This is my first thread in diyaudio, so greetings to everybody from a newcomer.
It was a while ago when I saw something somewhere about an idea to use 3-phase supply as input to get 1-phase stabilized output to feed audio equipment. It was said to have some advantages over traditional 1-phase-in-1-phase out solution.
Now I am trying to find this information in the net, but somehow it seems to be avoiding me. Or perhaps I was dreaming? Or maybe
?
Could anyone tell that either there is such a thing (and where I can find some information including schematics), or I should see a doctor
Many thanks for attention!
It was a while ago when I saw something somewhere about an idea to use 3-phase supply as input to get 1-phase stabilized output to feed audio equipment. It was said to have some advantages over traditional 1-phase-in-1-phase out solution.
Now I am trying to find this information in the net, but somehow it seems to be avoiding me. Or perhaps I was dreaming? Or maybe
?Could anyone tell that either there is such a thing (and where I can find some information including schematics), or I should see a doctor
Many thanks for attention!
Hi,
I cannot see why there should be an advantage to using two of the three phases or all three phases to generate a single phase output.
Transformers from 400Vac to normal output voltages are available that work off two phases but these are not normally brought into the home.
You usually only see then inside equipment that is already three phase.
How would you connect safely to a 400Vac supply?
Those big Blue industrial plugs and sockets would look really nice in a modern home.
I cannot see why there should be an advantage to using two of the three phases or all three phases to generate a single phase output.
Transformers from 400Vac to normal output voltages are available that work off two phases but these are not normally brought into the home.
You usually only see then inside equipment that is already three phase.
How would you connect safely to a 400Vac supply?
Those big Blue industrial plugs and sockets would look really nice in a modern home.
I wonder if it's a question of using a 3-phase transformer to get the correct AC voltages, and then rectify the resulting 3-phase. That way the peaks will be 60 degrees apart, rather than the 180 you get from a single phase signal. Much easier to smooth.
Hi (Hej) runebivrin,
Yes, and in addition to that, regeneration of a single phase.
(At least my interpretation of Only You's post.)
It would then be possible to have one really high current phase out from three phases.
Yes, and in addition to that, regeneration of a single phase.
(At least my interpretation of Only You's post.)
It would then be possible to have one really high current phase out from three phases.
Possibly. The original post is vague enough to be interpreted in many different ways. The only reason I can see why you'd want to regenerate single phase from 3-phase is if you have a turntable with a synchronuos motor, and you don't trust the stability of the mains. And still, it would have to be a rather beefy motor to warrant 3-phase supply in the first place.4fun said:
AndrewT said:Those big Blue industrial plugs and sockets would look really nice in a modern home.
Blue is 160-250V. You need red. 😉
Hi Pinky,
I should have gone out to the workshop to check first. Thanks for keeping us right.
Has anyone seen a three phase toroid?
Maybe we have to use three legged EI transformers?
What else does?
I should have gone out to the workshop to check first. Thanks for keeping us right.
Has anyone seen a three phase toroid?
Maybe we have to use three legged EI transformers?
What else does?
Hi,
Yep.. 😉
AndrewT said:
Yep.. 😉
An externally hosted image should be here but it was not working when we last tested it.
4fun said:
If all he's interested in is higher power single phase then the simplest solution would be nothing more than a Scott-T transformer. Single phase output reflecting back a balance three phase load.
Cheers, Mark
Hi guys, many thanks for replies.
The problem is that when I saw that information I did not need it so I did not pay much attention to the details. But as far as I can recall the above quote posted by runebivrin is the idea behind it - to make it smoother.
runebivrin said:
The problem is that when I saw that information I did not need it so I did not pay much attention to the details. But as far as I can recall the above quote posted by runebivrin is the idea behind it - to make it smoother.
3 Phase smoothing
I would tend to agree that if all 3 phases are rectified you'll probably seem some benefit since the phases are 60deg. apart as the other poster mentioned above.
Using a single phase of a 3 phase system will only result in an inefficient use of magnetics.
I would tend to agree that if all 3 phases are rectified you'll probably seem some benefit since the phases are 60deg. apart as the other poster mentioned above.
Using a single phase of a 3 phase system will only result in an inefficient use of magnetics.
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