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I moved away from SS devices
Posted by Mark Kelly on May 1, 2007 at 21:18:27:
The original circuits used fairly high spec SS devices (LT108X series regs). With the 71As I moved from there to series / shunt regulation using discrete devices, from there to SLA batteries and from there to SLA batteries plus chokes. I felt that each step was a worthwhile improvement. With the 211s I'm in the process of jumping straight from first to last.
I tried SS current reg but didn't like it, YMMV etc etc.