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AC to DC conversion question

Discussion in 'Electrical Engineering' started by gis, Nov 14, 2003.

  1. gis

    gis Guest

    Hi,

    heres my dilema, I have a AC 12 V source which I need to convert to
    about.......lets say, DC 5 volts I guess.

    Anyone know how I can do this
     
  2. jriegle

    jriegle Guest

    How much current?
     
  3. Such a dilema (or even dilemma). Hmm. Use the 12 V ac to boil water.
    Collect the steam, direct into a piston engine. Belt the engine to a
    water pump. Pump water up a hill to a large reservoir. Build a penstock
    out of PVC pipe and direct it to a hydraulic turbine. Use the hydraulic
    turbine to turn the shaft of a dc generator shaft. Regulate the output
    of the generator with a carbon-pile stack connected to its field. You
    can make the elements from the carbon pile stack by cutting disks out of
    the centre rod of a common No. 6 dry cell.


    If anyone knows a simpler way to accomplish this, I challenge you to
    describe it.

    Bill

    ( a few parameters would make this more of a proper engineering
    question. Don't they sell those "101 Electronic Projects " books on
    newstands for $3 any more? )
     
  4. repatch

    repatch Guest

    I can't believe you'd be so irresponsible... You've COMPLETELY forgetten
    the most important stage: hamster turing it's wheel. Sad, just sad! :) TTYL
     
  5. gis

    gis Guest

    ok maybe 20 - 50 mA?


     
  6. Ben Miller

    Ben Miller Guest

    Boy did you date yourself! I'll bet the youngsters out there never saw one
    of those. They don't exactly fit into a portable MP3 player!

    Ben Miller
     
  7. zorin

    zorin Guest

    I'm a youngster! (Well, 26 anyway).. and yes, I've never seen a No. 6
    dry cell, but have heard of them. What exactly are they, and what are
    (were?) they used in?

    I'm only familiar with AA, AAA, C, D, N and the ever-handy
    tongue-testable 9V. }:)

    -Z
     
  8. repatch

    repatch Guest

    Now THAT is original! Finally a REASON to fart! :)
     
  9. Louis Bybee

    Louis Bybee Guest

    The were/are 1&1/2 volt dry cells about the size of a small thermos. Used
    most often in groups for doorbell/call systems in old apt. bldgs. - larger
    homes - etc., and other signaling uses. I have also seen (in the past) them
    used for lighting infrequently used closets, and storage spaces in
    combination with door switches.

    They were also quite often used in training facilities for powering training
    boards (switches, lights, and other devices) before low voltage power
    supplies were commonly available.

    I believe the chemistry was Zink Chloride?

    Louis--*********************************************
    Remove the two fish in address to respond
     
  10. John G

    John G Guest

  11. fishbulb

    fishbulb Guest

    AC/DC.....I always loved that band!
     
  12. A set of No. 6 cells would run your MP3 player for a long long time. I
    once had a bunch of these for use with telephones - though of course not
    telephones connected to the phone company.

    A few weeks ago it occured to me that the portable set playing quietly
    in the corner of my home office was possibly the first time my nephews
    and nieces had ever seen a black-and-white TV.


    To prove your antiquity, what are these: 50C5, 35W4, 12AU6,6BE6, 12AV6.


    Bill
     
  13. Ben Miller

    Ben Miller Guest

    To prove your antiquity, what are these: 50C5, 35W4, 12AU6,6BE6, 12AV6.

    Those are modern vacuum tubes from an "all american five" radio circuit. I
    restore sets that used some of the earliest ones.

    Ben Miller
     
  14. Brian

    Brian Guest

    Do you school work yourself! If you do not pay attention in class, how do
    you expect to make it in the real world?!?
     
  15. Ross Mac

    Ross Mac Guest

    Sure your handle isn't Rube Goldberg???
     
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