查询词典 supply frequency

Recently,the control of power supply of high frequency switch has been developed towards the "high refined and cuspidate" direction.Although the parts of apparatus have small volume and refined precision,the Electro Magnetic Interference and radiation are much stronger than before.

现在的高频开关电源控制已向&高、精、尖&方向发展，这些器件体积小、精度高，但电源内部的电磁干扰、辐射比原来更强了，为了使高频开关电源在预期的电磁环境下能正常工作、无性能降低及故障，并对电磁环境中的任何事物不构成电磁干扰，必需对其进行电磁兼容。

Now there are 20TA OD finery、mid- frequency furnace、drawbench as well as hot and cold rolling mill、abrasive finishing machine etc, all of which are the guarantee to meet the customer's demand: Supply of goods timely, Large stocks.

承蒙广大用户的大力支持和信任，使公司从小到大，从大到好，总公司先拥有20TAOD精炼炉，中频炉，冷热轧钢机及冷拔机，抛光机等能为广大客户及时提供货源，库存量大，是客户需求的保障。

On the silicon substrate an epitomical layer is made,where IC components are formed subsequently.In an CVDprocess,the silicon substrates places in a vacuum crystal tube are first heated to 1,600°C by high-frequency radio power and then H⒉Cl⒉Si and certain gaseous compounds of As or P is injected into the tube to make a deposit of several um on their surface.Ions of As or P are impurity deliberately added to the singl-crystalline silicon structure to supply electrons that transmit "negative"current in the silicon crystals,which is called n-type silicon.Bcan be added as impurity to produce p-type silicon that supplies holes for transmitting "positive"current.Whether a p--type of an n-type silicon substrate is needed depends on what type of transistors is expected to be manufactured on it:n-p-n type of p-n-p type

对硅衬底上的一个epitomical层了，而IC零件形成subsequently.in一个CVD法（化学气相depsition ）过程中，硅衬底的地方在真空晶体管均先加热至1600 ° C时，由高频率的无线电功率，并然后h ⒉氯⒉硅和某些气态的化合物，砷或P ，是注入试管，使存款的几位嗯对他们surface.ions的作为或P是杂质刻意添加到单结晶硅的结构，以供应电子传递的&负面&目前，在硅晶体，即所谓N型silicon.b ，可以增加一条，作为杂质产生的p型硅供应孔转递&积极& current.whether一个P -类型的一个n型硅衬底，是需要靠哪些类型的晶体管预计将在制造上它： NPN型的PNP型

In a homodyne unit, we take advantage of the Gunn oscillators' instabilityby varying the DC supply to "push" the frequency slightly.

在简单型耿儿单元，我们利用耿氏二极管振荡器的频率不稳定的优点，通过改变直流电源把频率拉偏一点儿。

Its major products include electric lift emergency devices, elevator manostat , alternating and direct voltage-stabilized source , switching power supply ,lift emergency lamps, lift walkie-talkie, lift acoustic floor reporter and lift door frequency converters.

西奥电气位于经济发达的长江三角洲——启东经济开发区南苑工业园，主要产品有：电梯应急装置、电梯稳压器、交直流稳压电源、开关电源、电梯应急灯、电梯对讲机、电梯语音报站器和电梯门机变频器。

Switching-mode power supply ; electromagnetic interference ; coupling path ; high frequency radialization

开关电源；电磁干扰；耦合通道；高频辐射

ATbstract: he small frequency modulated transmitter, the power is small, may launch the wireless signal, accepts the signal with the radio, satisfies certain transmission range, Circuit easy system, low cost, power output does not exceed 5-8 mW, firing range to be in the housing area of about 100 meters, with an ordinary FM radio receivers, demonstrating his superb sensitivity and clarity, the most circuit design challenges of the part is only used 3 V power supply, and half-wave antenna will be such a launch capability.simultaneously can input the sound signal, may install modulation surveillance table to serve as the monitoring device, although the power is not very big, but should the interference protection normal radiobroadcasting signal.

小型调频发射机，功率小，可以发射无线信号，用收音机接受信号，满足一定的发射距离。电路简单易制，造价低廉，输出功率不超过5－8mW，发射范围在房屋区可至100米左右，用一部普通的FM收音机接收，显示其灵敏度和清晰度俱佳，电路设计中最富挑战性的部份就是只需用3V电源和半波天线便有如此的发射能力。同时能够输入声音信号，可安装调制监视表头用作监视器，虽然功率不是很大，但是应该防止干扰正常的无线广播信号。

The receiving circuit adopts programmable gain amplifier and filter, enables the instrument to realize the automatic filter and the automatic adjusting enlargement factor according to the echo signal's different amplitude and frequency; Having AC and DC power supply modes, the system can satisfy different situation; Having adopted the big screen TFT LCD,caused the tested wave displaying intuitively;Having designed the toucher ,which enables the system to have a human-computer interaction function, helps user operate facilely.

接收系统采用程控滤波和程控放大，使得用户能根据回波信号的强弱和探头频率的不同而选择不同的滤波电路和放大倍数；交直流供电满足不同的应用场合；采用高分辨率大屏幕TFT液晶显示器，被测波形直观形象；触摸屏输入，操作方便。

This series machine adopts best quality parts like Japanese WAC piezo-ceramics selectors, Denmark Danfoss frequency transformer for speed adjusting, Britain brand steel wire track and auto-oiler that supply oil as requirement in different place.

本系列机采用国际领先的日本WAC公司压电陶瓷选针器，丹麦产丹佛斯变频调速器，英国产钢丝跑道，同时配备的自动加油装置可根据圆机不同部位所需的不同油量而调定每个润滑点的加油量。

B DC high voltage power supply circuit short circuit, high voltage filter capacitor should check whether the breakdown leakage current, filament transformers for filament winding of whether the earth leakage, tube bracket fixed capacitor (high-frequency coupling capacitor) whether the breakdown leakage, rectifier diodes have breakdown short-circuit phenomenon

b 直流高压供电回路短路，应检查高压滤波电容是否击穿漏电、灯丝变压器的灯丝绕组是否对地漏电、电子管支架固定电容是否击穿漏电、整流二极管是否有击穿短路现象

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷