Changing output voltage

[Mooly]

Notice even the partial brochure you copypasted twice, on posts #27 and #28 tells you to
measure the power you need

As of:

please be aware that a sensible answer will also include a warning about very probable and real problems, call it side effects if you will, created by what you want to do; in this case changing output voltage.

Said side effects may be dangerous on not, fully depending on current consumption, hence our demand for clarification.

Urghh, that looks weird on a dark theme 😉 Just sayin'...

 

[WhiteDragon]

If you only knew the Power of the Dark Side

 

[JMFahey]

Oh, just advice given in god faith and with the best of intentions.

"Opinion/taste"? .... everybody has his own.

But here there is the very distinct possibility or overheating or damaging the regulated PSU if regulated for a different voltage.

Or to make output voltage dirty, unregulated or directly unusable when the 6+6V transformer was mentioned (by the OP no less) because regulator would not have enough voltage difference to do its job.

Say not being able to provide more than 3 or 4 V out 😱
Which I resumed in the word "catastrophic".

I also read other threads on the subject, in a couple load mentioned was 0.065A or so (presumably some simple Preamp?) ... easy peasy.

But here an SSD was mentioned , in fact

my SSD (and the related USB to SATA Bridge unit, of course) connected to my Digital Transport

.... and only in post #23!!!!!!

Now we are talking

While buying your SSD, you can easily check its voltage and current and then multiply it to get the total amount of power requirements in watts.


You will see most of the SSDs demanding voltage between 4.5 to 5 volts. And, they all will also demand the current between 1 to 2 Ampere.

😱

Up to 30 times higher than originally implicit or expected.

Also: the "Digital Transport", a simplified CD player, again only mentioned in post #23, has a power consumption, depending on model, of:

Won´t even search for "USB to SATA bridge" unit because those loads mentioned above are already enough to bring that PSU to its knees.

 

[Logon]

Oh, just advice given in god faith and with the best of intentions.

"Opinion/taste"? .... everybody has his own.

But here there is the very distinct possibility or overheating or damaging the regulated PSU if regulated for a different voltage.

Or to make output voltage dirty, unregulated or directly unusable when the 6+6V transformer was mentioned (by the OP no less) because regulator would not have enough voltage difference to do its job.

Say not being able to provide more than 3 or 4 V out 😱
Which I resumed in the word "catastrophic".

I also read other threads on the subject, in a couple load mentioned was 0.065A or so (presumably some simple Preamp?) ... easy peasy.

But here an SSD was mentioned , in fact .... and only in post #23!!!!!!

Now we are talking 😱

Up to 30 times higher than originally implicit or expected.

Also: the "Digital Transport", a simplified CD player, again only mentioned in post #23, has a power consumption, depending on model, of:

Won´t even search for "USB to SATA bridge" unit because those loads mentioned above are already enough to bring that PSU to its knees.

Dear JMFahey,

I highly respect your person, your knowledge and the fact that from so many years you committ yourself to transfer your knowledge in order to help others.
Thank you very myuch!

Furthermore, I honestly appreciate all your efforts in this thread, but I kindly ask you to sporty accept the fact that this topic has already been solved despite your help and to try to refrain to over-posting again (otherwise it would seem that you only posting to try to denigrate me) since, I'm truly sorry to tell you, your appreciated calculations in this thread are no longer needed.
Please.


This topic was solved by:

I would unbridge the H and M links and bridge the L link. That seems logical.
Depending on the amount of current you take off, the xformer/rectifier etc may get a bit hot and you might need a different xfrmer, but I would just try it out and keep an eye (or finger) on the temp.
But your supply seems perfectly usuable, no need to spend money on yet another one.

Jan

and

There is an existing thread on this board. It has info on the L/M/H resistors.
https://www.diyaudio.com/community/...lator-based-on-studer-900.297610/post-5716864
https://www.diyaudio.com/community/...lator-based-on-studer-900.297610/post-5716958

So L resistor should be about 3k for 5V output.

Dot.

JFYI please note again that - as said - I'm ALREADY feeding both my SSD and my USB to SATA Bridge with a different and cheaper 5VDC 1.5A linear power supply unit that anyway does perfectly its work, but - as said - I would like to REPLACE it with this one in topic just to possibly DISCOVER if thanks to best design of the latter I could notice improvements in sound quality.

The end.

The topic is definitely solved, okay?

Many thanks for your (and everyone) really very appreciated participation.

 

[jean-paul]

All is good but please remember: P = U x I

Always

 

[Logon]

. . .

I highly respect your person, your knowledge and the fact that from so many years you committ yourself to transfer your knowledge in order to help others.

. . .

Dear jean-paul,

Quoted words are also worth for you.

Thank you very much!