最大电流恒定及截止式电路保护装置，免除故障手机线路板进一步损坏。
Protection devices of maximum current steady and cut-off electric circuit avoid further damage of failure phone circuit board.
当电机负载过载或堵转时，采用电流截止负反馈环节可保护电机和驱动器；
Motor and inverter can be protected by the current cut-off negative feedback when motor is overload or locked-rotor.
分析了各部分的电路结构及特点，讨论了PW M脉宽调制信号生成、逻辑信号综合、驱动控制及电流截止负反馈的具体应用，在此基础上给出了实验数据及结果分析。
It analyses some main circuits's features, including PWM signals, logic synthesis, driver and negative feedback of current cut-off and at last gives the result of experiment.
采用数字信号处理器（DSP）控制器，设计了具有电压前馈和电流截止负反馈的转速闭环弱磁调速系统。
The speed adjusting system with field weakening with voltage feedforward, current closed negative feedback and speed closed loop was designed by adopting digital signal processor (DSP).
过 压保护和电流截止负反馈等电路来提高运行可靠性。
The system adopted some over-current, over-voltage protection and current cut-off feedback circuits to improve systems reliability.
由于Q2的基极-发射极的电压为0V而截止，因此没有负载电流流过r6。
Consequently, no load current flows through R6 because Q2, whose base-emitter voltage is now 0v, has turned off.
由于Q2的基极-发射极的电压为0V而截止，因此没有负载电流流过r6。
Consequently, no load current flows through R6 because Q2, whose base-emitter voltage is now 0v, has turned off.
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