结果表明，用本文提出的信号流图法，可非常方便地求得有源scf的传递特性。
The results show that it is very convenient to find the transfer function of the active SCF by means of the signal-flow graph approach.
本文把信号流图法推广到解直流开关电源电路、提出了作开关电源电路PWM开关信号流图的方法。
The signal flowgraph method is extended to ihe analysis of switching Dc-To-Dc-converters and the PWM signal switches emerging in the flowgraph are linearized.
第二节讨论用对立源法作信号流图，这是此方法的又一个用途；
To plot signal flow diagrams by the opposite source method, which is the another use, is described in the second section.
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