Carl is currently putting together an update of his overview of class-D amplifier patents, plus work on a variety of topics related to designing electronic devices and equipment outside the structure of large corporations - e.g. open source or low cost software and hardware, important resources, vendors etc.

Sorry this may be a little longer in coming.  In the meantime, I have reposted my original compendium of switching amp patents on the archived acutechnology site.

Meanwhile, Carl’s CV is online, and he is available via LinkedIn

Power Matters is Carl Sawtell’s Blog