Isolated, regulated, toroidal step down transformer AC power supply design.

Discussion in 'Hobby Electronics' started by Mark, Mar 26, 2007.

  1. Mark

    Mark Guest

    Can anybody point me to a good design of same.

    240 VAC in, 9 VAC out.
     
    Mark, Mar 26, 2007
    #1
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  2. Mark

    Phil Allison Guest

    "Mark"

    > Can anybody point me to a good design of same.
    >
    > 240 VAC in, 9 VAC out.



    ** Huh ?

    What gobbledegook is this ?





    ....... Phil
     
    Phil Allison, Mar 26, 2007
    #2
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  3. Mark

    Mike Guest

    In article <4607c3d8$0$68247$>, says...
    >
    >Can anybody point me to a good design of same.
    >
    >240 VAC in, 9 VAC out.


    The closest thing in terms of a transformer that will be able to
    provide 'some' regulation is a ferroresonant one. They were often
    used 20 or more years ago but declined more quickly when the UPS
    became cheaper.

    The yare good at supply regulation but bad for noise and bad for
    waveform distortion.

    You dont really want to design a ferroresonant in a toroid unless
    you want to spend a few weeks getting to grips with the material
    properties and all the magnetics calculations and building many
    prototypes.

    Far better you just get a good SMPS.

    But do you really need 9vac for your application or is that to feed
    something else that could utilse DC more efficiently ?

    or did phil write this so i can practice typing and get even more proficient ;)


    --
    Regards
    Mike
    * VK/VL Commodore FuseRails that wont warp or melt with fuse failure indication
    and now with auto 10-15 min timer for engine illumination option.
    * VN, VP, VR Models with relay holder in progress.
    * Twin Tyres to suit most sedans, trikes and motorcycle sidecars
    http://niche.iinet.net.au
     
    Mike, Mar 26, 2007
    #3
  4. "Mark" <> wrote in message
    news:4607c3d8$0$68247$...
    > Can anybody point me to a good design of same.
    >
    > 240 VAC in, 9 VAC out.


    **Why don't you tell us what you are trying to actually do, rather than
    telling us what you think you need?

    As you may have guessed, your request is difficult to satisfy.

    At a minimum, you need to tell us:

    * AC or DC
    * Maximum and minimum current requirements.


    --
    Trevor Wilson
    www.rageaudio.com.au



    --
    Posted via a free Usenet account from http://www.teranews.com
     
    Trevor Wilson, Mar 26, 2007
    #4
  5. Mark

    Mr.T Guest

    "Rudolf" <> wrote in message
    news:...
    >> "Mark" <> wrote in message

    > news:4607c3d8$0$68247$...
    > > Can anybody point me to a good design of same.
    > >
    > > 240 VAC in, 9 VAC out.


    > Uni assignment?


    Sounds more like primary school :)

    MrT.
     
    Mr.T, Mar 27, 2007
    #5
  6. Mark

    jasen Guest

    On 2007-03-27, Mr.T <MrT@home> wrote:

    > "Rudolf" <> wrote in message
    > news:...
    >>> "Mark" <> wrote in message

    >> news:4607c3d8$0$68247$...
    >> > Can anybody point me to a good design of same.
    >> >
    >> > 240 VAC in, 9 VAC out.

    >
    >> Uni assignment?

    >
    > Sounds more like primary school :)


    He wants a transformer that regulates.

    --

    Bye.
    Jasen
     
    jasen, Mar 27, 2007
    #6
  7. Mark

    Mark Guest

    I am trying to build a 240 VAC in (or even 110 VAC in, I really don't care)
    9 VAC out, regulated (to 9 VAC) , isolated (from transformer), step down
    transformer and AC power supply.

    Input fused (at about 2 amps) but I could adapt just about any design to
    about that current.

    There...but I think I already said it, didn't I ..Let's see?


    "Trevor Wilson" <> wrote in message
    news:46082321$0$16301$...
    >
    > "Mark" <> wrote in message
    > news:4607c3d8$0$68247$...
    >> Can anybody point me to a good design of same.


    .... yes, thats me.

    >>
    >> 240 VAC in, 9 VAC out.


    .......ah, I did.

    >
    > **Why don't you tell us what you are trying to actually do, rather than
    > telling us what you think you need?
    >
    > As you may have guessed, your request is difficult to satisfy.
    >
    > At a minimum, you need to tell us:
    >
    > * AC or DC
    > * Maximum and minimum current requirements.
    >
    >
    > --
    > Trevor Wilson
    > www.rageaudio.com.au
    >
    >
    >
    > --
    > Posted via a free Usenet account from http://www.teranews.com
    >
     
    Mark, Mar 27, 2007
    #7
  8. Mark

    Phil Allison Guest

    PISS OFF TROLL !!!!!!!!!!!!!

    "Mark"


    ** BEWARE: Top posting fuckwit on loose !!



    > I am trying to build a 240 VAC in (or even 110 VAC in, I really don't
    > care) 9 VAC out, regulated (to 9 VAC) , isolated (from transformer), step
    > down transformer and AC power supply.



    ** Seeing as you are a COLOSSAL FUCKING MORON with ZERO

    ability to provide a intelligent specification

    - just what the **** s the application - eh ???


    > Input fused (at about 2 amps) but I could adapt just about any design to
    > about that current.



    ** Err - is that 2 amps AC at 240 volts or 120 volts - FUCKWIT ??



    > There...but I think I already said it, didn't I ..Let's see?



    ** This UTTER ASS is either on an overdose of mild altering drugs

    - or damn well needs to be.


    PISS OFF TROLL !!!!!!!!!!




    ........ Phil
     
    Phil Allison, Mar 27, 2007
    #8
  9. Mark

    James Guest

    "Mark" <> wrote in message
    news:46090d62$0$24861$...
    >I am trying to build a 240 VAC in (or even 110 VAC in, I really don't care)
    >9 VAC out, regulated (to 9 VAC) , isolated (from transformer), step down
    >transformer and AC power supply.
    >
    > Input fused (at about 2 amps) but I could adapt just about any design to
    > about that current.
    >
    > There...but I think I already said it, didn't I ..Let's see?
    >
    >
    > "Trevor Wilson" <> wrote in message
    > news:46082321$0$16301$...
    >>
    >> "Mark" <> wrote in message
    >> news:4607c3d8$0$68247$...
    >>> Can anybody point me to a good design of same.

    >
    > ... yes, thats me.
    >
    >>>
    >>> 240 VAC in, 9 VAC out.

    >
    > ......ah, I did.
    >
    >>
    >> **Why don't you tell us what you are trying to actually do, rather than
    >> telling us what you think you need?
    >>
    >> As you may have guessed, your request is difficult to satisfy.
    >>
    >> At a minimum, you need to tell us:
    >>
    >> * AC or DC
    >> * Maximum and minimum current requirements.
    >>
    >>
    >> --
    >> Trevor Wilson
    >> www.rageaudio.com.au
    >>
    >>
    >>
    >> --
    >> Posted via a free Usenet account from http://www.teranews.com
    >>


    What is the application?

    Do you need a regulated 9V RMS Sinewave output? What for?????

    James
     
    James, Mar 27, 2007
    #9
  10. Mark

    Phil Allison Guest

    "James"


    > Do you need a regulated 9V RMS Sinewave output? What for?????



    ** Forget it - " Mark " is an UTTER MORON with idea whatever of the
    meaning of the words he is using.

    Must be another ADHD fucked " ladder monkey " or some total FUCKWIT
    electrician.




    ........ Phil
     
    Phil Allison, Mar 27, 2007
    #10
  11. Mark

    Mark Guest

    Yes, I really do need 9 VAC for my application.

    Within the application, the 9 VAC is rectified, filtered, regulated (to +15
    VDC and -15 VDC) and then filtered again.

    So the input needs to be regulated to within about (+ or -) 1% 9 VAC.

    "Mike" <> wrote in message
    news:46081420$0$7449$...
    > In article <4607c3d8$0$68247$>,
    > says...
    >>
    >>Can anybody point me to a good design of same.
    >>
    >>240 VAC in, 9 VAC out.

    >
    > The closest thing in terms of a transformer that will be able to
    > provide 'some' regulation is a ferroresonant one. They were often
    > used 20 or more years ago but declined more quickly when the UPS
    > became cheaper.
    >
    > The yare good at supply regulation but bad for noise and bad for
    > waveform distortion.
    >
    > You dont really want to design a ferroresonant in a toroid unless
    > you want to spend a few weeks getting to grips with the material
    > properties and all the magnetics calculations and building many
    > prototypes.
    >
    > Far better you just get a good SMPS.
    >
    > But do you really need 9vac for your application or is that to feed
    > something else that could utilse DC more efficiently ?
    >
    > or did phil write this so i can practice typing and get even more
    > proficient ;)
    >
    >
    > --
    > Regards
    > Mike
    > * VK/VL Commodore FuseRails that wont warp or melt with fuse failure
    > indication
    > and now with auto 10-15 min timer for engine illumination option.
    > * VN, VP, VR Models with relay holder in progress.
    > * Twin Tyres to suit most sedans, trikes and motorcycle sidecars
    > http://niche.iinet.net.au
    >
     
    Mark, Mar 27, 2007
    #11
  12. Mark

    Mark Guest

    Yes.

    Say please.

    "James" <> wrote in message
    news:4609129b$...
    >
    > "Mark" <> wrote in message
    > news:46090d62$0$24861$...
    >>I am trying to build a 240 VAC in (or even 110 VAC in, I really don't
    >>care) 9 VAC out, regulated (to 9 VAC) , isolated (from transformer), step
    >>down transformer and AC power supply.
    >>
    >> Input fused (at about 2 amps) but I could adapt just about any design to
    >> about that current.
    >>
    >> There...but I think I already said it, didn't I ..Let's see?
    >>
    >>
    >> "Trevor Wilson" <> wrote in message
    >> news:46082321$0$16301$...
    >>>
    >>> "Mark" <> wrote in message
    >>> news:4607c3d8$0$68247$...
    >>>> Can anybody point me to a good design of same.

    >>
    >> ... yes, thats me.
    >>
    >>>>
    >>>> 240 VAC in, 9 VAC out.

    >>
    >> ......ah, I did.
    >>
    >>>
    >>> **Why don't you tell us what you are trying to actually do, rather than
    >>> telling us what you think you need?
    >>>
    >>> As you may have guessed, your request is difficult to satisfy.
    >>>
    >>> At a minimum, you need to tell us:
    >>>
    >>> * AC or DC
    >>> * Maximum and minimum current requirements.
    >>>
    >>>
    >>> --
    >>> Trevor Wilson
    >>> www.rageaudio.com.au
    >>>
    >>>
    >>>
    >>> --
    >>> Posted via a free Usenet account from http://www.teranews.com
    >>>

    >
    > What is the application?
    >
    > Do you need a regulated 9V RMS Sinewave output? What for?????
    >
    > James
    >
    >
     
    Mark, Mar 27, 2007
    #12
  13. Mark

    Phil Allison Guest

    "Mark Isley = Utter FUCKWIT "


    > Yes, I really do need 9 VAC for my application.



    ** BOLLOCKS you do !!



    > Within the application, the 9 VAC is rectified, filtered, regulated (to
    > +15 VDC and -15 VDC) and then filtered again.
    >
    > So the input needs to be regulated to within about (+ or -) 1% 9 VAC.



    ** This TOP POSTING, PITA DAMN FOOL

    has just gotta be a ADD fucked cable installer.

    What a bloody HOOT !!!!!!!

    Lets all keep this CRETIN on the fishing line as long as possible !!

    What entertainment !!




    ........... Phil
     
    Phil Allison, Mar 27, 2007
    #13
  14. Mark

    Phil Allison Guest

    "Mark Ilsley UTTER FUCKWIT "



    ** This TOP POSTING, PITA DAMN FOOL

    has just gotta be another ADD fucked cable installer !!!!

    Just like " Spanky" from Melbourne.

    What a bloody HOOT !!!!!!!

    Lets all keep this CRETIN on the fishing line as long as possible !!


    What top entertainment !!





    ........... Phil
     
    Phil Allison, Mar 27, 2007
    #14
  15. Mark

    Mark Guest

    No, I think I want to regulate the output of the transformer.

    The output of any transformer is only proportional to the voltage of it's
    input. AFAIK, anyway.

    So if the volts in aren't nominal, nor is the voltage out.

    "jasen" <> wrote in message
    news:euapio$dak$-a-geek.org...
    > On 2007-03-27, Mr.T <MrT@home> wrote:
    >
    >> "Rudolf" <> wrote in message
    >> news:...
    >>>> "Mark" <> wrote in message
    >>> news:4607c3d8$0$68247$...
    >>> > Can anybody point me to a good design of same.
    >>> >
    >>> > 240 VAC in, 9 VAC out.

    >>
    >>> Uni assignment?

    >>
    >> Sounds more like primary school :)

    >
    > He wants a transformer that regulates.
    >
    > --
    >
    > Bye.
    > Jasen
     
    Mark, Mar 27, 2007
    #15
  16. Mark

    Phil Allison Guest

    "Mark Ilsley = UTTER FUCKWIT "



    > No, I think I want to regulate the output of the transformer.
    >
    > The output of any transformer is only proportional to the voltage of it's
    > input. AFAIK, anyway.
    >
    > So if the volts in aren't nominal, nor is the voltage out.



    ** ROTFLMAO - this is absolutely CLASSIC !!!


    This TOP POSTING, PITA DAMN FOOL

    has just gotta be another ADD fucked cable installer !!!!

    Just like " Spanky" from Melbourne.

    What a bloody HOOT !!!!!!!

    Lets all keep this CRETIN on the fishing line as long as possible !!


    What top entertainment !!





    ........... Phil
     
    Phil Allison, Mar 27, 2007
    #16
  17. Mark

    Mark Guest

    Re: PISS OFF TROLL !!!!!!!!!!!!!

    Doesn't matter a rats arse to my purpose.

    "Phil Allison" <> wrote in message
    news:...
    >
    > "Mark"
    >
    >
    > ** BEWARE: Top posting fuckwit on loose !!
    >
    >
    >
    >> I am trying to build a 240 VAC in (or even 110 VAC in, I really don't
    >> care) 9 VAC out, regulated (to 9 VAC) , isolated (from transformer), step
    >> down transformer and AC power supply.

    >
    >
    > ** Seeing as you are a COLOSSAL FUCKING MORON with ZERO
    >
    > ability to provide a intelligent specification
    >
    > - just what the **** s the application - eh ???
    >
    >
    >> Input fused (at about 2 amps) but I could adapt just about any design to
    >> about that current.

    >
    >
    > ** Err - is that 2 amps AC at 240 volts or 120 volts - FUCKWIT ??
    >
    >
    >
    >> There...but I think I already said it, didn't I ..Let's see?

    >
    >
    > ** This UTTER ASS is either on an overdose of mild altering drugs
    >
    > - or damn well needs to be.
    >
    >
    > PISS OFF TROLL !!!!!!!!!!
    >
    >
    >
    >
    > ....... Phil
    >
    >
    >
    >
     
    Mark, Mar 27, 2007
    #17
  18. Mark

    Phil Allison Guest

    Re: PISS OFF TROLL !!!!!!!!!!!!!

    "Mark Ilsley UTTER FUCKWIT "


    > Doesn't matter a rats arse to my purpose.



    ** ROTFLMAO - this is absolutely bloody CLASSIC !!!


    This TOP POSTING, PITA DAMN FOOL

    has just gotta be another ADD fucked cable installer !!!!

    Just like that " Spanky" moron from Melbourne.

    What a bloody HOOOT !!!!!!!


    Lets all keep this CRETIN on the fishing line as long as possible !!

    What top entertainment !!




    ........... Phil
     
    Phil Allison, Mar 27, 2007
    #18
  19. Mark

    James Guest

    "Mark" <> wrote in message
    news:46091546$0$24867$...
    > Yes, I really do need 9 VAC for my application.
    >
    > Within the application, the 9 VAC is rectified, filtered, regulated (to
    > +15 VDC and -15 VDC) and then filtered again.
    >
    > So the input needs to be regulated to within about (+ or -) 1% 9 VAC.



    *** Thanks...thats the best laugh I've had for ages :)
    I'm sure a single 9Vac supply will give you amazingly clean +/-15V rails,
    you'd best make sure you get a 500W toroidal though, that'll help..

    PMSL

    James


    >
    > "Mike" <> wrote in message
    > news:46081420$0$7449$...
    >> In article <4607c3d8$0$68247$>,
    >> says...
    >>>
    >>>Can anybody point me to a good design of same.
    >>>
    >>>240 VAC in, 9 VAC out.

    >>
    >> The closest thing in terms of a transformer that will be able to
    >> provide 'some' regulation is a ferroresonant one. They were often
    >> used 20 or more years ago but declined more quickly when the UPS
    >> became cheaper.
    >>
    >> The yare good at supply regulation but bad for noise and bad for
    >> waveform distortion.
    >>
    >> You dont really want to design a ferroresonant in a toroid unless
    >> you want to spend a few weeks getting to grips with the material
    >> properties and all the magnetics calculations and building many
    >> prototypes.
    >>
    >> Far better you just get a good SMPS.
    >>
    >> But do you really need 9vac for your application or is that to feed
    >> something else that could utilse DC more efficiently ?
    >>
    >> or did phil write this so i can practice typing and get even more
    >> proficient ;)
    >>
    >>
    >> --
    >> Regards
    >> Mike
    >> * VK/VL Commodore FuseRails that wont warp or melt with fuse failure
    >> indication
    >> and now with auto 10-15 min timer for engine illumination option.
    >> * VN, VP, VR Models with relay holder in progress.
    >> * Twin Tyres to suit most sedans, trikes and motorcycle sidecars
    >> http://niche.iinet.net.au
    >>

    >
    >
     
    James, Mar 27, 2007
    #19
  20. Mark

    Mark Guest

    Bullshit

    "James" <> wrote in message
    news:...
    >
    > "Mark" <> wrote in message
    > news:46091546$0$24867$...
    >> Yes, I really do need 9 VAC for my application.
    >>
    >> Within the application, the 9 VAC is rectified, filtered, regulated (to
    >> +15 VDC and -15 VDC) and then filtered again.
    >>
    >> So the input needs to be regulated to within about (+ or -) 1% 9 VAC.

    >
    >
    > *** Thanks...thats the best laugh I've had for ages :)
    > I'm sure a single 9Vac supply will give you amazingly clean +/-15V rails,
    > you'd best make sure you get a 500W toroidal though, that'll help..
    >
    > PMSL
    >
    > James
    >
    >
    >>
    >> "Mike" <> wrote in message
    >> news:46081420$0$7449$...
    >>> In article <4607c3d8$0$68247$>,
    >>> says...
    >>>>
    >>>>Can anybody point me to a good design of same.
    >>>>
    >>>>240 VAC in, 9 VAC out.
    >>>
    >>> The closest thing in terms of a transformer that will be able to
    >>> provide 'some' regulation is a ferroresonant one. They were often
    >>> used 20 or more years ago but declined more quickly when the UPS
    >>> became cheaper.
    >>>
    >>> The yare good at supply regulation but bad for noise and bad for
    >>> waveform distortion.
    >>>
    >>> You dont really want to design a ferroresonant in a toroid unless
    >>> you want to spend a few weeks getting to grips with the material
    >>> properties and all the magnetics calculations and building many
    >>> prototypes.
    >>>
    >>> Far better you just get a good SMPS.
    >>>
    >>> But do you really need 9vac for your application or is that to feed
    >>> something else that could utilse DC more efficiently ?
    >>>
    >>> or did phil write this so i can practice typing and get even more
    >>> proficient ;)
    >>>
    >>>
    >>> --
    >>> Regards
    >>> Mike
    >>> * VK/VL Commodore FuseRails that wont warp or melt with fuse failure
    >>> indication
    >>> and now with auto 10-15 min timer for engine illumination option.
    >>> * VN, VP, VR Models with relay holder in progress.
    >>> * Twin Tyres to suit most sedans, trikes and motorcycle sidecars
    >>> http://niche.iinet.net.au
    >>>

    >>
    >>

    >
    >
     
    Mark, Mar 27, 2007
    #20
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