查询词典 constant current

When designing the step motor drive circuit of 5 phase 10 pat,89C2051 is adopted as the Loop allotter. The VMOS is adopted in power elements. It is designed as chopper-type constant current circuit.

设计五相十拍步进电动机驱动电路时选择了89C2051作为环形分配器，而功率器件选用电压型的VMOS管。

The aluminum groove used for heat dissipation is extrusion molding by 6030 aluminum ,and through anodize precessing technic ,with scientific struction for heat dissipation design ,which can solve the problem of heat dissipation efficiently , and can longer the life-span of LEDs , In addition ,the driver power utilize constant current IC driver ,which can asure the precise of power output and the stability during the couse of using .

散热铝槽采用6063铝挤出成型，经过阳极氧化等加工工艺处理，加上科学的散热结构设计，有效解决灯管散热难的问题，大大提高 LED 使用寿命。驱动电源采用恒流 IC 驱动方案，电流输出的精度高，确保 LED 使用的稳定性。

With the constant current mode, the images of highly oriented pyrolytic graphite surface with atomic resolution have been obtained, with an anomalously large corrugation about 0.3 nm.

用恒流模式获得了高定向热解石墨具有原子级分辨率的STM形貌图，这些图象的皱折值约为0.3nm，比实际值0.07-0.1nm大得多。

METHODS: On the basis of PMT passive voltage biasing circuit, Bipolar Transistor or Field Effect Transistor were used. Additionally,"adjustable constant current technology" was adopted to avoid the effect of temperature on circuit.

在电阻型光电路倍增管偏置电的基础上，增加双极型晶体管或场效应晶体管构成有源光电倍增管偏置电路；并采用可调恒流技术，以解决温度对电路的影响。

The standard system is composed of coil system, constant current power supplies system, advanced compensation system based on caesium optically pumped magnetometer and the measurement system and so on.

恒定弱磁标准装置是由线圈系统、光泵地磁补偿系统、恒流源系统、磁场测量系统等组成。

More than 50 GaAs/GaAlAs High Power Single Quantum Well Semiconductor Lasers are aged. The threshold current decreases during the early aging (first 520 h) and the largest decrease is 57 mA. From the aging result of more than 1000 h at constant current, we find that output power increases during the early aging , and then decay slowly according to exponent law.

通过对50余只808nm的GaAs/GaAlAs高功率单量子阱远结半导体激光器的老化实验观测，在老化初期（前520h），阈值电流随老化时间的延长而下降，下降幅度高达57mA，从1000h多的恒流电老化结果可以看出，器件的输出光功率在老化初期有所上升，随后，表现出按指数规律缓慢下降的行为。

This paper instructed the numerical control DC constant current source which makes use of the AT89C51 version single chip microcontroller is the main controller in this system, while the set value and the real output current can be displayed by LED.

本文介绍了采用AT89C51单片机为主控制器，通过键盘来设置直流恒流源的输出电流，并由数码管显示电流设定值的数控直流恒流源。

In order to resolve the problem of large switching loss at rated current, a constant current ripple control method is proposed along with varied frequency control.

同时，针对额定电流输出时开关损耗应力较大的问题，提出了电感电流恒脉动的变频控制方法。

By enhancing the charging current,the pulsant problem for repetitive charging with constant current charging device was solved,and then,repetitive operation experiments were carried out.

在利用恒流充电装置充电的重频实验过程中，通过采用提高充电电流的方法，解决了发生器恒流充电时的充电脉动问题，进而开展了重复频率运行实验研究。

Canal nerve stimulator has characteristics of isolated output current, constant current and short circuit protection of output.

双输出电疗仪具有输出电流隔离，恒电流和输出短路保护特性，由12个标准程式和12 个用户程式组成。

Graf, without question, is the greatest women's player in history.

格拉芙，现在，毫无疑问是女子网坛历史上最伟大的选手。

If not, you will have to look around at all your important data.

如果没有，您将需要检查所有的重要数据。