On Tuesday, February 26, 2013 11:47:54 AM UTC, Arfa Daily wrote:

Has anyone seen any good write-ups on, or figured out for themselves,
just
how the self-oscillating dirty - i.e. smoothing cap-less - switchers
that
you find in use as lamp ballasts (or 'electronic transformers' that they
seem to be sometimes known as) work ?

There are various step down switcher topologies, I don't see how we could know which is in use there. I guess you don't have the space to slot in a complete halogen lamp ballast.


NT