Because of the sonic and measurable advantages of a choke input filter.
Check this article: RR#002 - DC Filament Supply Test
Check this article: RR#002 - DC Filament Supply Test
what if we want to get 3.3V. I agree the Reflektor D will work for such low voltage but is there a way to use mosfet instead of BJT for the shunt for the 3.3V.
salas what is the actual ripple observed at the output? I read on other page that the noise levels are very low as much as 30nV/SqHz. How much is this in just nV? at may be 1Khz or 20KHz?
No, there is no PMOS with low enough Vgs threshold to use in the BIB that I have successfully tested to recommend. 3.3V BIB calls for BJT output version only.
I could not measure any 100Hz ripple with the average bench equipment I got.
Lately my Linn Linto PSU for my Linn LP12 TT is doing noise at the start up during several seconds, worth the effort to change the LM317 & LM337 regulators, attached schematic?
That diode gets much hot and dries the joint during the years? Maybe replace it with a fatter one for peace of mind?
salas can we power the dac where if the quiescent current consumption is about 180ma so can we ues 280 or 300ma as CSS?
How did u measure it which hardware and software was used?
Is the noise as low as 20 nano volt?
Salas can we bypass the Vref with 10nF film cap with 1000uF electrolytic? Will there be any advantages of using such low value bypass cap?
As long as 1000uF is there as main Vref filtering you can bypass it with 10nF or whatever you want. Technically its not a problem. Just try to keep it short legged. Subjectively you decide about it in your application and system. In our old trials bypassing that capacitor the opinions were inconclusive.
Salas there is one thing which is bothering me regarding the 3.3V output for the Reflektor D output and the Bib.
As mentioned in the earlier post that for low voltage operation the Bib needs transistor at the output and in some other threads its mentioned as using BJT will give lower output impedance > Im not sure output this.
But when it comes to 3.3V output some forum members have mentioned that using Reflektor D resulted in some recessed highs.
I like the sound of the Bib but using 3.3V for the digital section of the DAC which one is better?
Reflektor D or Bib?
What is soo unique of reflektor D when Bib can actually Do the 3.3V?
in other words what made you think about Reflector D concept?
As mentioned in the earlier post that for low voltage operation the Bib needs transistor at the output and in some other threads its mentioned as using BJT will give lower output impedance > Im not sure output this.
But when it comes to 3.3V output some forum members have mentioned that using Reflektor D resulted in some recessed highs.
I like the sound of the Bib but using 3.3V for the digital section of the DAC which one is better?
Reflektor D or Bib?
What is soo unique of reflektor D when Bib can actually Do the 3.3V?
in other words what made you think about Reflector D concept?
BJT will give the graph that is included in the BIB manual for BJT.
How do they use that REF-D ? With 1K R6 or with a JFET in its place? R6 will give impedance more like the BJT BIB. JFET will give more punch.
For the concepts history see back through their first page links, because it would take too many words to recap right now
How do they use that REF-D ? With 1K R6 or with a JFET in its place? R6 will give impedance more like the BJT BIB. JFET will give more punch.
For the concepts history see back through their first page links, because it would take too many words to recap right now
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