Two topologies of the inverter based on the flyback converter are presented in this thesis. The inverter recycles the leakage inductance power with the clamped capacitor and cascades the secondary winding with the converter output to achieve the high step-up voltage. With discontinuous conduction mode of the high step-up flyback converter and synchronous and semi-sinusoidal modulation of the main switch, the peak current of the switch and the output peak current of the converter will be semi-sinusoidal. Through the inversion of the full-bridge inverter and the low-pass filtering of the LC filter, the final current fed the grid will be sinusoidal and in phase with the voltage.
本论文提出两种以返驰式转换器为基础之电流源输出直流至直流转换器，其利用箝位电路及变压器二次侧与转换器输出串联方式来达成吸收变压器漏感能量与高电压增益之目的，同时藉由设定一次侧开关电流峰值与市电电压成正比，并利用操作於不连续导通模式下之返驰式转换器输出可形成一电流源且其电流峰值正比於一次侧开关电流峰值之特性，使经由线频切换变流器转换与LC滤波后之输出电流得以形成一低失真之正弦波，达到高功因馈入市电之目的。
Finally, important experimental phenomena of the switch working in nonlinear mode, such as the ultrafast rising edge, luminous current filaments, and the lock-on state of current, are explained by the model of the photon-activated monopole domain.
最后，本文用光激发单极畴模型解释了光电导开关非线性工作模式的超快上升沿、发光电流丝、电流锁定现象等重要实验现象。
Boost regulators in CCM (with the exception of low-power/portable equipment) are almost universally constrained to peak current mode PWM control, owing to their right-half plane zeroes and the fact that they deliver power to the output when the control switch is off.
当需要把输入DC电压提升到一个高DC输出电压的时候，Boost调节器是最简单的选择，因为它允许在给定电压下串联更多的LED。
In thesis, we presented a burst-mode laser driver with automatic extinction ratio control. It improved single-loop-automatic power control method`s drawbacks, and used a novel dual-loop-automatic-power control method to realize the burst-mode laser driver. With the novel control method, laser diode`s optical power ratio for representing data 1 and data 0 can be controlled exactly in different temperature. Besides a novel structure, in circuit design, in order to have a fast power locking speed we included a dual-band switch. The aim is to utilize that wide band case has fast power locking speed, and narrow band case has high exact ER control ability. Finally, as for optical testing aspect, laser`s current driving ability is different for turning on and turning off case, and then it might cause optical eye diagram to be dissymmetrical. So, for canceling this problem, we also included a pre-distortion skill to get a symmetrical eye diagram in pre-driver stage.
在这一篇论文中，我们提出一可以控制雷射光亮暗功率比的脉冲式雷射二极体驱动电路，它改善了以往单回路功率控制的缺点，而改采一双回路功率控制的机制来实现脉冲式雷射二极体驱动电路，藉由此一功率控制的方法，雷射二极体输出代表资讯一和代表资讯零的发光功率比在温度变化后可以被精确控制，除了此为一新架构外，在电路的实现中，为了可以使功率控制可以能够有快速锁定的效果，我们引入了双频带的切换动作，目的是可以使功率控制在宽频带可以有快速锁定的效果，而在窄频带可以有高准确度的效应，最后，至於在光量测上由於电流驱动雷射二极体的开启和关闭的驱动能力不同，因此在光量测上可能造成输出的眼图不对称的效应，为了解决此一问题，我们在前置放大器中引入了前置失真的技巧来消除光量测上眼图不对称的问题。
Furthermore, the current transmission switch operation used to realize threshold-controlling circuit was established, and used to instruct the switch level design of current-mode CMOS Schmitt circuit.
建立实现阈值控制电路的电流传输开关运算，并用于指导电流型CMOS施密特电路的开关级设计。
Soft-switching can be achieved by using the resonant net work. The propose converter has such advantages as: zero current and zero voltage turn-on and zero voltage turn-off for the switch without increasing the voltage and current stress. The output inductor is kept in continuous current mode with small current ripple.
所提出的变换器具有如下的优点，零电压、零电流导通，零电压关断；不增加开关管的电压电流应力；输出电感电流工作在连续电流模式，其纹波很小；变换器可以工作在固定的频率，采用PWM控制。
These circuits have simple structures and correct logic function, which confirm that this theory can efficiently guide the switch-level logic design of current-mode CMOS circuits.
这些电路具有简单的电路结构和正确的逻辑功能，从而表明该理论能有效地指导电流型CMOS在开关级的逻辑设计。
Key words: switch theory; current-mode CMOS circuits; multi-valued logic; threshold-controllable technique; Schmitt circuits.
关 键 词：开关理论；电流型CMOS电路；多值逻辑；控阈技术；施密特电路
Its internal 550mA switch can deliver up to 350mA of continuous output current at voltages as low as 1.21V. The LT3990's Burst Mode operation provides ultralow quiescent current, well suited for automotive or industrial systems, which demand always-on operation and optimum battery life.
其内部550mA开关能于低如1.21V的电压时提供达350mA的连续输出电流，Burst Mode 操作可提供超低的静态电流，使其成为汽车或工业系统等要求always-on 操作及要求最佳电池续航力之应用的理想选择。
Brushless DC motor; four-switch converter; current sensor; phase current sensing; operating mode; operating submode; phase current regulation
无刷直流电机；四开关逆变器；电流传感器；相电流检测；工作模式；子工作模式；相电流调节
By using theory of switch-signal and the features of current-mode CMOS circuits, we proposes a mixed switch theory suitable to current-mode CMOS circuits.
首先以电流镜、电流传输器、开关电流电路知识为基础，介绍了构成数控电路的基本单元电路。
By applying switch-signal theory, the theory of transmission current-switches based on symmetric logic is proposed, this theory is suitable to design symmetric binary current-mode CMOS circuits and symmetric ternary current-mode CMOS circuits.
基于开关信号理论，建立对称传输电流开关理论，在该理论指导下设计对称二值以及对称三值电流型CMOS数字电路。
Notice that pressing i will place your cursor before the current position and then switch to insert mode.
我们注意到按下 i 后，光标回被放到当前字符的前面然后切换到输入模式。
In addition, this circuit slightly reduces the current drain in active mode by eliminating current flow through the unactuated switch.
此外，电路通过未激励开关消除电流的方法，从而略微减少了现有模式中的电流消耗。
Combined with the power switch mode power supply principle: the high-voltage alternating current (220V) to work through the entire bridge diode rectifier later become high voltages via direct current, capacitance in the future become more smoothing filter for high-voltage DC.
结合开关电源原理：电源先将高电压交流电（220V）通过全桥二极管整流以后成为高电压的波动直流电，再经过电容滤波以后成为较为平滑的高压直流电。
Power switch is connecting power supply source series with a transistor. When circuit is in idle mode, the power switch is disconnected from power supply source. A significant reduction on leakage current can be achieved via power switch.
功率闸主要是在电路与供应电压源之间的串接一个电压开关，当电路进入闲置时，功率闸将开启以切断於供应电压源之间的连接，由一些文献中得知功率闸对於漏电流可以达到有效的抑止。
Super-high speed BJT analog switch based on current mode technology
基于电流模技术的超高速BJT模拟开关
The switch power get fixed signal by PWM control mode and use the strain circuit of wave to supply the smooth current to the workgroup agriculture motor, and to improve the quality of power net.
通过电路中的脉冲宽度调制方式得到固定周期的控制信号，同时结合电路中的滤波电路，从而使工作组中的农用电机得到平滑的工作电流，进而提高了农用电网中电能的质量。
Circuit Analysis and Simulation of Three-phase Single-switch Power-factor Correction Converters Operating at Critical Continuous Current Mode
电流临界连续模式三相单管功率因数校正器分析
In order to supply the multichannel electrical stimulator, a DC-DC flyback switch mode power supply based on a high-performance current mode controller UC3845 has been designed.
为支持多路电生理刺激仪的供电工作，设计了一款基于高性能电流模式控制器UC3845的DC-DC反激式开关电源。