At normal operating voltage , the tvs diode is inactive , like an open circuit 雪崩崩潰二極管是以反向電流的方式,連接在線路上。
Back current brake 反向電流電剎車
A current that flows in an opposite direction to the flow of another current 逆流,反向電流;逆電流與另一水流或電流的流向相反的水流或電流
Measurements of the electrical properties of transmitting tubes - measuring methods of reverse grids current 發(fā)射管電性能測(cè)試方法柵極反向電流的測(cè)試方法
In many circuit , this reverse current does not affect the convert characteristic and so the diode can also be considered as ideal during the turn - off transient 在許多的電路中,二極管反向電流不會(huì)影響換流器特性,因此在關(guān)斷過程中仍然可以視為理想的。
However , the h - bridge maglev chopper has serious switching losses , so as to have snubber circuit ; there is high emi with the chopper 然而, h -橋斬波器開關(guān)損耗大,需要添加緩沖網(wǎng)絡(luò),電磁干擾十分嚴(yán)重;對(duì)供電電源有反向電流沖擊,容易造成供電電源和濾波電容的損壞。
Compared with existing modulating method , torque ripple is greatly reduced by uniform modulating in one monocycle , increasing current slope of upcoming conducting phase instantaneously suppresses the torque ripple by 30 ’ during low speed with obviously lower initiating noise 采用單周期內(nèi)各功率管均衡調(diào)制的方式,不僅消除了反向電流,而且與其他調(diào)制方式相比,可使轉(zhuǎn)矩脈動(dòng)較小。
For the pin diode , its major transient behaviors are forward voltage recovery and reverse current recovery . this dissertation describes these performances by lumped - charge approach , and then developed an improved lumped - charge model for pin diode and a corresponding parameter extraction approach , which can reduce parameter measurement and enhance parameter accuracy Pin二極管中主要的瞬態(tài)現(xiàn)象是正向電壓恢復(fù)和反向電流恢復(fù),本文采用集總電荷的方法描述了它的動(dòng)、靜態(tài)特性,提出了改進(jìn)的集總電荷的pin二極管高頻模型,同時(shí)提出了改進(jìn)的曲線擬合模型參數(shù)抽取方法,減少了所需的參數(shù)測(cè)量實(shí)驗(yàn)并提高了參數(shù)抽取的精度。