查询词典 constant current

The article introduces a design method of numerical precision constant current source based on high-power operational amplifier .

介绍了一种在大功率运放 OPA549基础上的数控精密恒流源设计方法。

This pentode functions as a constant - current source for the input differential pair and is connected to a regulated -125-volt supply.

这pentode职能不断-电流源的输入和差分对连接到调节， 125伏的电源。

According to the characteristics of a HgCdTe photoconductive detector, a preamplifier with a constant current bias circuit is designed.

本文从HgCdTe光导探测器的工作特性出发，设计了等效内阻很高的恒流偏置低噪声前置放大电路。

An optimal nonlinear compensation transmiting circuit of temperature measure was designed,which measuring using platina resistor stimulated by constant current source.

设计铂热电阻恒流激励测温的最佳非线性补偿变送电路，同时利用半导体致冷器件即可加热又可致冷的双向特性，制成以半导体致冷器为冷/热源的高精度控温系统，在20~40℃，控温精度高达±0。

The precursive Fe3O4 films were sulfurized using constant current electrodepositing and oxidation treating, and Fe3O4 films was transformed into FeS2 thin films after heat sulfur annealing of 400℃ at different sulfurizing pressures.

采用恒流电沉积及氧化处理制备Fe3O4先驱体薄膜，再通过400℃下的热硫化退火，使Fe3O4先驱体薄膜在不同硫压下转变成为多晶FeS2薄膜。

It includes high power high voltage constant-current-charging system, capacitors bank, discharge control system, power supply of preignition for Xe-flashlamps, general control and diagnostic system. The power conditioning system drives flashlamps that pump the SSHCL. Flashlamps are driven by high voltage Silicon Controlled Rectifiers switched, resonant charged, discharge pulse forming network. The system uses microchip and digital circle which is based on CAN-bus for control and diagnostics. Energy diagnosis and thermal management are controlled by computers.

其中大功率高压恒流充电装置采用了L-C串联谐振电路，充电功率大，效率较高；储能装置采用了多节脉冲成形网络，可产生波形良好的强电流放电脉冲；放电控制装置采用高压大功率晶闸管，开关速度快，工作稳定；预燃与触发装置采用了开关电源电路，效率高、功耗小；总控与测量装置采用基于CAN总线的数字电路和单片机技术，控制冷却系统在激光器出光时对脉冲氙灯进行水冷，并对全系统进行控制和状态检测，同时具有过压、过流、过热等保护功能。

MSP430F169 microcontroller was the core components of control and measurement function of an electromagnetic relay characteristic parameter tester. The tester also included DC power module, power amplifier module, constant current source module, keys, and digital tube display module. The tester could test the data of 943-1C-12DS electromagnetic relays including the minimum pull-in voltage, maximum release voltage, relay coil voltage rating when the pull-contact time, release time as well as the contact value of the contact resistance. The system could complete automatic measurement parameters to achieve all the basic requirements of design. And all of the test data was displayed through the 74HC573 digital tube.

摘 要：以MSP430F169单片机作为控制和测量的核心部件，辅以直流稳压电源模块、功率放大电路模块、恒流源模块、按键和数码管显示模块等组成一个电磁式继电器特性参数测试仪，完成对943-1C-12DS电磁式继电器最小吸合电压、最大释放电压、继电器线圈电压为额定值时的触点吸合时间、释放时间以及触点接触电阻值的测试，该系统能够实现成套参数自动测量，所有测试数据通过74HC573数码管进行显示。

Comparisons between the preparations of scheelite polycrystalline films by constant current and cell electrochemical technologies have been investigated in detail.

详细地比较研究了白钨矿多晶膜的恒电流电化学制备技术和原电池电化学制备技术。

Study of a solar constant current controller

往复泵和注射泵均属于恒流泵。

Web constant current circuit design, strong resistance against static electricity, which ensure the stability of LED module.

Web的恒定电流电路的设计，强烈的反抗静电力，确保稳定的LED模块。

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。