No, you don't (assume you have the output C on the sr board).
But the startup could be explained if you had.
Maybe there is an input cap on the USBridge?
Jan
But the startup could be explained if you had.
Maybe there is an input cap on the USBridge?
Jan
The start up is just the current demands for the Raspberry Pi processor starting up and loading software from the SD card I think
Jan,
Good morning!
I am going to have to claim ignorance here as I don't understand the question!!
Are you assuming I already have started with a Super Regulator project? I am just trying to understand if it makes sense to build one, so have not started anything yet
Rich
Good morning!
I am going to have to claim ignorance here as I don't understand the question!!
Are you assuming I already have started with a Super Regulator project? I am just trying to understand if it makes sense to build one, so have not started anything yet
Rich
I need a little bit help to connect Super Regulator in different situations. These positive and negative returns and DC in etc are for me always confusing.
1. When I have command ground and two separate diode bridges. How I connect negative regulator in this situation?
2. If the diode bridges are not sharing common ground then can I also use two positive regulator to make bipolar power + - supply?
3. I made a mistake and shorted positive regulator + and negative regulator - output together. Positive regulator is working but negative regulator is not anymore and a little bit small smoke came out. I was using after diode bridge also fuse before regulator. What to check first and replace to get this regulator working again? 😳
Thank you for helping out. 😊
1. When I have command ground and two separate diode bridges. How I connect negative regulator in this situation?
2. If the diode bridges are not sharing common ground then can I also use two positive regulator to make bipolar power + - supply?
3. I made a mistake and shorted positive regulator + and negative regulator - output together. Positive regulator is working but negative regulator is not anymore and a little bit small smoke came out. I was using after diode bridge also fuse before regulator. What to check first and replace to get this regulator working again? 😳
Thank you for helping out. 😊
The super regs I’m building is to be used in an audio preamp, and needs +15V/0/-15V for the buffers. I really would like to go ”all out” and follow the suggestion in “Superregs for your signal level projects”.
In order to get the two transformers in the previous post #3647: Can I use a centertap toroidal transformer, identifying the lead in the CT belonging to transformer output lead respectively? And then tie together “POS return“ and “Neg return”? Any other suggestions/recommendations??
Thanx Anton
In order to get the two transformers in the previous post #3647: Can I use a centertap toroidal transformer, identifying the lead in the CT belonging to transformer output lead respectively? And then tie together “POS return“ and “Neg return”? Any other suggestions/recommendations??
Thanx Anton
Sorry, an addendum to my post above #3649:
In “Superregs for your signal levels projects” it is recommended to
“use two completely separate windings, rectifiers and capacitors and connect each one to J1 and J5 respectively”.
Basically how/can I achieve this with an CT toroidal transformer? Can’t find single winding toroidal transformers.
/Anton
In “Superregs for your signal levels projects” it is recommended to
“use two completely separate windings, rectifiers and capacitors and connect each one to J1 and J5 respectively”.
Basically how/can I achieve this with an CT toroidal transformer? Can’t find single winding toroidal transformers.
/Anton
With a CT transformer and 4 diodes (or a bridge) you can make a pos voltage, the CT and a neg voltage. You can use these as inputs to a pair of SRs as shown in # 3647. But the best performance you get with two separated secondaries. Where did you look? There must be a ton out there.
Or use two small transformers.
How much voltage/current do you need from the SRs?
Jan
Or use two small transformers.
How much voltage/current do you need from the SRs?
Jan
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Finally found the single sec voltage transformers! Search on my computer it is a no show! BUT found the transformers searching using my wife’s computer with exact same search string. So I will go with two separated secondaries (2 single sec voltage transformers).
For the preamp I need 15V/0/-15V, about 200mA.
Is it better performance using 4 diodes and a capacitance multiplier with the SR?
/Anton
For the preamp I need 15V/0/-15V, about 200mA.
Is it better performance using 4 diodes and a capacitance multiplier with the SR?
/Anton
@fartblind
it says two separate windings... secondary windings, no?
these can be on the same transformer with a common primary.
it says two separate windings... secondary windings, no?
these can be on the same transformer with a common primary.
Back in 1995 Gary Galo drew up a supply with two separate secondary windings feeding the SRs.
Today we'd be using snubbers on the transformer secondaries.
Typically the "0" point would be at the circuit board in any event but it wasn't clear if Galo was relying on that to construct the +/0/- voltages. In other words would/ should the unregulated grounds of the output of this supply be tied together in this supply... and where.
As well one may be wanting a "signal ground" conductor to tie to a ground break device (bridge) as is suggested in several recent projects (Pearl phono stages for instance)
Today we'd be using snubbers on the transformer secondaries.
Typically the "0" point would be at the circuit board in any event but it wasn't clear if Galo was relying on that to construct the +/0/- voltages. In other words would/ should the unregulated grounds of the output of this supply be tied together in this supply... and where.
As well one may be wanting a "signal ground" conductor to tie to a ground break device (bridge) as is suggested in several recent projects (Pearl phono stages for instance)
Attachments
As a general rule, you would carry both the hot outputs as well as the individual grounds as far as possible to the powerd circuit, and connect the returns there.
You should avoid tying them at the rectifier/cap ground so you don't get ground loops that can cause hum and noise in the regulators. This is the basic principle, and why I put separate return grounds on the PCB so that the regulator can sense (and regulate) the voltage at the load point.
Any other method will degrade performance.
Use those ground returns on the diyaudiostore PCB!
Jan
You should avoid tying them at the rectifier/cap ground so you don't get ground loops that can cause hum and noise in the regulators. This is the basic principle, and why I put separate return grounds on the PCB so that the regulator can sense (and regulate) the voltage at the load point.
Any other method will degrade performance.
Use those ground returns on the diyaudiostore PCB!
Jan
Hello everyone,
I wanted to give you an update and also ask a question.
I am using a super regulator to power a 5V device that needs 500-600 mA in normal use but requires bursts of power (1.5A or more) on boot up (raspberry Pi loading software). The device is an aLLo USBridge Signature
I built a CRC power supply to feed the regulator 3000uF - 5R - 3000uF, and had to supply 13V DC to the regulator board to cope with the current demands on start up not dropping the supply voltage to the Super Regulator [SR] to allow it to boot successfully.
I purchased a Sjostrom SR01 ready built to get me going before I build a DIY module with selected components.
Now it's only 15 hrs old so not a lot of running in but I wanted to know if anyone has experience comparing this to retail options?
The reason I ask is that I had high hopes for the Sound quality improvements over my cheap iFi wall wart SMPS but I prefer this to my new super regulator by a sensible margin. If the margin was reversed I would be very happy with the project?
I know it's all subjective and system dependent but I would be interested to hear other views/
Rich
I wanted to give you an update and also ask a question.
I am using a super regulator to power a 5V device that needs 500-600 mA in normal use but requires bursts of power (1.5A or more) on boot up (raspberry Pi loading software). The device is an aLLo USBridge Signature
I built a CRC power supply to feed the regulator 3000uF - 5R - 3000uF, and had to supply 13V DC to the regulator board to cope with the current demands on start up not dropping the supply voltage to the Super Regulator [SR] to allow it to boot successfully.
I purchased a Sjostrom SR01 ready built to get me going before I build a DIY module with selected components.
Now it's only 15 hrs old so not a lot of running in but I wanted to know if anyone has experience comparing this to retail options?
The reason I ask is that I had high hopes for the Sound quality improvements over my cheap iFi wall wart SMPS but I prefer this to my new super regulator by a sensible margin. If the margin was reversed I would be very happy with the project?
I know it's all subjective and system dependent but I would be interested to hear other views/
Rich
The fact that you prefer one over the other doesn't mean one is 'better' than the other.
What would constitute 'better'?
Or you can make the case that whatever you prefer is 'better' for you by definition.
Jan
What would constitute 'better'?
Or you can make the case that whatever you prefer is 'better' for you by definition.
Jan
Jan,
I appreciate that sound quality is subjective but for my endeavours this is the only objective and criterion for preference - to my ears, in my system to my prejudices, biases and taste!
Better for me is I prefer to listen to this over that, I enjoy listening to music more with this choice. That's it 😀
Now if you look at the other 'measurably better', like the review here you directed me to (thanks!) then I appreciate measurements are somewhat helpful to improve the subjective outcome and the overall listening impressions of a group has a level of consensus of 'audibly better'.
If I look at the subjective outcome of the review then the Jung/Didden(you!) comes out at No.1 and Sjostrom is pretty close, and was available ready built.
So I though great let's make this work with a ready assembled board at 5V and find out if it's worth the effort of building one myself to put in the place of the SR01.
I used a nice transformer, my preference for diodes and a series resistor I also like and made the prototype, however to my surprise at the moment I prefer an old wall-wart, which was not what I anticipated - hence the question to see if by some strange set of circumstances I am missing something.
e.g. 13V will spoil the stability of the circuit and make it sound worse.
e.g. You will need to wait for everything to burn in a lot longer
e.g. How have you connected the sensing circuit? You need to make sure you have not created an Ariel
etc.
I have made non regulated supplies for my hi-fi and got (sort of) predictable sound quality results, but I have no experience of regulated circuis.
As always thanks for the support,
Rich
I appreciate that sound quality is subjective but for my endeavours this is the only objective and criterion for preference - to my ears, in my system to my prejudices, biases and taste!
Better for me is I prefer to listen to this over that, I enjoy listening to music more with this choice. That's it 😀
Now if you look at the other 'measurably better', like the review here you directed me to (thanks!) then I appreciate measurements are somewhat helpful to improve the subjective outcome and the overall listening impressions of a group has a level of consensus of 'audibly better'.
If I look at the subjective outcome of the review then the Jung/Didden(you!) comes out at No.1 and Sjostrom is pretty close, and was available ready built.
So I though great let's make this work with a ready assembled board at 5V and find out if it's worth the effort of building one myself to put in the place of the SR01.
I used a nice transformer, my preference for diodes and a series resistor I also like and made the prototype, however to my surprise at the moment I prefer an old wall-wart, which was not what I anticipated - hence the question to see if by some strange set of circumstances I am missing something.
e.g. 13V will spoil the stability of the circuit and make it sound worse.
e.g. You will need to wait for everything to burn in a lot longer
e.g. How have you connected the sensing circuit? You need to make sure you have not created an Ariel
etc.
I have made non regulated supplies for my hi-fi and got (sort of) predictable sound quality results, but I have no experience of regulated circuis.
As always thanks for the support,
Rich
Attachments
Rich, you like what you like.
It is entirely possible that what you like has worse technical performance.
So it is no use to improve the technical performance because chances are that you don't like that outcome.
Enjoy your music!
Jan
It is entirely possible that what you like has worse technical performance.
So it is no use to improve the technical performance because chances are that you don't like that outcome.
Enjoy your music!
Jan
Jan,
Thanks again for the quick reply
I started off life as a professional engineer in the plastics and automotive industry and also spent many years a while back in my career as an academic also consulting on a lot of very technical challenges for the aerospace industry so I am not against measurements, or technical performance 🙂 as an objective.
I also believe there is a correlation from measurements to subjective outcome, but it's not easy/linear/simple in many cases. Valve audio being one good example!
I also believe that most people share a sort of reasonable consensus on what constitutes good sound quality, and that I am not strangely outside the curve on this.
I know the Super Regulator gets good reviews/feedback on sound quality, which is what I understood it's design objective was in the first place? I did not make this prototype to improve the technical performance, nor am I competent to measure it.
Hence my desire to get some feedback on the subjective audio performance, or on a layman's (me!) error on a technical issue, resulting in an audible outcome
Rich
Thanks again for the quick reply
I started off life as a professional engineer in the plastics and automotive industry and also spent many years a while back in my career as an academic also consulting on a lot of very technical challenges for the aerospace industry so I am not against measurements, or technical performance 🙂 as an objective.
I also believe there is a correlation from measurements to subjective outcome, but it's not easy/linear/simple in many cases. Valve audio being one good example!
I also believe that most people share a sort of reasonable consensus on what constitutes good sound quality, and that I am not strangely outside the curve on this.
I know the Super Regulator gets good reviews/feedback on sound quality, which is what I understood it's design objective was in the first place? I did not make this prototype to improve the technical performance, nor am I competent to measure it.
Hence my desire to get some feedback on the subjective audio performance, or on a layman's (me!) error on a technical issue, resulting in an audible outcome
Rich