You probably mean low voltage, not SSHV. What are the conditions of measurement, what those charts represent? You capacitor coupled the DC and fed an FFT, or is it the noise floor of some audio circuit supplied by such a reg?
Yes! Salas low shunt, I mesuare at 5 v and 3.3V
I see Bd140 it the best ad 3.3v, better than Mje350
That is macsin for measure!
Attachments
I recommended BD140, I know. My questions were about the method of measuring not what was measured. What your charts represent? Noise floor of the card on top chart, and AC coupled noise floor of the regs outputs below? Also what kind of current you run for the tests, because I see no sinks.
Through my sound meter directly to Cad D404 SShv low with computer software, with a total load 66ma! Partly because of noise measurement instruments, the Vietnamese called the * Ù nền* - noise of machine I do not know this world by English !
Special Bd140 at 3.3 V is very good, better in 5 v. distributed by a noise meter is also involved (ù nền) Ground noise may be it is)
I do not know how to describe you understand the difficult hard too!
I do not know how to describe you understand the difficult hard too!
Regulators for the Classic Pass Labs D1 with an ESS Dac
@Salas
Please for the new Classic Pass Labs D1 with an ESS Dac we need your design for Vin 60V & Vout 50V / 250mA could you help us?
@Salas
Please for the new Classic Pass Labs D1 with an ESS Dac we need your design for Vin 60V & Vout 50V / 250mA could you help us?
As I said before can not connect the sense with the force, you must added 2 holes for sense output + & -
Sorry Salas, don't need help because I see in the last schematic the Vout +-45 like the regs I'm using in my Simplistic NJFET phono RIAA only have to change for the negative rail the mosfet to IRFP140 & BC556B, finally will be two +-45Vout & one +5Vout
I know this has been answered before, but, this thread is pretty long...
The sense wire; it is coax, and the ground screen is attached at the shunt board, is it also attached at the load end as well?
Thanks
Ken
The sense wire; it is coax, and the ground screen is attached at the shunt board, is it also attached at the load end as well?
Thanks
Ken
mravlaca:
In a quick look seems OK, though the 47R is supposed to go near the Q3's base. Keep it near the SQB since you did not opt for remote sensing 4 wire arrangement as in the CCT you referred to.
In a quick look seems OK, though the 47R is supposed to go near the Q3's base. Keep it near the SQB since you did not opt for remote sensing 4 wire arrangement as in the CCT you referred to.
Coax or twisted, the ground side is attached on sense pcb ground and at load ground. Pcb sense connections meet force connections only at the load.
I imagine Mr. Salas years from now, in his 70s, slowly walking up mount Athos, and this young guy running behind him: "Mr. Salas! Mr. Salaaaas! How do I set the idle current? ... and what about those sense wires?" 😀
We've all been there. I reminded myself of my 4 year old at times. "Mr Salaas! Sorry to bother you again, but I have a list of questions for you:"
🙂
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