2.串联 电容器的电容: C2C1.等效 A 令U=U,-U U=U,+U,+U2…+U CD01+b+“+→C+ q 串联可提高耐压能力2. 串联 电容器的电容： =  C i Ci 1 1 等效 1 1 U q C = U U U U Ui = + + + 1 2 3 U U Ui q U q C + + + = =   1 2 C UA UB 令 U =UA −UB C1 C2 C3 Ci UA UB 2 2 U q C = i i U q C = q U q U q U C i  = + ++ 1 2 1 串联可提高耐压能力