The outlook of high frequency switch power supply in application to high fidelity audio frequency power amplifier is indicated.
指出了高频开关电源在高保真音频功率放大器中广阔的应用前景。
The high frequency switch circuit taking IGBT as main switch component are driven by the special purpose driver EXB840 controlled by TL494.
以igbt为主开关元件的高频开关电路，由TL 494控制的集成专用驱动器exb840驱动。
Introduce the high frequency switch technical features of the DC battery panel not vindicated, and pay attention to the problems during using it.
介绍高频开关免维护电池直流屏的技术特点，以及在运用中应该注意的问题。
As a kind of MEMS actuators, micro mechanical radio frequency switch is a representational structure of micromechanical technology, and basis of many micro mechanical components.
微机械射频开关作为MEMS执行器的一种，是微机械技术中的一类有代表性的结构，是很多微机械器件的基础。
Recently, adoption of the high frequency switch mode power supply and the processing controller based on the programmable chip are the trend of the development of laser technology.
近年来出现的高频开关电源技术和以可编程芯片为核心的控制技术也逐渐在激光器设计中得到应用。
According to the design demand of DC power supply panel in engineering, this paper introduces the selection of rectification DC rectification power system with high-frequency switch.
针对工程中对直流电源屏的设计需要，简要介绍了高频开关整流电源直流系统的选择。
The structure and theory of main circuit, control circuit and protection circuit of modularized charge power supply composed by IGBT high frequency switch tubes are introduced in this paper.
介绍了利用高频开关管IGBT构成模块化充电电源的主电路、控制电路及保护电路的结构、原理。
A novel high frequency switch power supply, which is suitable for power network outside, is introduced in this paper, and a automation switching circuit for 110V/220V input voltage has been designed.
介绍了一种适用于户外电网远程监测监控的不间断高频开关电源，设计了一种简易可靠的110V/2 2 0V自动切换电路，以满足宽范围电压输入要求。
The coils all get tuned to the right operating frequency and electricity is transferred to them using a switch-mode controller.
当这些线圈被调节到合适的操作频率，电流就可以通过一个开关控制器转换给这些线圈。
Changing from one preset current to another can be simple as pressing a button, or switch automatically at an adjustable frequency.
从一个电流转换到另一个电流只需简单的一个按钮﹐或者在一个可以调节的频率下自动切换。
The switch frequency is increased and the output harmonic is decreased while the overcurrent protection is ensured.
保证过电流保护的同时，还提高了开关频率，减小了输出谐波。
In these cases, filters can be added to the switch to modify the signal frequency bandwidth, or spurious signals at unwanted fre quencies can be eliminated from the signal to the DUT.
在这些情况下，可向开关加入滤波器来改变信号的频率带宽，或者从发射到DUT的信号中消除有害频率的杂散信号。
DDS technology can switch frequency fastly in phase continuous.
应用dds技术可实现相位连续的快速频率切换。
All these requirements order operation switch, valves, and corresponding control frequency converter to complete.
所有这些要求顺序操作相应开关、阀门和控制变频器来完成。
Experiments and simulations show that the proposed system can operate in audio switch frequency range without audio noise from the motor load, meanwhile, EMI can be limited to low level.
实验与仿真结果表明：该系统采用音频开关而不导致电机负载的音频噪声，同时使EMI能被限制在低电平。
The model considers the dynamics of converter switch circuit and can be applied in the analysis for high frequency dynamic characteristics.
该模型考虑了换流器开关电路的动态特性，适用于高频动态特性分析。
The switch frequency of the direct power control system using hysteresis comparator is not fixed, which is a technical issue in practical needing be solved.
采用滞环比较器的直接功率控制系统的开关频率不固定，是实用化过程中需要解决的一个技术问题。
Inverters can also automatically event of the failure of the faulty electrical switch to the state of emergency frequency.
也可以在变频器发生故障时自动将发生故障的电机切换到工频状态应急工作。
The flight attendant stayed inside the cockpit for a brief chat just as controllers were instructing the crew to switch to another radio frequency.
就在地面塔台正在指示飞行员转向另外一个无线电通话频率时，这位空服人员呆在驾驶舱短暂聊了会儿。
The improved control method can make the two power switches turn on and off all under soft switching conditions and further increase the switch operating frequency and power density.
通过改进控制方式，可以使这两个功率开关的导通和关断都工作在软开关条件下，从而可以进一步提高开关频率，达到增加功率密度的目的。
High voltage silicon pile is the key component of the output circuits of color TV and color monitor, whose switch frequency is the direct restrictive factor of line scan.
高压硅堆是彩电和彩色显示器行输出电路中的关键器件，其开关速度的快慢直接限制了行扫描频率的高低。
The control signals of invertor are produced by space vector modulation to achieve a small torque ripple and constant switch frequency.
以空间矢量调制方法来获得逆变器的开关信号，实现了小的转矩脉动和恒定的开关频率。
It has characteristics of large current, high power, high voltage, high switch frequency, proven reliability, low losses and so on.
它具有大电流、高电压、开关频率高、高可靠性、结构紧凑、低损耗的特点。
When frequency converter and PLC is at fault, automatic switch to the original soft start work frequency power operation, ark to ensure the normal work of the compressor.
当变频器及PLC发生故障时，自动切换到原软启动柜工频电源运行，以保证压缩机的正常工作。
The traditional direct torque control system has existed large torque fluctuation, poor performance of low speed region, inconstant switch frequency, etc.
传统的直接转矩控制存在着转矩脉动大，低速性能差、开关频率不固定等问题。
A discrete frequency control method is proposed for thyristorized static switch.
介绍了用于感应电机起动的离散频率控制方法。
The circuit model for IGBT simulation is provided. The relationships between IGBT power loss and the switch frequency and between IGBT power loss and grid resistance are presented.
建立了IGBT电路仿真模型，给出了IGBT功率损耗与开关频率和栅极电阻阻值之间关系的仿真结果。
The circuit model for IGBT simulation is provided. The relationships between IGBT power loss and the switch frequency and between IGBT power loss and grid resistance are presented.
建立了IGBT电路仿真模型，给出了IGBT功率损耗与开关频率和栅极电阻阻值之间关系的仿真结果。
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