Hi, You can find a tutorial on how to make a signal injection transformer for testing DC/DC converter gain-phase with the FRA utility via the below link. http://www.simprojects.nl/images/DIY_signal_injection_transformer.pdf The tutorial describes the basic transformer requirements and the materials ...

Hi, I have uploaded a PDF file to my website which shows details on how I did several gain-phase measurements using the PicoScope FRA utility on a buck converter prototype . You can download the file via below link: http://www.simprojects.nl/images/Gain_Phase_measurements.pdf I will post more info o...

Hi Aaron, I have done more testing and generated a report showing your FRA performance vs Bode-100, and details on stimulus vs frequency in stable and unstable converters. I also included some data on a DIY insertion transformer with quite good response. The report is a PDF of 2MB size, but I cannot...

~trying again to post a reply~ Thanks a lot for all the explanation Aaron! I’ll take some time to let it all sink in… “Noise reject timebase (noise reject mode): Sets the scope’s fixed sampling rate for all noise reject mode sampling. This value should be high enough to avoid aliasing-in noise. The ...

Hi Aaron, Your FRA utility makes Picoscope a really versatile tool! The fact that you can easily switch between scope and FRA also makes signal checks and level adjustment very handy. I'm an FAE for power semiconductors and was planning to make a practical youtube tutorial video on gain-phase measur...