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Three Dimensional Electric Circuits with Multiple Capacitors and Resistors
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作者 Haiduke Sarafian 《American Journal of Computational Mathematics》 2023年第3期379-386,共8页
Two cubical 3D electric circuits with single and double capacitors and twelve ohmic resistors are considered. The resistors are the sides of the cube. The circuit is fed with a single internal emf. The charge on the c... Two cubical 3D electric circuits with single and double capacitors and twelve ohmic resistors are considered. The resistors are the sides of the cube. The circuit is fed with a single internal emf. The charge on the capacitor(s) and the current distributions of all twelve sides of the circuit(s) vs. time are evaluated. The analysis requires solving twelve differential-algebraic intertwined symbolic equations. This is accomplished by applying a Computer Algebra System (CAS), specifically Mathematica. The needed codes are included. For a set of values assigned to the elements, the numeric results are depicted. 展开更多
关键词 3D Electric Circuits Capacitors Multiple resistors Differential-Algebraic Equations Computer Algebra System MATHEMATICA
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Analysis of Quenching Resistor Effect to Improve Stability of TIA Circuit for APD-A Secondary Publication
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作者 Dong-Han Ki Yu-Rin Jin +1 位作者 Sung-Mi Kim Seong-Ik Cho 《Journal of Electronic Research and Application》 2024年第2期54-61,共8页
In this paper,since the Avalanche Photo Diode(APD)for Light-to-Voltage LTV conversion uses a high voltage in the operating range unlike other Photo Diodes(PD),the quenching resistor must be connected in series to prev... In this paper,since the Avalanche Photo Diode(APD)for Light-to-Voltage LTV conversion uses a high voltage in the operating range unlike other Photo Diodes(PD),the quenching resistor must be connected in series to prevent overcurrent when using the Transimpedance Amplifier(TIA).In such a case,quenching resistance may affect the transfer function of the TIA circuit,resulting in serious stability.Therefore,in this paper,by analyzing the effect of APD quenching resistance on the voltage and current loop transfer function of TIA,we proposed a loop analysis and a method for determining the quenching resistance value to improve stability.A TIA circuit with quenching resistance was designed by the proposed method and its operational stability was verified through simulation and chip fabrication. 展开更多
关键词 APD TIA Quenching resistor STABILITY Transfer function
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A wideband metamaterial absorber based on a magnetic resonator loaded with lumped resistors 被引量:5
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作者 程用志 龚荣洲 +1 位作者 聂彦 王鲜 《Chinese Physics B》 SCIE EI CAS CSCD 2012年第12期451-456,共6页
A wideband metamaterial absorber (MA) based on a magnetic resonator loaded with lumped resistors is presented. It is composed of a one-dimensional periodic array of double U-shaped structured magnetic resonators loa... A wideband metamaterial absorber (MA) based on a magnetic resonator loaded with lumped resistors is presented. It is composed of a one-dimensional periodic array of double U-shaped structured magnetic resonators loaded with lumped resistors, a dielectric substrate, and a metal plate. We simulated, fabricated, measured, and analyzed the MA. The experimental results show that the reflectance (S11) is below -10 dB at normal incidence in the frequency range of 7.7 GHz 18 GHz, and the peak value is about -20 dB. Simulated power loss density distributions indicate that wideband absorption of the MA is mainly attributable to the lumped resistors in the magnetic resonator. Further investigations indicate that the distance between two unit cells along the magnetic field direction significantly influences the performance of the MA. 展开更多
关键词 WIDEBAND metamaterial absorber lumped resistors
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Failure Behaviors and Mechanisms of High-Ohmic Resistors Protected by PF/EP Paint in Heat and Humid Environment 被引量:1
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作者 Wang Xiuyu Cheng Qiang +5 位作者 Ma Xiaopin Zhang Hao Li Mingxiu Chen Tongning Zhang Ping Li Zhixun 《Transactions of Tianjin University》 EI CAS 2016年第5期388-395,共8页
Phenolic formaldehyde(PF)and epoxy(EP)resins are commonly used in electronic packaging. In this paper, high-ohmic resistors(2.2 M?, ±0.5%,)with Cr-Si film were coated by PF/EP paint, and the resulting coated resi... Phenolic formaldehyde(PF)and epoxy(EP)resins are commonly used in electronic packaging. In this paper, high-ohmic resistors(2.2 M?, ±0.5%,)with Cr-Si film were coated by PF/EP paint, and the resulting coated resistors were used for heat and humid(HH)experiments. The experimental results show that the corrosion of bandlike resistive films is selective and isotropic, and that the corrosion spots in resistive films all form along grooves and extend in the same direction. It is revealed that OH^- ions are generated due to the electrochemical reactions of resistive film in HH experiments, so a NaOH aqueous solution with pH about 10 was used to study the effects of absorbed water and OH^- ions on PF/EP polymer film. The results indicates that the color of some part on PF/EP polymer film changes due to corrosion, and that the corrosion part of the polymer film is easy to be peeled off. It can be inferred that OH^- ions generated in HH experiments may play a catalytic role in the chemical reactions between polymer film and the absorbed water, which accelerates the degradation of PF/EP protection film for a resistor. 展开更多
关键词 Cr-Si FILM protection FILM humid ENVIRONMENT polymer degradation resistor failure
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Thin Film Chip Resistors with High Resistance and Low Temperature Coefficient of Resistance 被引量:5
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作者 王秀宇 张之圣 +1 位作者 白天 刘仲娥 《Transactions of Tianjin University》 EI CAS 2010年第5期348-353,共6页
High resistance thin film chip resistors(0603 type) were studied,and the specifications are as follows:1 k? with tolerance about ±0.1% after laser trimming and temperature coefficient of resistance(TCR) less than... High resistance thin film chip resistors(0603 type) were studied,and the specifications are as follows:1 k? with tolerance about ±0.1% after laser trimming and temperature coefficient of resistance(TCR) less than ±15×10-6/℃.Cr-Si-Ta-Al films were prepared with Ar flow rate and sputtering power fixed at 20 standard-state cubic centimeter per minute(sccm) and 100 W,respectively.The experiment shows that the electrical properties of Cr-SiTa-Al deposition films can meet the specification requirements of 0603 ty... 展开更多
关键词 thin film chip resistor high resistance low temperature coefficient of resistance alloy target magnetic sputtering Cr-Si-Ta-Al film
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Interaction of RuO<sub>2</sub>and Lead-Silicate Glass in Thick-Film Resistors 被引量:3
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作者 Gulmurza Abdurakhmanov Gulbahor S. Vakhidova Lutfullo X. Tursunov 《World Journal of Condensed Matter Physics》 2011年第1期1-5,共5页
Results of investigation of X-ray diffraction, infrared and optical spectra of powders of the ruthenium dioxide, lead-silicate glass as well as their mixture before and after sintering are reported. Sintering conditio... Results of investigation of X-ray diffraction, infrared and optical spectra of powders of the ruthenium dioxide, lead-silicate glass as well as their mixture before and after sintering are reported. Sintering conditions typical for thick film resistors were used. Intensity of main lines of RuO2 in X-ray diffraction patterns of sintered mixtures decreases and they slightly shift towards small angles. No new reflexes appear in these patterns. Absorbance of RuO2 in the range of 2.5-100 μm is proportional to and featureless. Infrared spectrum of lead-silicate glass has absorption bands of [SiO4]4- tetrahedra and Pb-O bonds only. Optical spectrum of RuO2 has wide absorption bands at 950 and 370 nm. Spectra of the mixture of RuO2 and glass powders before and after sintering are different indicating that there is interaction between them during the sintering process. Concentration of free charge carriers estimated from the optical spectra is about 1021 cm-3. 展开更多
关键词 Ruthenium Dioxide Lead-Silicate Glass Thick Film resistors Infra Red And Optical Spectra X-Ray Diffraction
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Fabrication of integrated resistors in printed circuit boards 被引量:1
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作者 王守国 陈清远 《Journal of Central South University》 SCIE EI CAS 2011年第3期739-743,共5页
In order to utilize integrated passive technology in printed circuit boards (PCBs), manufacturing processing for integrated resistors by lamination method was investigated. Integrated resistors fabricated from Ohmeg... In order to utilize integrated passive technology in printed circuit boards (PCBs), manufacturing processing for integrated resistors by lamination method was investigated. Integrated resistors fabricated from Ohmega technologies in the experiment were 1 408 pieces per panel with four different patterns A, B, C and D and four resistance values of 25, 50, 75 and 100 fL Six panel per batch and four batches were performed totally. The testing was done for 960 pieces of integrated resistors randomly selected with the same size. The value distribution ranges and the relative standard deviation (RSD) show that the scatter degree of the resistance decreases with the resistor size increasing and/or with the resistance increasing. Patterns D with resistance of 75 and 100% for four patterns have the resistance value variances less than 10%. Patterns C and D with resistance of 100 Ω have the manufacturing tolerance less than 10%. The process capabilities are from about 0.6 to 1.6 for the designed testing patterns, which shows that the integrated resistors fabricated have the potential to be used in multilayer PCBs in the future. 展开更多
关键词 integrated resistors lamination method printed circuit boards integrated passive technology
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Negative-Resistance Characteristics Analysis of Poly-Silicon Resistors Formed on the Flow Sensor
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作者 DianzhongWen 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2006年第A03期490-491,共2页
In this paper we put forward a new concept about effective trapping center concentration N^e_T which is decreasing with the trapped charge Q corresponding to index movement,based on that,we discuss theⅠ-Ⅴand tempera... In this paper we put forward a new concept about effective trapping center concentration N^e_T which is decreasing with the trapped charge Q corresponding to index movement,based on that,we discuss theⅠ-Ⅴand temperature characteristics of polysilicon resistors.The new concept presents ideal theoretical interpretion for the originally observed current-voltage negative-resistance characteristics of polysilicon resistors formed on the flow sensor,and also for poly-silicon film resistors. The final results agree well with the theoretical current-voltage characteristics. 展开更多
关键词 poly-silicon resistor trapping center negative-resistance grain boundary
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Current dependence coefficient determination for different DC standard resistors measurements based on Ⅴ-Ⅰ method
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作者 Rasha S M Ali M Helmy A Raouf 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2016年第4期332-335,共4页
Current dependence and stability of the measured resistance value are very important for the accurate measurement of DC standard resistor. In this paper, the volt-ampere (V-I) measurement method has been applied ... Current dependence and stability of the measured resistance value are very important for the accurate measurement of DC standard resistor. In this paper, the volt-ampere (V-I) measurement method has been applied to study the current depend-ence of four different types of standard resistors. Diverse values are obtained through the investigation of their stability at dif-ferent currents. Therefore, the current dependence coefficient (CDC) can be determined for each one of the studied resistors. Research shows CDC depends on the applied current value, the measurement time and the resistor type, as clearly demonstra-ted in this research. 展开更多
关键词 current dependence coefficient standard resistors volt-ampere method resistor stability
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On the Conduction Mechanism of Silicate Glass Doped by Oxide Compounds of Ruthenium (Thick Film Resistors)
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作者 Gulmurza Abdurakhmanov 《World Journal of Condensed Matter Physics》 2011年第2期19-23,共5页
The results of the investigation of conduction mechanism of silicate glass doped by oxide compounds of ruthenium (thick film resistor) are reported. The formation of diffusion zones in the softened glass during firing... The results of the investigation of conduction mechanism of silicate glass doped by oxide compounds of ruthenium (thick film resistor) are reported. The formation of diffusion zones in the softened glass during firing process of the mixture of the glass and the dopant powders is considered. As the result the doping glass becomes conductive. These diffusion zones have higher conductivity and act as percolation levels for the free charge carriers. The effect of tem-perature and duration of firing process on the conductivity of doped glass is considered. Experimental results are in a good agreement with the model. 展开更多
关键词 Lead-Silicate Glass Thick Film resistors PERCOLATION Levels Doping Conductivity FIRING Conditions
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On the Conduction Mechanism of Silicate Glass Doped by Oxide Compounds of Ruthenium (Thick Film Resistors). 3. The Minimum of Temperature Dependence of Resistivity
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作者 Gulmurza Abdurakhmanov 《World Journal of Condensed Matter Physics》 2014年第3期166-178,共13页
This article is the final part of the investigation of conduction mechanism of silicate glass doped by oxide compounds of ruthenium (thick film resistors). In the first part [1], the formation of percolation levels du... This article is the final part of the investigation of conduction mechanism of silicate glass doped by oxide compounds of ruthenium (thick film resistors). In the first part [1], the formation of percolation levels due to diffusion of dopant atoms into the glass has been considered. The diffusion mechanism allowed us to explain shifting of the percolation threshold towards to lower value and the effect of firing conditions as well as the components composition on the electrical conduction of the doped glass. The coexistence of thermal activation and localization of free charge carriers as the result of nanocrystalline structure of the glass was the subject of the second part [2]. Because of it, the resistivity of the doped silicate glass is proportional to exp (–aT–ζ) at low temperatures (T 50 K), 0.4 ζ < 0.8. Structural transitions of nanocrystals take place at high temperatures (T > 800 K) and the conductivity of the doped silicate glass decreases sharply. We consider the origin of the minimum in the temperature dependence of resistivity of the doped silicate glass here. It is shown that the minimum arises from merge of impurity band into the valence band of glass at temperature high enough, so thermal activation of charge carriers as well as its hopping are failed, and scattering of free charge carriers become predominant factor in the temperature dependence of the resistivity. 展开更多
关键词 Lead-Silicate Glass Thick Film resistors Minimum of RESISTIVITY Doping Energy Bands Conductivity Thermal Activation HOPPING
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3D_Multi Resistor Electric Circuit
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作者 Haiduke Sarafian 《American Journal of Computational Mathematics》 2023年第2期342-349,共8页
This report addresses the issues concerning the analysis of an electric circuit composed of multiple resistors configured in a 3-Dimension structure. Noting, all the standard textbooks of physics and engineering irres... This report addresses the issues concerning the analysis of an electric circuit composed of multiple resistors configured in a 3-Dimension structure. Noting, all the standard textbooks of physics and engineering irrespective of the used components are circuits assembled in two dimensions. Here, by deviating from the “norm” we consider a case where the resistors are arranged in a 3D structure;e.g., a cube. Although, independent of the dimension of the design the same physics principles apply, transitioning from a 2D to a 3D makes the corresponding analysis considerably challenging. In general, with no exception, depending on the used components the analysis faces with solving a set of either algebraic or differential-algebraic equations. Practically, this interfaces with a Computer Algebra System (CAS). The main objective is symbolically to identify the current distributions and the equivalent resistor (s) of cubically assembled resistors. 展开更多
关键词 3D Electric Circuit Equivalent resistor Computer Algebra System MATHEMATICA
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Energy model based sensorless estimation method for operational temperature of braking resistor onboard metro vehicles
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作者 Leiting Zhao Kan Liu +1 位作者 Donghui Liu Zheming Jin 《Railway Sciences》 2023年第4期470-485,共16页
Purpose–This study aims to improve the availability of regenerative braking for urban metro vehicles by introducing a sensorless operational temperature estimation method for the braking resistor(BR)onboard the vehic... Purpose–This study aims to improve the availability of regenerative braking for urban metro vehicles by introducing a sensorless operational temperature estimation method for the braking resistor(BR)onboard the vehicle,which overcomes the vulnerability of having conventional temperature sensor.Design/methodology/approach–In this study,the energy model based sensorless estimation method is developed.By analyzing the structure and the convection dissipation process of the BR onboard the vehicle,the energy-based operational temperature model of the BR and its cooling domain is established.By adopting Newton’s law of cooling and the law of conservation of energy,the energy and temperature dynamic of the BR can be stated.To minimize the use of all kinds of sensors(including both thermal and electrical),a novel regenerative braking power calculation method is proposed,which involves only the voltage of DC traction network and the duty cycle of the chopping circuit;both of them are available for the traction control unit(TCU)of the vehicle.By utilizing a real-time iterative calculation and updating the parameter of the energy model,the operational temperature of the BR can be obtained and monitored in a sensorless manner.Findings–In this study,a sensorless estimation/monitoring method of the operational temperature of BR is proposed.The results show that it is possible to utilize the existing electrical sensors that is mandatory for the traction unit’s operation to estimate the operational temperature of BR,instead of adding dedicated thermal sensors.The results also validate the effectiveness of the proposal is acceptable for the engineering practical.Originality/value–The proposal of this study provides novel concepts for the sensorless operational temperature monitoring of BR onboard rolling stocks.The proposed method only involves quasi-global electrical variable and the internal control signal within the TCU. 展开更多
关键词 Operational temperature monitoring Braking resistor Regenerative braking Energy model Convection dissipation of heat
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旋转部件温度参数同步无线测量技术研究
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作者 庞俊奇 马宏帅 +2 位作者 李谦 张鹏辉 谭秋林 《仪表技术与传感器》 CSCD 北大核心 2024年第8期121-126,共6页
针对旋转部件温度参数原位同步测量和数据无线传输应用需求,研究了电能无线传输技术和空间光通信技术,设计了一套8通道小型温度参数遥测系统。该系统通过热电偶和铂电阻传感器实现8路温度参数的高精度准确测量,采用电磁感应和红外光通... 针对旋转部件温度参数原位同步测量和数据无线传输应用需求,研究了电能无线传输技术和空间光通信技术,设计了一套8通道小型温度参数遥测系统。该系统通过热电偶和铂电阻传感器实现8路温度参数的高精度准确测量,采用电磁感应和红外光通信技术实现电能和采集数据的同步无线传输。系统分析软件完成数据的实时存储、解析和可视化显示。搭建了20000 r/min的模拟旋转环境测试平台,进行系统功能和性能验证。系统温度采集精度优于0.15%,无线传输距离为15 mm,电能传输输出峰值功率可达5 V/400 mA,实测通信速率为10 Mbit/s,8通道同步采样速率为56 kHz。该系统实现了温度参数的分布式、高精度获取,为旋转部件的研制和维护提供了准确的温度依据。 展开更多
关键词 旋转部件 光通信 电磁感应 热电偶 铂电阻
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计及杂散参数的柔性直流启动电阻冲击电压分布特性研究
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作者 周竞宇 张文博 +3 位作者 韩坤 洪波 胡秋玲 黄永瑞 《高压电器》 CAS CSCD 北大核心 2024年第6期156-165,共10页
针对柔性直流输电系统中启动电阻异常放电问题。首先,从启动电阻温升、绝缘水平、电流应力及冲击能量几方面进行校核分析;然后,对现场启动电阻进行拆解,定量分析启动电阻放电原因;最后,利用Ansys搭建电阻器杂散电容求解模型,根据分布电... 针对柔性直流输电系统中启动电阻异常放电问题。首先,从启动电阻温升、绝缘水平、电流应力及冲击能量几方面进行校核分析;然后,对现场启动电阻进行拆解,定量分析启动电阻放电原因;最后,利用Ansys搭建电阻器杂散电容求解模型,根据分布电容求解结果,基于PSCAD搭建电阻塔的宽频等效模型,仿真分析启动电阻在冲击电压下的电位分布规律,验证启动电阻异常放电机理并提出优化改进措施。研究结果可为今后柔性直流输电系统启动电阻的选型设计提供参考。 展开更多
关键词 柔直系统 启动电阻 杂散参数 电位分布 放电分析
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基于MMC的分布式储能系统及其快速SOC均衡控制策略
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作者 马文忠 孙伟 +3 位作者 王玉生 张文艳 李恒硕 朱亚恒 《电力系统保护与控制》 EI CSCD 北大核心 2024年第16期1-11,共11页
提高基于模块化多电平换流器(modular multilevel converter,MMC)的分布式储能系统(distributed energy storage systems,DESS)的能量利用率,解决储能子模块(energy sub-module,ESM)荷电状态(state of charge,SOC)均衡问题至关重要。针... 提高基于模块化多电平换流器(modular multilevel converter,MMC)的分布式储能系统(distributed energy storage systems,DESS)的能量利用率,解决储能子模块(energy sub-module,ESM)荷电状态(state of charge,SOC)均衡问题至关重要。针对现有的SOC均衡控制策略的不足,提出内外分层的快速SOC均衡控制策略。外层针对桥臂间或相间的SOC差异,通过改进MMC模型预测控制(model predictive predictive control,MPC),配合自适应均衡系数,快速调整功率差额。内层引入自适应虚拟电阻法,根据ESM的SOC情况确定主导ESM,自适应调节各单元的虚拟电阻,产生相应的电压梯度,结合MMC排序算法使ESM按照各自SOC进行功率分配,从而实现ESM的SOC快速均衡,提高DESS能量利用率。通过在Matlab/Simulink构建仿真模型,证明了所提控制策略的有效性和可行性。 展开更多
关键词 模块化多电平换流器 分布式储能系统 模型预测控制 荷电状态 虚拟电阻
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一种新型可移动TEM喇叭辐射波模拟器的模拟优化
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作者 朱湘琴 吴伟 蔡利兵 《强激光与粒子束》 CAS CSCD 北大核心 2024年第7期21-28,共8页
为改善基于TEM喇叭的辐射波模拟器的低频辐射特性从而展宽其辐射近场半高宽,首次提出了在指数型TEM喇叭上/下两个极板的端口加上2个金属直板、并通过倾斜金属板和并联电阻相连的新型可移动模拟器的设计方案。基于FDTD方法模拟分析了该... 为改善基于TEM喇叭的辐射波模拟器的低频辐射特性从而展宽其辐射近场半高宽,首次提出了在指数型TEM喇叭上/下两个极板的端口加上2个金属直板、并通过倾斜金属板和并联电阻相连的新型可移动模拟器的设计方案。基于FDTD方法模拟分析了该新型模拟器的特性参数对其近场辐射性能的影响,并给出了优化后的模拟器及其阵列的辐射特性。计算结果表明:尺寸为6 m×6 m×6.24 m的优化后的新型模拟器在距离口面3 m的中心位置的辐射近场脉宽能达到18.95 ns,而达到相同低频辐射性能的常规模拟器尺寸为9 m×12 m×6.8 m。且与常规模拟器相比,优化后的模拟器的场峰值更大。与前人的研究相比,优化后的模拟器场在保持高峰值的同时,时域波形后延震荡的幅度与主峰的比值明显减小。优化后的模拟器2×2阵列模型的测试平面中心点场峰值最大,且在测试平面上满足6 dB均匀性要求的有效测试区最大;有效测试区在横向上范围最大的是2×2阵列模型,其次是2×1阵列模型;在纵向上范围最大的是2×2阵列模型及1×2阵列模型。 展开更多
关键词 优化 TEM喇叭 电磁脉冲 电阻 辐射波模拟器 FDTD
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某电源模块厚膜电阻硫化机理及防护对策
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作者 杨伟 朱辉 +2 位作者 周灿 毛久兵 张润华 《电子工艺技术》 2024年第1期14-17,38,共5页
针对本单位某型电子产品内主板的电源模块上的厚膜电阻首次出现硫化的问题,开展了行业现状调研,研究了厚膜电阻硫化机理,分析了电源模块上厚膜电阻硫化的原因。从器件选型、设计优化、工艺改进三个方面提出了提升电源模块抗硫化能力的... 针对本单位某型电子产品内主板的电源模块上的厚膜电阻首次出现硫化的问题,开展了行业现状调研,研究了厚膜电阻硫化机理,分析了电源模块上厚膜电阻硫化的原因。从器件选型、设计优化、工艺改进三个方面提出了提升电源模块抗硫化能力的防护措施。重点论述了涂覆三防漆的改善措施,且经工艺验证可行,能够起到提升电源模块防硫化能力的作用。 展开更多
关键词 厚膜电阻 硫化 机理 防护
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基于运放的受控源实现方法
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作者 田社平 陈家安 +2 位作者 陈晟浩 刘博文 张峰 《电气电子教学学报》 2024年第3期117-120,共4页
探讨四种受控源模型的实现方法及其应用,并利用Multisim软件验证电路实现结果的正确性。首先利用运放同相放大器实现电压控制电压源,在此基础上给出了负电阻实现电路设计的一种解释方法。利用电压控制电压源和负电阻实现电路,通过电路... 探讨四种受控源模型的实现方法及其应用,并利用Multisim软件验证电路实现结果的正确性。首先利用运放同相放大器实现电压控制电压源,在此基础上给出了负电阻实现电路设计的一种解释方法。利用电压控制电压源和负电阻实现电路,通过电路的等效变换给出了其他三种受控源的实现电路。所讨论的方法为实现一般二端口电路提供了一种设计思路。 展开更多
关键词 受控源 运放 负电阻
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硅压阻式压力敏感芯体应变电阻失效分析 被引量:1
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作者 徐振忠 闫云龙 +3 位作者 尤佳 朱乾龙 马丽娜 吴佐飞 《传感器与微系统》 CSCD 北大核心 2024年第6期38-41,共4页
通过对硅压阻式压力敏感芯体内部应变电阻失效故障的排查及定位分析,确立了应变电阻缺陷造成传感器失效机理,总结激发应变电阻缺陷暴露的检测方法,确定对压力敏感芯体进行1200 h常温电老炼的筛选方案。筛选试验结果表明:增加1200 h常温... 通过对硅压阻式压力敏感芯体内部应变电阻失效故障的排查及定位分析,确立了应变电阻缺陷造成传感器失效机理,总结激发应变电阻缺陷暴露的检测方法,确定对压力敏感芯体进行1200 h常温电老炼的筛选方案。筛选试验结果表明:增加1200 h常温电老炼后,可剔除由于应变电阻缺陷造成敏感芯体输出漂移的失效元件。 展开更多
关键词 硅压阻式 压力敏感芯体 应变电阻 失效机理
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