用气相色谱仪测定变压器油中气体

本文采用多柱自动切换气相色谱仪和真空全脱气装置对变压器和互感器用油中的气体进行了系统的分析，除可测定油中的氢、甲烷、乙炔、乙烯、乙烷、二氧化碳和一氧化碳等气体外，还可根据不同需要测定氮、氧以及Ｃ３和Ｃ４烃的含量。本方法已用于诊断变压器和互感器内部变化及故障。     

分光光度法测定微量炔烃的研究

叙述了利用生成炔亚铜的反应来定量测定微量炔烃的分光光度法。研究表明，在严格控制氨的浓度、保持足量的还原剂的条件下，可以有效地消除反应介质、反应时间、反应物的浓度、空气中的氧等对测定的影响，获得满意的定量结果。该方法已在实际生产中得到应用。     

采用正弦微窗光栅的位移传感器

研制了一种新型的光栅位移传感器,它采用了一种被作者称为正弦微窗光栅的新元件作为指示光栅,用于消除光栅信号中的高次谐波,所为正弦微穿光栅是一种由许多微小的正弦穿孔排列组成的光栅。介绍了采用光学图形发生器和刻蚀镀膜工艺制造这种光栅的方法。并将制成的正弦微穿光栅用于光栅位移传感器的设计。实验表明,新型传感器能够很好地抑制光栅信号中的高次谐波,可将高次谐波总旧降至基波的２％以下。     

单相变压器负载运行外特性的数学分析

通过数学推导,对单相变压器负载分别为电感性,电阻性及电容性三种情况时的外特性作了定量的分析,从而弥补了传统的运用实验验证或用相量图进行定性分析的不足。     

一种重复频率的-功率脉冲发生器

介绍了一种由 Ｔｅｓｌａ 变压器和同轴脉冲形成线组成的高功率、高重复频率的脉冲发生器,其特点是结构紧凑,容易实现小型化。简述了该发生器的结构,论述了基本原理和特性,分析了应用前景。     

金属箔断路开关电爆性能的研究

 给出了在单纯断路开关调节电路(F型)、断路开关－变压器调节电路（FT型）和变压器－断路开关调节电路（TF型）三种类型的电爆炸断路开关的理论模型和数值模拟结果,并对其性能进行对比和分析。     

Graded PZT ceramics for piezoelectric transformers

In the present study two types of the synthesized Pb(Zr_1−xTi_x)O₃ (PZT) powders differing in Zr/Ti ratio were used to prepare the spatially inhomogeneous (i.e., graded) structure. A position-dependent chemical composition was expected to cause the property gradient. Disk-shaped compacts were prepared in a way such that two different orientations of the radial gradients were formed. The solid state sintering under pressure was utilized to prepare ceramics. Simultaneous thermal analysis was used to study thermal behavior of the ceramic powders. Graded PZT ceramics were characterized using X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. It was also characterized in terms of its dielectric properties by both bridge technique and the impedance spectroscopy. On the basis of graded PZT ceramics the disk-shaped radial mode piezoelectric transformer was developed and fabricated.     

重复率Tesla变压器型相对论电子束加速器的初步试验

 研制了一台重复率Tesla型相对论电子束加速器。空心Tesla变压器对充油Blumlein传输线充电;主开关为自击穿油间隙;二极管为平面阴极有箔二极管。试验是在重复率为0.2Hz和1Hz下分别进行。当重复率为0.2Hz时,加速器连续重复放电70次以上。二极管电压幅值300kV,脉宽30ns,上升沿约5ns。     

Study on inverse taper based mode transformer for low loss coupling between silicon wire waveguide and lensed fiber

We have simulated the coupling loss of three types of Inverse Taper and taper-lensed fiber using three dimensional (3D) semi-vectorial beam propagation methods (BPM) respectively. Our results showed that the performances of exponential inverse taper and quadratic inverse taper were better than the commonly used linear inverse taper. Especially, for TM mode the improvement in the reduction of devices size is 53% and 136% for exponential and quadratic inverse taper compared with the linear inverse taper.     

新型喷射-吸收式变热器的研究

本文在分析现有的单级、两级和双效吸收式变热器结构的运行特点的基础上,提出了一种新型结构形式,即喷射-吸收式变热器.文中对喷射-吸收式变热器进行了详细的参数和性能分析.结果表明,其具有结构简单,输出温度较高,且效率也较高的特点.