9-1阻抗和导纳 ☆RLC串联电路 R r jOL ++ua-+L-+ U R L C U 1 - U Jac KVL: U=UR+UL+UC=RI+jOL I-i-I C =|Rjm、1 )Ⅰ=IR+jXL+XC Z==R+jmL-j=R+j=Z∠q2§9-1 阻抗和导纳 * RLC串联电路 R L u C uL uC i + - + - + - + - uR R + - + - + - + - j L U  UR  . I UL  UC . jC 1 KVL： . . . . . . . 1 j j I C U UR UL UC RI LI  = + + = +  − I R X X I C R L L C   )] [ j( )] 1 = [ + j( − = + +   R X Z z C R L I U Z   = = +  − = + j =  1 j j  