这些开关必须足够坚固能满足军用的需要,并且有能适应各种光学环境的专用光学零部件,这些部件的价格可能高达每个500美元。
The switches, which must be durable enough to withstand military demands and have special optics for all types of lighting conditions, are often priced as high as $500 each.
就在上个月,日本汽车制造商不得不在全世界召回65万“飞度”斜背式汽车,以修理开关故障,否则会引起火灾。据称,一点故障会导致水进入电动车窗,引起部分零件过热。
Just last month, the Japanese carmaker had to recall 650, 000 Fit hatchbacks worldwide to fix a switch defect that could cause a fire.
在零散过程中,使用处理过程不会导致其自身的改变,打开开关并不改变开关本身的功能、潜力或可预测性。
In trivial processes, the state of a process is unchanged by the invocation of the process. Switching on the light doesn't change the function, potential, or the predictability of the switch.
Mead指的是,当事物接近于零的时候,人们的心理开关将发生翻转。
What Mead understood is that a psychological switch should flip as things head toward zero.
本公司是一家专业生产开关产品、电子器械器具及零部件,集科研、生产、销售、服务为一体的企业。
The Company is a professional manufacturer of switch products, electronic equipment apparatus and parts, scientific research, production, sale and service enterprises.
起初,开关断开,CSHUNT保持零电荷。
Initially, the switch is open, and CSHUNT holds zero charge.
通过对这种变换器的工作原理分析可知,主辅开关管都可以实现零电压或零电流开关,且电压、电流应力较小。
Through the operational principle it can be verified that all the switches are capable of achieving ZVS or ZCS condition, and the voltage and current stress are relatively low.
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.
用双向晶闸管作为电子开关,双向晶闸管过零触发,因而输出的是完整的正弦波。
Using electron switch by BTA, BTA at touch off cross zero, thus deferent electron sine wave is intact.
提出了一种新型的零电压开关全桥三电平直流变换器。
This paper presents a novel zero voltage switching full bridge three level converter.
分析了一个新的零电流开关(ZCS)单元电路的特性。
The characteristics of a new zero current switching (ZCS) - PWM cell are analyzed.
谐振直流环节逆变器是一种零电压开关逆变器。
Resonant dc link inverter is a zero voltage switching inverter.
这种高频电源较好地实现了开关管的零电压(ZVS)软化,得到了较宽的调功范围。
The high frequency inverter used here can achieve zero voltage soft switching (ZVS) and wide power regulation range.
利用有源钳位电路实现主变压器铁心对称复位,功率开关在宽输入电压和宽负载电流范围内零电压开关。
By using an active clamp circuit, the power transformer core is symmetrically reset. Zero voltage switching conditions are achieved over a broad input voltage and output current range.
同时随机化零矢量,通过约束保证平均开关频率等于采样频率。
Zero vectors are randomized with the sample frequency and the average switching frequency equals to sample frequency with some constraint.
介绍了一种新型的零电压转换软开关技术在大升压比PW M直-直变换器上的应用。
In this paper, a novel Zero voltage Transition soft switching techniques have been investigated for a PWM DC DC large boost conversion application.
该变换器中的开关管实现了在零电压下关断,而且其中两个开关管在零电流零电压下开通。
All switches are turned off with zero voltage switching, and the two switches of them are turned on with zero current and zero voltage switching.
零、火线双断开关设计,配有电源指示灯。
It is provided with L and N double-break switch and power indicator lamp.
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.
提供了该变换器两个死区时间的设计方法,从而保证了开关电压应力限制在输入电压的一半,同时满足每个开关零电压关断的实现条件。
The design consideration for two dead times is presented to assure that voltage stress for main switches is within half of input voltage and ZVS for each main switch is achieved.
要提高开关频率可采用使开关损耗为零的方法,使之只受器件的固有参数限制。
Zero switching loss can be used to make it affected only by inherent characters of devices.
不需要任何辅助开关或无源谐振网络,变换器就可在双向变换工作中实现零电压开关。
Without the need of any auxiliary switches or complex passive resonant network, the converter can achieve ZVS in both forward and backward modes.
本文提出了一种新型的零电压零电流开关pwm推挽三电平直流变换器,其中开关管的电压应力为输入电压。
This paper presents a novel zero voltage and zero current switching (ZCS) PWM push pull three level converter in which the voltage stress of switches is input voltage.
介绍了一种基于零电压软开关技术和双闭环控制模式的大功率等离子喷涂高频开关电源。
A novel plasma spray power supply based on ZVS soft-switching technology and double close loop control mode is presented in this paper.
此变流器采用一个耦合电感可在整个线路和负载范围实现主开关的零电压开关。
A coupled inductor is applied to implement ZVS of the primary switches for line and load.
提出一种双零电流开关pwm升压斩波变换器电路,使得主开关和辅开关的开通和关断都在零电流条件下进行。
A novel zero current Transition (ZCT) PWM Boost Converter Scheme proposed in this paper enables all main and auxiliary switches to be turned on and to be turned off under zero current conditions.
具有零电流开关特性的谐振开关电容变换器是开关电容变换器的一种新拓扑形式。
The resonant switched capacitor(RSC) converter with zero-current switching(ZCS) is a new topology of switched capacitor converter.
详细叙述了漏电开关零序电流互感器及其铁芯,脱扣器的工作特性、材料选用。
The properties and selection of the zero-phase sequence current transformer core and tripper for GFCI are in detail described.
提出了一种零电压软开关高功率因数变换器电路。
The paper presents a kind of zero-voltage soft-switching unity power factor converter.
提出了一种零电压软开关高功率因数变换器电路。
The paper presents a kind of zero-voltage soft-switching unity power factor converter.
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