In fact, I am doing a basic electronic experiment about the loop gain and phase margin of the Buck/Boost converter to understand the phase boundary and gain boundary of the compensation circuit. Before that, I must have a network analyzer or an oscilloscope with FRA function and a set of Injection Transformers. It is too time-consuming to measure one by one.

The picture is a measurement picture of a 1:1 transformer with a VAC core and an unstable network analyzer.

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