Source Greetings everyone! My name is Constance Itohan, a 25-year-old makeup artist and entrepreneur from Nigeria. I'm honored to be here today to share my thoughts on the skills required to be successful

经典！变频器内部主电路详解~ 一、内部主电路结构 采用“交-直-交”结构的低压变频器，其内部主电路由整流和逆变两大部分组成，如图1所示。从R、S、T端输入的三相交流电，经三相整流桥（由二极管D1～D6构成）整流成直流电，电压为UD。电容器C1和C2是滤波电容器。6个IGBT管（绝缘栅双极性晶体管）V1～V6构成三相逆变桥，把直流电逆变成频率和电压任意可调的三相交流电。 图1 变频器内部主电路 二、均压电阻和限流电阻

INTERNATIONAL WOMEN DAY My participation for international women day organised by @beanz I will be celebrating the love of my life she is by name Nwankwoala Chika she is a native of River state, she is