The current in J2 directly sets Vo, so if there is any drift there the Vo moves around. What you circuit does is keep the voltage between Vo and the top of J2 constant. That's not what you want.
Jan
I don't think this uses feedback; it is an emitter follower (also sometimes called capacitance multiplier) and not a regulator as their is no feedback from the output to stabilize it.
Jan
> 5 milliohm with 13.4mA is about 70uV. You probably can't see that on your DMM ...
5mOhm comes from the simulation, not measurement, it is what I said: it's so small so I can't see the difference in the voltage meter and thank you for the input I am familiar with Ohm's law 🙂 what I am not sure is if replacing the bjt with mosfet here like that is a good approach
5mOhm comes from the simulation, not measurement, it is what I said: it's so small so I can't see the difference in the voltage meter and thank you for the input I am familiar with Ohm's law 🙂 what I am not sure is if replacing the bjt with mosfet here like that is a good approach