Multiple funcyions available : start / crater arc current , increase / decrease time , base , crest value current , pulse frequency , pulse rate , post flow time , hf / friction welding , water / gas cooling 功能丰富:起始/收弧电流、上升/下降时间、基值电流、峰值电流、脉冲频率、占空比、滞后关气时间分别可调,高频/接触引弧、水冷/气冷可供选用。
These devices would need to be tested to a peak current whilst simultaneously measuring the vpl . the class 2 test accomplishes this requirement . the waveshape is defined , not the charge q 对这类型的设备进行峰值电流的测试,同时测量其电压保护水平( vpl 。等级2测试规定了这些要求,并对波形进行了定义,但没对电荷q进行定义。
Green - mode which provides off - time modulation to linearly decrease the working frequency under light - load conditions and power limiting which will turn off the transistor when peak current of inductor reaches the threshold current 同时该电路集成了能在轻负载情况下自动降低频率的绿色模式以及能在电感峰值电流过高时关断调整管的功率限制模块,降低了系统的功耗。
Many control methods are explored , including average current control , peak current control , hysteretic control , nonlinear carrier control , etc . all of these control methods had been implemented by the analog circuits 许多控制策略运用于pfc电路中,如平均电流控制、峰值电流控制、滞环控制等。现今已发展出许多pfc模拟电路专用的控制芯片,如应用于平均电流控制策略的uc3854 3855和ml4824等。
The method to obtain the equivalent inductance of im is proposed , and the small - signal model of the peak - current controlled im - fac converter is founded . based on the presented small signal model , the parameter design of the compensator is accomplished 提出im中电感的等效方法,依据电感等效值和建立的峰值电流控制fac变换器的小信号模型完成了采用峰值电流控制的im - fac变换器的小信号分析和补偿器设计。