查询词典 bulb rectifier

According to the characteristics of the conventional rectifier circuit that there exists a dead area with top wave,a new nonlinear rectifier circuit with impedance transformation has been.

针对常规整流电路输入电流存在死区、呈尖顶波的特点，设计了一种非线性阻抗变换整流电路，从而有效地克服和缩小了输入电流的死区范围，同时改善了系统的功率因数品质。

Another limitation of the vacuum tube rectifier was that the heater power supply often required special arrangements to insulate it from the high voltages of the rectifier circuit.

真空管整流器的另一个限制是加热器电源经常需要特别安排，以使它遭受高电压的整流电路的影响。

Finally, the simulation of the system and the experimental results of PWM rectifier are presented. The results of the simulation and experiment indicate that the input power factor is close to 1, the output voltage of the rectifier is stable and the high quality charge and discharge: current of the accumulator is achieved, current ripple is small.

本文最后给出了系统的仿真和PWM整流器实验波形，仿真和实验的结果表明：系统实现了输入功率因数接近1，变流器输出电压稳定；获得了较高质量的蓄电池充放电电流，电流纹波小。

Capacitive rectifier, a traditional rectifier for electronics instrument, can result in a lot of input current harmonics, which brings the main to harmonics distortion.

传统电子设备的电源输入端采用二极管整流和电容滤波，其输入电流含有大量的奇次谐波，对电网造成巨大的谐波污染。

Dynamic large-signal, DC, and small-signal circuit models including parasitic resistances and current ripples of nonideal synchronous rectifier buck converter operating in CCM are established. Closed-loop modeling of nonideal synchronous rectifier buck converter for voltage-mode control is studied. Transfer functions are obtained. Effects of parasitic components on control loop design of the converter are explored. Systematic simulation analysis is performed. All the results show that it is necessary to include parasitic components of converters into equivalent models.

首次建立了考虑寄生电阻和电流纹波的同步整流 Buck 变换器在连续工作模式下的大信号平均模型、DC 和小信号电路模型，研究了电压控制的闭环建模，导出了传递函数，剖析了变换器的寄生参数对其控制电路设计的影响，进行了小信号特性的仿真研究，进一步阐明了考虑变换器的寄生参数建模的必要性。

By using synchronous rectifier, a higher efficiency low-voltage output DC/DC converter module can be achieved. This paper presents a kind of synchronous rectification DC/DC converter, which includes active clamp circuit, insulating transformer, and current double synchronous rectifier.

为提高低输出电压的DC/DC变换器的效率，提出了一种倍流同步整流有源箝位DC/DC变换器，电路拓扑主要包括有源箝位电路、隔离变压器和倍流同步整流电路。

This is a small circuit board in the base of the bulb that uses a rectifier, a capacitor and a pair of transistors to produce a steady, high-frequency voltage that stabilises the current which passes through the mercury vapour in the tube.

这是一个在灯泡基座上包括镇流器、电容和一对产生稳定、高频电压的晶体管的小电路板，用来稳定通过电子管的汞蒸气的电流。

This is a small circuit board in the base of the bulb that uses a rectifier, a capacitor and a pair of transistors to produce a steady, high-frequency voltage that stabilises the current which passes through the mercury vapour in the tube.

安定器是荧光灯基座上的一块小小的电路板，利用一个整流器、一个电容器和一对三极管产生一个稳定的高频电压来稳定通过灯管内汞蒸气的电流。

Marine steel include bulb steel, angle bar, H shape steel, channel steel, flat-bulb steel, round steel, half-round bar steel, square steel and steel pipe and so on should be in accordance with relative regulation, and the negative size and thickness should be in accordance with national ship regulation, national relative standard and the standard of metallurgy field.

1.2 。1 。4 船用型钢 1.2 。1 。4 Marine steel 船用型钢包括球扁钢，角钢，工字钢，槽钢，扁钢，圆钢，半圆钢，方钢和钢管等，除应符合相应的规定外，其尺度及厚度负偏差均应分别按我国船舶规范和有关的国家标准及冶金专业标准检验。

Scale cutting method combined with different growth medias was used to evaluate the effect of slice number per bulb, bulb scale development stage, water content and cutting time on the proliferation ability of the bulblet formation with 10 cultivars from domestic and abroad.

以国内外10个朱顶红品种为材料，研究了不同品种、鳞茎切块数量、鳞茎年龄、基质种类、基质含水量、切块时间等因素对朱顶红繁殖能力的影响。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"