Switch-Mode Supplies Revealed: Elegant designs from China

摘要

The switch-mode power supply chosen by the author for this article is built without the use of special-purpose ICs and so can be completely 'reverse engineered'. We make some surprising discoveries as, step by step, we find out how the unknown designers managed to make such an effective circuit using just a few low-cost components. We can even apply the lessons learned to our own designs.