constant current

The simplest constant-current source, is to use a constant current diodes.

最简单的恒流源, 就是用一只恒流二极管.

It includes the constant current source ( CCS), power amplifiers, excitation coils, physical phantom, measurement-mode setting circuit, signal measuring block, DAC and digital I/ O card.

该系统包括恒流源、功率放大器、激励线圈、物理模型、测量模式设置模块、信号检测模块、数据采集和数字I/O卡。

The high-precision constant current source-frequency rectangular wave excitation is adopted to ensure the stable magnetic field.

采用高精度恒流源低频矩形波励磁,确保磁场的稳定.

Combined type of precise constant-current source

复合型精密恒流源

The Realizes of Single Chip Microcomputer Control Stepping Motor Chopping Wave Constant Current Division Driver

单片机控制的步进电动机斩波恒流细分驱动器的实现

Design of PWM Constant Current Division Drive Circuit of Stepper Motor

PWM细分恒流步进电机驱动电路的设计

Independent electrode design to ensure better constant current control.

极设计以确保较佳的定电流控制.

Study of constant-current source for measuring DCR of large electric power equipment

电力设备直流电阻测量用恒流源研究

Through the reasonable selection of division electric current waveform of phase winding for stepper motor and motor drive IC, it presents and introduces the motor drive scheme of constant current and division based on microcomputer and the relative technique.

通过合理选择步进电机细分电流波形和驱动芯片，提出并介绍了单片机控制的细分恒流步进电机驱动方案及实现技术。

This numerical control constant current source with the core of single chip microcomputer can provide exact control for the output current, the control could attain milliampere level.

这种以单片机为核心的数控恒流源实现了对输出电流的精确控制，控制精度可达毫安级。

Apply PWM control technology, outstanding constant current property, precise current Control.

采用(PWM)控制技术, 恒流特性好, 电流控制精确.

NENDE electronic constant-current power supply High power LED!

能的电子---大功率LED恒流电源!

A design for a Li-ion battery charger a constant current-constant voltage ( CC-CV ) charge mode is proposed.

提出了一种基于恒流 - 恒压 ( CC-CV ) 充电模式的锂电池充电器.

The constant current generator characteristic of source is realized by proportional integral ( PI ) algorithm.

采用 PI 算法,实现电源恒流外特性控制.

The constant current source is realized by inverter power.

恒流源由单相逆变电源实现.

The surface potential build-up with constant current corona charging for polypropylene electrets was investigated.

本文讨论了聚丙烯驻极体恒流电晕充电期间电荷的建立.

Apply PWM + PFM control technology, constant current output, stable welding current.

采用PWM+PFM控制技术, 恒流输出, 焊接电流稳定.

Pulse constant-current source based on capacitor discharge

电容放电式脉冲励磁电源研究

Tonnage Indicator Excited by Dual Constant-current Source Used in Press

双恒流源激励的压力机用吨位指示器

The main circuit used SEPIC topology and pulse constant current drive mode. It has PWM dimming function and is suitable for driving high power LED lamp string.

该电路主电路采用sepic拓扑，脉冲恒流的驱动方式，具有脉冲频率调制（PFM）和脉冲宽度调制（PWM）调光等功能，适合驱动大功率LED灯串。

Inner using off-line PWM switch constant-current supply driver, efficient, working steady, function-reliable.

内部采用 离线 式脉宽调制开关电源恒流驱动, 效率高, 工作稳定, 性能可靠.

The 236 source-measure unit of KEITHLEY company was used which can supply the constant current and the high input resistance.

测量采用吉士利公司的236源测量设备提供恒定电流和高输入阻抗的电压测量。

This paper presents a-speed determining method on-resistance by using a constant current source.

提出一种用恒流源快速测低电阻的方法.

Constant current charging machine using LC series resonance

LC串联谐振恒流充电系统

Design of reactive type stepping motor chopping wave constant current division drive circuit

反应式步进电机斩波恒流细分驱动电路的设计

New Pattern Portable Charging Equipment& HCQ Series Constant Current Charging Device

车用新型便携式充电设备&HCQ系列恒流充电器

Therefore not suitable for precision constant-current demand.

因此不适合精密的恒流需求.

A pulse constant-current source based on capacitor discharge was developed for LIA accelerator.

针对大型直线感应加速器单次工作的特点，研制了一种电容放电式脉冲励磁电源。

No stroboflash, LED constant current , Fast starting, eyeshield, environmental protection.

无频闪, LED恒流恒压(低压)工作, 启动快, 无频闪,预防少儿近视,有效保护眼睛.

Besides , constant current and choppingand triangle-wave driving method were adopted to improve the toque performance.

采用恒流技术结合三角波形的高性能驱动方式,改善了电机的运行性能,并实际证实了该控制技术的可行性.