How to kill your LDO

extends http://chpsndtch.blogspot.com.ee/2015/05/two-random-voltage-regulators-practical.html , http://chpsndtch.blogspot.com.ee/2015/04/regulator-redesign-lab-as-always.html

Getting some numbers . . .

a quick fix + improved zener
(*update :: i used in practice a darlington - not the super ß - "power switch" - this cfg. seems to have a better supply-/load rejection than below ↓↓)

insane . . . improving Vs rejection + "digital" current limit

"back to analog" -- adding batteries . . .
 (*update :: see above ↑↑)

(hope idon't uploadthis2wce) -- a fold-back sc current Lim.

[EoP]

another CMOS 32k osc.

. . . a lot of head ace to get to this in simulation (i wonder how the "textbooks" promote such a big number of the simplified versions of that kind of oscillator - some of which actually even simulate but with insufficient output amplitude ??? ...  ,  near/above 1MHz X-tals likely have lesser issues)

the src.

[EoP]