; and a computer system functionally connected to the educational contact, wherein the computer system (102) is designed to apply a predetermined voltage to the first layer (210) and to the second layer (208) respectively, and to display an increase in the total resistance using a user interface.

The application discloses a charging circuit and a control method thereof, an air conditioner and a computer readable storage medium. The control method comprises the following steps: establishing a relationship curve between the resistance value of a thermistor in the charging circuit and the temperature; obtaining the resistance value of the thermistor at the current outdoor temperature according to the relationship curve; calculating the charging time of the equipment to be charged at the outdoor temperature to reach the preset electric quantity according to the resistance value of the thermistor and the electric parameters of the charging circuit; and adjusting the total resistance value of the charging circuit according to the comparison relationship between the outdoor temperature and the preset temperature, the charging time and the preset charging time. The scheme provided by the application comprehensively considers the comparison relationship between the current outdoor temperature and the judgment temperature of the low-temperature working condition, the actual charging time of the equipment to be charged and the preset charging time set by the program, adjusts the total resistance value of the charging circuit when the resistance value change of the thermistor affects the reliability of charging, and solves the influence of the resistance value change of the thermistor on the charging reliability under the low-temperature working condition.

This invention relates to a method for generating a chart indicating the driving resistance of a vehicle under arbitrary load, comprising the following steps: S1: Derivation of the formula for the total resistance of the vehicle; S2: Determining whether the vehicle under test has undergone a secondary coasting test. If no secondary coasting test is performed, proceed to step S3.1; otherwise, proceed to step S4.1; S3.1: Assuming the vehicle under test is fully loaded, generating the theoretical resistance and speed during coasting. F - V Curve graph; S3.2: Derive the theoretical resistance calculation formula within different speed ranges; S3.3: Calculate the absolute value of the error after forming the curve error of the theoretical resistance; S3.4: Generate the error guidance table under different deviations: Table 1; S3.5: Conduct actual coasting tests. This invention has higher calculation accuracy and makes up for the limitations of low efficiency and flexibility in measuring driving resistance by coasting tests.

The utility model discloses a high-precision adjustable resistor. The high-precision adjustable resistor comprises a plurality of value selection resistor modules which are connected in series, a plurality of resistors are arranged between the input end and the output end of each value selection resistor module in a series connection or parallel connection mode, and the resistance value of the value selection resistor module can be switched and adjusted between zero and the maximum resistance value in a grading mode through switching selection of the selection switch. The resistance value adjusting ranges of the value selection resistor modules are set in a grading manner, so that the total resistance value of the resistor can be accurately adjusted after the value selection of the value selection resistor modules is respectively switched. According to the high-precision adjustable resistor disclosed by the utility model, higher-precision and quicker resistance adjustment is realized, so that the production efficiency is greatly improved.

The application provides a test voltage compensation method, device and medium for a test machine, wherein the test voltage compensation method of the voltage test machine comprises the following steps: performing initial testing on a target device to be tested based on an initial test voltage, so as to obtain the total resistance of the corresponding test circuit of the target device to be tested; determining a third test channel; connecting the first test channel, the second test channel and the third test channel based on two-to-two short circuit to form a corresponding channel group; obtaining the resistance of each channel group in parallel to form a resistance equation group, so as to calculate the resistance of the first test channel and the resistance of the second test channel; and calculating the target voltage after compensation of the initial test voltage based on the total resistance of the corresponding test circuit of the target device to be tested and the resistance of the first test channel and the resistance of the second test channel. The application can apply more accurate voltage to the device to be tested, and improve the accuracy of the test result.

A semiconductor structure having a resistive element includes a substrate having an active region, a first gate structure formed over the active region, and a first resistive element formed over the active region and adjacent to the first gate structure. In some embodiments, the first resistive element includes a first resistive layer and a second resistive layer formed over the first resistive layer. In some examples, a total resistance of the first resistive element is a combination of resistances of the first and second resistive layers.

ELECTRONIC DEVICE AND ELECTRONIC MODULE The invention relates to an electronic device comprising: a component having a resistance (R120) with a negative temperature coefficient, and a temperature control means having an electrical resistance (R130) varying according to the temperature T such that the sum of the total resistance (R) is, over a second temperature sub-range (302), greater than a setpoint temperature (305), strictly greater than the total resistance (R) at the setpoint temperature (305). Figure for the abstract: Fig 3.

The invention provides a power tube contact resistance measurement method and system and a calibration method based on contact resistance, and the measurement method comprises the steps: obtaining at least two groups of working parameters of a power tube in a linear region through a measurement device carrying a probe, the at least two groups of working parameters comprise a total resistance value and a drain-source current under different gate voltages and a constant drain voltage; based on the electrical parameters related to the on-resistance and the relationship among the electrical parameters, constructing an equation set by using the total resistance value and the drain-source current under the first gate voltage and the total resistance value and the drain-source current under the second gate voltage so as to determine the on-resistance under the first gate voltage and / or the on-resistance under the second gate voltage; and determining the resistance value of the contact resistor according to the total resistance value and the resistance value of the on-resistor under the first gate voltage or the total resistance value and the resistance value of the on-resistor under the second gate voltage. According to the invention, the size of the contact resistance can be accurately obtained, so that various electrical parameters of the power tube in a linear region can be calibrated.

The present disclosure provides methods and a non-transitory computer readable media for resistance and capacitance (RC) extraction. The method comprises: receiving an electronic layout; selecting a two-dimensional (2D) conductive element from the electronic layout, wherein an aspect ratio of the 2D conductive element is lower than a predetermined threshold; partitioning the 2D conductive element into a plurality of polygons; determining a parasitic capacitance value for each polygon; determining multiple parasitic resistance values for each polygon; determining a total capacitance value of the 2D conductive element based on the parasitic capacitance value for each polygon; and determining a total resistance value of the 2D conductive element based on the multiple parasitic resistance values for each polygon.

The embodiment of the invention provides a resistance characteristic test method for a nuclear power large indirect air cooling tower. The method comprises the following steps: determining a geometric scale of an air cooling tower model according to the height of the air cooling tower model and the height of an air cooling tower prototype; wherein the geometric scale is used for determining parameters of all parts in the air cooling tower model, and the parameters of the parts comprise the section diameter of the tower bottom in the air cooling tower model; according to the section diameter, the section air speed and the section air volume of the tower bottom are determined; determining the total resistance of the air cooling tower model according to the section wind speed; determining the model of a fan in the air cooling tower model according to the section air volume and the total resistance; wherein when the fan is started, test conditions conforming to the section air volume and the total resistance can be provided for the air cooling tower model, so that a test result of the air cooling tower model is obtained. The method is used for testing the resistance characteristic of the air cooling tower in a limited space, so that the accurate resistance characteristic of the air cooling tower is obtained.

The application discloses a kind of monitoring device and method of source region doping of trench MOS, design two identical components in first layer, there is a difference in two components, the difference is that the connection relationship of source region and contact hole, so that the total resistance R1 of one component is obtained by the first diffusion resistance of its source region and the second diffusion resistance of its body region in parallel, also so that the total resistance R2 of second component is equal to the second diffusion resistance of its body region, by preset algorithm, total resistance R1 and total resistance R2 are calculated, to obtain the calculated value, and the calculated value is compared with the design value, to quickly obtain the deviation of monitoring source region doping of trench MOS, without destructive dissection test to chip.

A kind of band gap measurement method and device, to be measured semiconductor sample is fixed with temperature sensor thermal coupling, resistance measurement probe is connected to general measurement interface, identify probe type and load matching measurement protocol and correction algorithm, apply constant current excitation, establish constant current voltage, temperature acquisition link, real-time acquisition voltage and conversion resistance, temperature data are synchronously collected, calculate temperature change rate and resistance fluctuation variance, determine measurement scene state and switch sampling period, adjust heating link to realize temperature closed-loop control, complete full-temperature zone scanning adaptation.In target temperature interval, at least two groups of different effective length total resistance are measured to obtain intrinsic resistance, obtain temperature intrinsic resistance value pair, slice is carried out to the synchronous acquisition of multiple physical quantity parameters, environmental error correction is carried out, linear relationship is constructed based on the corrected data, band gap is calculated based on the slope and output measurement report, which provides an efficient and reliable technical solution for the accurate measurement of semiconductor material band gap.