Hi all,
I am interested in doing some pre-compliance testing to IEC61000-4-5 in order to compare the robustness of a few different component selections in a mains circuit. I expect I may need to pay a test lab to do this since even second-hand, the usual (Hafely etc.) testers are quite expensive.
Just out of curiosity I started looking at what would be involved in building one of these testers, for example being adjustable up to the "4kV" test level (though a simpler version going up to 2kV might still be useful and much easier to build). The following document derives one set of component values that would create a surge complying with the specification in the standard:
So it requires a pulse-rated 6uF capacitor that can be charged up to 4kV (ok, expensive but available), and then a switch that can turn on in