As you know, I already made several ubib sources and they are wonderful, the sound of the dac improved a lot and I am very satisfied, the consumption of each channel of the dac is only 70mA and I put one ubib for each one, the noise levels are very good, much better than with other types of sources that I had experienced. But it is true that when I did tests with ubib with larger currents the noise was worse.
Larger currents usually want larger R9 value for same stability as in lower currents. So try 1k.
But for other applications with more current needs of 3A or more, I'm interested in L-adapter, I don't care that it has worse noise than ubib.
I have already seen the L-adapter schematic, I see something simple, a ccs with led voltage reference and an "outboard" transistor to add current. Do you think it will be better for noise than a commercial three-terminal regulator?
For this circuit, LEDs blue is good for reference voltage, or is better standar LEDs green or red?
I have already seen the L-adapter schematic, I see something simple, a ccs with led voltage reference and an "outboard" transistor to add current. Do you think it will be better for noise than a commercial three-terminal regulator?
For this circuit, LEDs blue is good for reference voltage, or is better standar LEDs green or red?
Blue are among the noisiest LEDS so keep with Red or Green. Users subjective feedback says its better than traditional three leg power regs.
Have you been using IRF510 M2 even for higher current? If yes try the original BOM's IRF530 with higher value R9.
Then it should have no sweat with a NUC7 with a 10W tdp J4005 that I plan to use for REW, MiniDSP and Roon. Feed it 19 V?
As pre-reg and source follower Mosfet output rail I suppose. Should be good for that. Let us know.
Salas I use M2 IRF530 with R9 470 ohms, isn't good for high currents like 600mA? or have I to change R9 for 1K in place of 470 ohms keeping the IRF530? or have to change both M2 IRF510 & R9 1K?