本文通过改进样品室、增加液氮冷却系统,对传统热激电流测量装置进行了完善,使其能对样品进行更详细地分析。
In the paper, a traditional setting of measuring TSC is improved by ameliorating sample room and assembling liquid nitrogen cooled system, which can analyze exactly sample in detail.
在极低的温度下,它发生量子:它存在于一个振荡波形中,波形可能呈现激发态、未激态、或两者同时兼具,这都取决于电流的控制。
At extremely cold temperatures, it goes quantum: it exists in an oscillating waveform spanning an excited state, an unexcited state, or both simultaneously, all controlled by electrical currents.
光伏电池通常对光谱中的可见光和紫外线波段的光子受激性最好,但高频红外光子也能激发电流。
Photovoltaic cells are usually most responsive to photons in the visible and ultraviolet parts of the spectrum, but they can also respond to high-frequency infrared photons.
电感电流断续工作的反激式变换器一次侧开关可工作于硬开关或准谐振(或谷值开关或零电压开关)模式。
The flyback converter running in discontinuous conduction mode can be operated in hard switching or quasi resonant (or valley switching, or ZVS) mode regarding the primary side switch.
该变换器电路结构上采用正激一零电流准谐振软开关电路拓扑结构,并结合了有源钳位技术;
This module uses a circuit topology of forward pulse width modulated - zero current quasi - resonance soft - switching , combined with active clamp technology.
提出了一种新型的双重单端正激式弧焊逆变电源,采用IGBT为开关器件,引入了电流型脉宽调制控制器。
A new double single-ended forward arc welding power inverter with IGBT as power device and current PWM controller is introduced in this paper.
提出一种具有零电流关断(ZCS)的反激式单级功率因数校正(PFC)变换器。
A flyback converter with zero current switching (ZCS) resonant and power factor correct (PFC) is proposed.
主电路采用双管双正激拓扑结构,采用了逐脉冲电流比较控制技术和软开关技术。
The main circuit USES the double barrel pair to stir up the topology, and USES the pulse electric current comparison control technology and soft switch technology.
文章研究了采用不同的正激、反激变压器匝比对传输功率的分配比例、电流纹波等影响,并进行了试验验证。
The influence on the power transfer and the current ripple with different turns ratio was researched. The experimental results verified the analysis.
但如果设计反激有源箝位电路工作在电流连续模式,控制占空比,使输入电流跟随输入电压,可以提高输入功率因数。
However if the active clamp flyback converter is designed to operate in CCM, and the duty cycle is controlled to make the input current track input voltage, the input power factor can be improved.
第四章围绕着电流型反激式开关电源的设计和实现进行了研究。
The fourth chapter carries out the research on the design and realization of the current-mode flyback switching supply.
设计了一种以电流型PWM控制器UC3842芯片为核心的高频单端反激式开关稳压电源。
A high frequency single-ended flyback switching power supply is designed with current-mode PWM controller UC3842 chip as its core.
时间城激电对电位差的相对精度要求不高,但供电电流大,装备笨重。变频法对电位差的相对精度提出了很高的要求,在极化率低时,难于达到。
The time domain IP does not require very high relative precision of potential difference, but the supply current is large and the equipment is cumbersome.
研究了一种高频链反激逆变器拓扑及其工作在电感电流连续模式下的控制方案。
A novel high frequency link flyback inverter which works in the continuous conduction mode (CCM) is presented.
讨论了施加的电流、激振频率对非线性模型参数的影响。
A nonlinear hysteretic bi-viscous model to describe the performance of the MR damper is suggested.
无论对声传播还是声激振动,电流变材料的影响都是随频率变化而变化的。
The ERF has no obvious effects on sound insolating in moderate or high frequencies, but has apparent effect on th…
无论对声传播还是声激振动,电流变材料的影响都是随频率变化而变化的。
The ERF has no obvious effects on sound insolating in moderate or high frequencies, but has apparent effect on th…
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