包含的文件有：
acdc.m, bridge.m, fullwave.m, hwrll.m, rc.m, sprec.m, thanks.m, thanks1.m, tphase.m, rectifier.m, rl_load.m, power_electronics.m, thanks4.m, converter.m, test.m, thanks5.m, insert.m, thanks6.m, graphics2.m, graphics3.m, ac_controller.m, controller1.m, controller2.m, controller3.m, graphics.m, graphics1.m, controllerb.mat, repeat.m