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TL431 linear power supply
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spec:
Here we go again. Another smart arse pops out of the woodwork.

As I have said before to others, lets see your complete circuit for this application. :-//
spec:
mike-mike

I have updated the schematic for version 6 of the PSU attached to reply #89: nothing major just added a 100k resistor to the pot wiper.

Keep an eye on reply #89 because I will update that as necessary.
iMo:
Also add a 10uF/16V from LM317's ADJ pin to GND (noise reduction).
spec:

--- Quote from: imo on December 19, 2018, 10:23:48 am ---Also add a 10uF/16V from LM317's ADJ pin to GND (noise reduction).

--- End quote ---
I also considered that but decided there was no need. Take a look at the many posts on this thread to get a feel for the background to this power supply project. Still, at least you haven't started  banging on about how slugged the opamp is at this stage.  :)
iMo:
You have done a nice LTSpice simulation above - you may try with say 15V output, switching from 10mA -> 5A -> 10mA output current (with, say, 200ms period and 10us edges) and adjust the loop when required..
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