mitsos
Well-known member
- Joined
- May 4, 2007
- Messages
- 2,886
That's about the voltages I'm looking at. +- 24 or so, +/-18 or so, +48 and maybe one more for LEDs, etc. My worry is that, if I cascade them as you describe, I'll be limited by the first regulator's max current (if I take the 2nd input from the output of the 1st). The way JLM does their 5-rail, they run the inputs of each regulator to the bridge and I think that, in my case, that would make my limit the rectifier limit (and trafo of course).
My problem with the LM338 as negative regulator is, can I run two (as negative regs) off one secondary/rectifier/ground? I'd have to tie both their outs to ground to be able to use them as negatives, that's what I'm not sure will work (well), and why I'm considering sticking to the 317/337 with extra transistor(s) for higher current. I just thought the 338 way would be simpler due to lower parts count...
My problem with the LM338 as negative regulator is, can I run two (as negative regs) off one secondary/rectifier/ground? I'd have to tie both their outs to ground to be able to use them as negatives, that's what I'm not sure will work (well), and why I'm considering sticking to the 317/337 with extra transistor(s) for higher current. I just thought the 338 way would be simpler due to lower parts count...