So the developing is progressing. This time I tested the first PCB prototype of my enhanced “Swenson” regulator which I baptised Swenson+. It’s a great circuit and performs really well. Although component selection and track cree page and clearance is for about 1kV, I think it should safely operate at least to 800V. Not really thinking to use it at those voltage levels, but rather as phono stage supply instead, which requires much lower voltages.
As usual the focus of the PCB is to provide as much flexibility in component selection (SMD and TH) as well as use cases.
Still some layout refining and further testing but so far so good! Here is a taster which shows at least 60dB rejection of the incoming power supply noise which wipes out all rectified-related harmonics (100Hz etc). The 100dB 50Hz and byproducts is likely to come from my workbench:
More to come soon (hopefully)