Thank you hexamer for your answer! Those results look great! Because I'm quite new to this topic I wanted to ask you, if the impedance of your injection transformer VB-1BB with 75 Ohms is no problem, because all the signal generators and oscilloscopes have 50 Ohm outputs/inputs? Is there a need of a...

Hello hexamer,

did you tried already to measure the feedback loop stability of a switching power supply?

Kind regards
kally