同时采用软启动电路防止浪涌电流，保护功率开关管。
To protect power switches, soft-starting circuit was designed to overcome the surge current.
电源还设置了软起动及过流保护电路，以防逆变功率开关管的损坏。
The source is put up the circuits with the soft start and overcurrent protection to prevent the switching-transistor from breakdowning.
软开关技术能够有效改善功率开关管的工作环境，降低开关损耗，提高变换器的效率。
Soft switching technique could improve the circumstance of the power switch, reduce the losses and increase the efficiency of the converter.
该逆变电路克服了传统逆变器的直通问题，功率开关管和功率二极管可以分别得到最优设计。
This topology overcomes the shootthrough problem in traditional inverter. The switch and diode can be designed separately.
然而，由于漏感影响，反激变换器功率开关管关断时将引起电压尖峰，必须用钳位电路加以抑制。
However, due to leakage effects flyback converter power switch off when the voltage spike caused by the need to be inhibited by clamping circuit.
针对逆变桥功率开关管短路、开路及霍尔传感器缺相等故障进行了仿真，得到了相应的特征波形。
The faults including short circuit, open circuit in power transistors and phasefault in Hall sensors are simulated and performance waveforms relevant to different faults are obtained.
尤其适合以igbt作为主功率开关管的高电压、大功率功率变换，具有广泛的应用前景和巨大的经济价值。
So this novel converter has a wide application and huge economy effect in power converting field, especially in the high voltage and high power feild where IGBT is used as the main switch.
通过对电容器充电回路开关管进行控制，实现交流输入端的高功率因数。
High power factor at ac input can be achieved by controlling the switch of capacitor charge circuit.
该电路具有既能将负载电流限制在设定值以内，又能控制限流工作时功率管的开关频率等特点。
This circuit has both characters of restricting the current within the giving value and limiting the switching frequency of MOSFET operating on current limited condition.
新型直流固态继电器是一种以新型器件IGBT以及功率场效应管为核心的，全部由固态电子器件组成的新型无触点开关器件。
The new type DC solid state relay is a kind of new contactless switching device, with the new type IGBT and power field effect tube as the core and composed completely by solid state electron devices.
研究了以功率MOSFET为开关管的串联谐振逆变器的频率跟踪问题。
The paper analyzes the phase-lock technique of serial resonant inverter with power MOSFET as switching device.
该拓扑具有所有功率开关均为软开关，输出二极管电压应力低和输入输出滤波器小的特点。
There are soft switching conditions of all switches, low voltage stresses on the output diodes, and smaller input and output filters in this topology.
提出了一种零电流开关结构的单开关管的三相升压功率因数校正整流器。
Zero current transition (ZCT) topology of the single switch three phase boost power factor correction (PFC) rectifier is proposed.
考虑到系统功率较大，三相桥式功率变换器的每个开关器件均采用四个MOS管并联的结构。
For high power system, every switch of three-phase inverter is actually made up of four MOSFETs in Parallel.
主电路采用具有无源辅助谐振网络的双管正激变换器，与普通双管正激变换器相比，功率管开关状态得到较好的改善，同时并没有增加电路的复杂性。
This paper introduces the circuit topology of portable inverter arc welder with soft snubber, mainly power circuit is a double switch forward converter with assistant resonant circuit.
其主电路采用全桥式拓扑结构，以IGBT管为功率开关器件，中频变压器使用微晶磁心。
Full bridge topology was used in the main circuit, IGBT was used as power switching device, and micro-crystal core was used in mid-frequency transformer.
为防止功率管开关过程中对控制电路造成干扰，采用光电隔离的方法实现驱动电路和控制电路的隔离。
To prevent the control disturbance in the process of MOSFETs on-offs, Optoisolator circuit has been used to realize the isolation of the driving circuit and the control circuit.
在硬开关状态下，PWM功率变换器的致命弱点是开关管开关损耗随开关频率成正比增加，不利于系统的集成和转换效率的提高。
The shortcoming of hard switch is that the power loss of power devices increases with the switching frequency, which is no good for system integration and improvement of conversion efficiency.
所述检测器可以测量所述功率输送电路的晶体管开关的节点处的电压，尤其是栅极处的电压。
The detectors may measure voltages at nodes of transistor switches of the power delivery circuit, particularly at the gates.
这种电路的每一支路中的元件，除一般电路元件外，还可能包括功率开关晶体管、二极管或隔离变压器的一个绕组。
Each of the converter circuit branches may contain a power switching transistor, a diode or a winding of an isolated transformer in addition to general circuit components.
介绍了一种采用自适应技术的开关型稳压电源，对电视发射机大功率发射管的冷态灯丝平滑上电压，有效提高了发射管的使用寿命。
The switch mode regulated power supply using self - adjusting technique is introduced. In TV transmitter, it is used to the large power transmit-ting tubes with variable voltage for cold filament.
分析了一种新颖的零电压零电流(ZVZCS)开关之电平变换器，以及功率晶体管的驱动电路。
A novel zero-voltage and zero-current switching (ZVZCS) three-level converter, and the drive circuit of the transistor were analyzed.
本文讨论了大功率晶体管在开关过程中的卸载问题，给出了RCD卸载电路及一种新颖的无损耗卸载电路，分析了卸载电路的工作过程。
This paper describes the unload circuits which are used in power transistor (SOA). RCD unload circuit and a novel unload circuit without energy losses are presented, their effects are discussed.
本文介绍了一种用SG3524开关稳压器构成廉价的IGBT功率管驱动电路，它具有电路简单、线性度好，适用范围广的特点。
This paper introduces a kind of the IGBT cheaper driven circuit being made up of SG3524 voltage regulator. It has the characteristics of circuit simple, linear circuit good and applicable range wide.
内部P沟道功率MOS，线圈，电容和外接二极管此外，这些IC可以作为降压开关稳压器 。
With the addition of an internal P-channel Power MOS, a coil, capacitors, and a diode connected externally, these ICs can function as step-down switching regulators.
主要电气部件均采用知名厂家晶体管集成块及德国原装的大功率高速开关管igbt组成。
Main electrical components are all made up of transistor manifold from well-known manufacturers and German original high-power high-speed switching tube IGBT.
主要电气部件均采用知名厂家晶体管集成块及德国原装的大功率高速开关管igbt组成。
Main electrical components are all made up of transistor manifold from well-known manufacturers and German original high-power high-speed switching tube IGBT.
应用推荐