View attachment 673980
My only concerns is that it uses feedback and I am not sure how it can impact the sound.
Alternatively I will use this:
View attachment 673981
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
in the meanwhile...
I have replaced BJT with MOSFET, the output impedance is really small, I have replaced 2sk170BL with 2sk117GR (Idss around 4mA), the output voltage drift is much smaller.
I can't see any difference in output voltage with my voltage meter when I add 22.4k load, 13.4mA, 4W
5 milliohm with 13.4mA is about 70uV. You probably can't see that on your DMM ...
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
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