电感器

The main products: audio, transformers, sub-silencers, inductors, and so on.

主要产品：音响，变压器，分音器，电感等。

A line trap is designed to suppress its zero-line harmonics,which consists of a capacitor and an inductance in parallel,as well as a protective circuit of a small resistor and a bilateral thyristor is added.

阻波器由电容和电感并联，外加由小电阻和双向晶闸管构成的保护电路。

Circulating current through a resonant tank circuit and inverter switches is reduced by feeding high frequency current back through a line inductor.

通过经过一个线路电感线圈将高频电流反馈，可以降低经过一个谐振储能电路和变换器开关的循环电流。

This thesis describes the preparation of HTS rf SQUID, the design of the readout andthe innovation of our inductively coupled tank circuit. Using this tank circuit and ourreadout, we achieved the flux white noise of 15 〓/√Hz for an HTS YBCO rf SQUIDwith the loop size of 100×100 μ〓, and a field sensitivity of 24fT/√Hz by using a 1 inchwasher flux focusor.

文中描述了rfSQUID样品制备过程和我们所研制的rfSQUID读出电路的设计思想和实现方法，给出了我们所发明的电感耦合谐振回路的特性，对于内孔为100x100 μ〓的rf SQUID样品，用这种谐振回路和我们的读出电路，白噪声可测到15μ〓/√Hz左右，用1英寸的聚焦器可获得24fT／√Hz的磁场灵敏度。

Soft switching can improve the converters efficiency and reduce EMI. In comparison of some methods of approaching soft switching, this thesis presents a Diode Auxiliary Resonant Commutating Network which is composed by an auxiliary bridge and a resonant commutating inductor. This topology not only well realizes zero voltage switching, but also overcomes the parasitic oscillation in the secondary side Diodes. Simultaneously, this topology makes both the secondary side diodes and auxiliary diodes operate on the soft switching state too, which reduces more switching losses and provides requirement for the system to run stably under the condition of self-cooled.

软开关能够提高变换器的效率和降低EMI，通过比较目前多种实现软开关技术方案，本文研究了一种由辅助桥臂和谐振电感组成的二极管辅助谐振换流网络，不但很好地实现了ZVS，并且克服了副边二极管上寄生振荡；同时，该拓扑也使副边二极管和辅助二极管都工作于软开关状态，进一步降低了开关损耗，为系统能够在自冷的条件下稳定运行创造了条件。

Chromium ore samples were fused by alkali and then leached out by hydrochloric acid. After the analytical lines of the elements were selected, the conditions of sample uptake, carrier gas flow, cooling gas flow and RF power were optimized with the system of SeaSpray nebulizer and cyclone spray chamber, based on the principle of best signal stability. The determination of chromium, aluminum, iron, magnesium and silicon in chromium ores was fulfilled.

铬矿石样品经碱熔融和盐酸浸取后，选用SeaSpray雾化器和旋流雾室，选定了待测元素的分析线，以信号的稳定性为原则，优化了样品提升量、载气流量、冷却气流量和入射功率，实现了电感耦合等离子体原子发射光谱法对铬矿石中铬、铝、铁、镁和硅等主量成分的测定。

It is concluded that the ~(176)Hf/~(177)Hf ratios of 91500, Temora and We-1 were homogeneous, because the aforementioned Hf isotopic results consist of at least seven separated performances of aliquots for each zircon sample. These results have significant implications for zircon Hf isotopic determination by using LA-MC-ICPMS.

上述每个结果包括至少7组独立的锆石样晶的溶解、分离和测定，表明标准样91500、Temora和We-1是Hf同位素组成均一的，可作为LAM-MC-ICPMS(激光剥蚀多接受器电感耦合等离子体质谱)的原位微区锆石~(176)Hf／~(177)Hf比值分析过程中外部校正及监控标准样。

This paper attempts to associate PFC technology with Quasi-Resonant DC/DC Converter and Synchronous Rectifier technology, to work out a novel switching power supply with higher efficiency and low contamination, which both achieved high power factor, improved effecting on electrical network and ensured high efficiency, furthermore, it is easy to be realized and controlled in circuit.

本文首先阐述了开关电源、功率因数校正技术和同步整流技术的发展及现状，对DC/DC变换的拓扑结构进行了选择，确定了带有隔离的准谐振(Quasi-Resonant)反激型电路，可以有效地降低损耗；接着本文对几种常见的PFC拓扑电路进行分析对比，从中选择了BOOST型电路，对工作在临界状况下的电路进行了分析，采用跟随输入电压的升压变换新技术，减小了电感体积，同时降低了开关管的电压应力，既简单又有效地实现了功率因数校正，并发现此技术值得推广；由于反激型变换器的效率一般都较低，所以本文在传统同步整流技术基础上对其加以改进，设计出一种新颖、高效的同步整流方案。

The sampling of the inductor current is synchronized with the PWM signal in synchronous buck converter for both turn-on and turn-off.

在降压转换器中，开关切换时电感电流的取样讯号将会与脉宽调变(pulse width modulation， PWM)讯号同步。

Most of the time, until now, only one parameter was considered for designing crossover network inductors and that is d.c. winding resistance.

至今大多数的时间，设计分音器电感时唯一考虑到的参数只有线圈的DC电阻。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。