OK. Something for me to study in my copious amounts of free time. Maybe I always had this doubt in my mind when working on switching regulators. I'm about to design one from scratch for fun and this may come up and force me to study it again...You were a lot closer with this idea. The inductor CAN force flow out of a common point because energy was stored in the magnetic field of the inductor as the current ramped up when the switch was first closed. That makes the inductor act like a tiny generator or battery at the moment the switch opens. The energy is already in the magnetic package. That's what is trying to resolve to its quiescent state.
#12 and WBahn, thanks for the mental stimulation. I knew I'd never amount to much in the analog world. That's why I switched to software, process technology, and microprocessor design...
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