How many integrated circuits do you need to build up a power supply that’ll convert mains AC into a stable DC voltage? Would you believe, none? We just watched this video by [The Current Source ...

has announced a new line of power ... Zero cases that all focus on a minimalistic design. While MSI didn't tell me what components are inside the Project Zero X, I could summarize the build ...

From there, zero-crossing detection is added to limit inrush surge currents, and the final design uses the venerable 555 timer to build a switching power supply. Although it is noted several times ...