@Salas
about DN + LM317 CCS noise, are you familiar with "Sources_101_Letter_Revisit_0409.pdf" file?
It is too big to upload here.
about DN + LM317 CCS noise, are you familiar with "Sources_101_Letter_Revisit_0409.pdf" file?
It is too big to upload here.
Which issue of Audioxpress was this in?
I may have it, and would like to read more
about this.
There is one thing which I would like to know that what if the voltage is dropping substantially with bib. Like Consider the psu input voltage to the bib being 25V and the regulated level output from the bib is 18V and what if the voltage drops to 16V from the psu now the regulation doesnt happen beyond the reference but does the functionality of the bib will be shut down or does it work still providing 16V but does the noise performance will still be acceptable or it is as good or just slightly less than the one which is regulated.
Overall does the device gets shut down because of such drop. With the simulation what I found is that the voltage at the output of the reg is dropped and current is still being deliverd but what about the noise and impedance?
Overall does the device gets shut down because of such drop. With the simulation what I found is that the voltage at the output of the reg is dropped and current is still being deliverd but what about the noise and impedance?
The regulation will stop and the main CCS will quit its setting. Vout will be following Vin, current will keep passing just as the load pulls at this lowered rail plus few mA that some of the reg's minor branches will keep on pulling. In other words it will behave like some kind of a passthrough route.
It won't add detectable noise. Even less than when it was working. Zout will be about as much as R1 (the CCS setting resistor) for a large portion of the audio band before it will begin to taper off into something like one fifth to one tenth of its low frequencies initial value when in the ultrasound region and beyond.
It won't add detectable noise. Even less than when it was working. Zout will be about as much as R1 (the CCS setting resistor) for a large portion of the audio band before it will begin to taper off into something like one fifth to one tenth of its low frequencies initial value when in the ultrasound region and beyond.
Alright thank you very much salas. I have a doubt regarding the Ultrabib and Bib1.1 that its said that you need lower CCS to have lower output impedance. There were hot rods in bib 1.1s so how is it comparable to Ultrabib. Will there be any difference in Hot rod Ultrabib?
Probably yes. That design is surely on SSLV type but I do not remember it as one of my sketches. So I can't tell 100%
Hi Salas,
thank you for your reply, yes it's your's sketches but 10 years ago and it's work perfectly in your phono stage sinplistic njfet riaa and my preamp. Maxpou🙂
Attachments
I did not recognize it as directly mine because it looks different coming from your Eagle files, plus it has a couple of small additions. Mystery solved.
Yes you can replace your Q1 Q3 CCS Mosfets with IRF610 IRF9610 but the Q4 Q8 output ones must be IRF530 IRF9530.
Yes you can replace your Q1 Q3 CCS Mosfets with IRF610 IRF9610 but the Q4 Q8 output ones must be IRF530 IRF9530.
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