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power supply

Discussion in 'Electronic Basics' started by [email protected], Aug 11, 2007.

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  1. Guest

    hello everyones! i am a new visitor of ur community. my problem is
    that i want to built my own regulated power supply for my experiments
    of electronics.the power supply should be v&i regulated up to max 50v
    dc and 10 amp regulated.i also want its display of v&i in digital
    form. can any one help me about this regards
     
  2. Chris

    Chris Guest

    This is not going to be an inexpensive project, sir. We all would
    like good electronics equipment, but are reluctant to pay the going
    price.

    Why don't you try a piece of used test equipment? It will surely be
    cheaper than buying the components to make one yourself, and certainly
    less than a new one.

    You might want to look at the HP6274B, which will give you lab quality
    constant voltage or constant current in the range of 0-60V and 0-15A.
    Its only shortcoming for you is providing analog meters for voltage
    and current rather than digital displays. You will probably spend at
    least several hundred dollars for a working one, but it'll be a
    bargain over trying to build something that big, especially for a
    newbie.

    Possibly, if you lower your sights on the current spec by an order of
    magnitude or so, you might be able to build something yourself.

    Good luck
    Chris
     
  3. The best advice I can suggest is enroll in local 'Hercules' club and in
    about two years of intensive training you will be ready to tackle
    physically this kind of monster.
    The display is the easy part, I and V 'regulated' output is another
    story altogether. Start with an appetiser of 25vX2A and then move on to
    3/4 KW levels.
    BTW you say electronics, those usually mean small amounts of power.

    Good luck

    Stanislaw.
     
  4. Guest


    hi,
    frnd i don't know what is ur intention in making these large power
    supply with huge current.In electronics we usually deals with currents
    os the order micro amp. and a few volts and i think most of the
    transistors and electronics devices now available are not cpable of
    with standing ur requirements so that it is better to u to forget ur
    project. GOOD LUCK IF U WANT CONTINUE WITH THIS ONE.
     
  5. JANA

    JANA Guest

    This would be a very expensive and a complex project. It would be a lot
    cheaper for you to go out and buy a discent laboratory type bench supply
    that would meet your needs. There are used ones around at a reasonable cost.

    When building projects that work on the mains supply, there is a strong need
    for the consideration for safety and to meet the proper standards.

    --

    JANA
    _____


    hello everyones! i am a new visitor of ur community. my problem is
    that i want to built my own regulated power supply for my experiments
    of electronics.the power supply should be v&i regulated up to max 50v
    dc and 10 amp regulated.i also want its display of v&i in digital
    form. can any one help me about this regards
     
  6. Nobody

    Nobody Guest

    There are plenty of applications of electronic circuits which involve
    currents up to or even in excess of 100 amps. Motor drivers are a common
    example. Look at the rcgroups.com forums dealing with electric model
    aircraft; BLDC motors which take 30-80 amps are commonplace, and those
    have to be driven by electronic driver circuits.

    For a switched-mode power supply, 10 amps is trivial; the PSU in a PC
    delivers more than that. SMPS which deliver hundreds of amps are common.
     
  7. John Fields

    John Fields Guest

    ---
    There are many companies which sell test equipment who can supply
    you with exactly what you need for far less (in money and
    aggravation) than it would take for you to build an equivalent power
    supply.

    As an aside, why do you find it necessary to flaunt the rules of
    English when asking for help from an obviously English-speaking
    community?

    It's not like you don't know what it's about, it's more like you're
    trying to change the culture.

    Typical euro, yes?
     
  8. Rich Grise

    Rich Grise Guest

    Nah, just a googlie texter.

    I didn't even know anybody still lived in Ur. ;-)

    Cheers!
    Rich
     
  9. Guest

    hi i start a project for a dual power supply unit
    voltage and current regulation 3/5 or more if you want amp
    and 0 to about 20 V output
    overvoltage protection and short circuit protection
    if you want to help me...
    for the normal electronic's activity is optimal
    http://groups.google.it/group/sci.e...o2+power+supply&rnum=1&hl=it#df546484c1c5afda
     
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