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Help with reading schematic

Discussion in 'General Electronics Discussion' started by Skaterboyincr, Nov 7, 2012.

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  1. Skaterboyincr

    Skaterboyincr

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    Nov 1, 2012
    Dont fully understand how to read a schematic please help!
     
  2. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    How can we help without you showing us the schematic and telling us where your problem(s) is (are)?

    That leaves only one advice: learn to read a schematic.
     
  3. shrtrnd

    shrtrnd

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    Jan 15, 2010
    Got an electronics store near you? (Electronics Parts Store, that is)
    There are a number of concise books available to learn symbols for electronic parts.
    If you know the terms you're looking for, you can Google lots of information on what
    the parts are, what they do, and how they work in a circuit.
    How detailed do you need to get?
    If you can show us the schematic (if this is a one-time deal), Karald Kapp or others
    here can help you with questions you have.
     
  4. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

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    652
    May 8, 2012
  5. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

    4,960
    652
    May 8, 2012
  6. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Jan 21, 2010
    This might help you. It's pretty old, and some of the symbols are a bit dated...

    I didn't read to the end, it may also tell you how to disassemble your rifle or tell you how to make a wifi dongle from a microwave. Don't blame me if it does.
     
  7. donkey

    donkey

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    Feb 26, 2011
    https://www.electronicspoint.com/help-leds-t253822p2.html
    is the schematic the one coca cola provided in the second last post on this thread? if so we can go over it real quick.
    if its from another link please provide it and we can show you every piece.
    if it is from cc's post then the "squiggly" line are resistors values are provided
    the triangles with vertical lines at the end are LED's. these HAVE to go the right way or they won't light up
    and in the bottom left is the 9v power supply

    the other lines are wires connecting them together.
     
  8. Skaterboyincr

    Skaterboyincr

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    Nov 1, 2012
  9. BobK

    BobK

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    Jan 5, 2010
    If you are looking for an adjustable voltage power supply that is not it. Try looking in the LM317 datasheet.

    Bob
     
  10. Skaterboyincr

    Skaterboyincr

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    Nov 1, 2012
    I googled lm317 data sheet and i cant find a schmatic. Im looken for a wide range of power you never know what ill need it for . 1.5v to 12v should do
     
  11. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

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    May 8, 2012
    A sample schematic is provided in the data sheets provided on line. Just Google LM317 Data Sheet.

    Chris

    Edit: Are you saying that the data sheet you looked at does not provide any applications schematics? I find that hard to swallow.
     
    Last edited: Nov 8, 2012
  12. Skaterboyincr

    Skaterboyincr

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    Nov 1, 2012
    Im not to good with computers ill look again
     
  13. Skaterboyincr

    Skaterboyincr

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    Nov 1, 2012
  14. Harald Kapp

    Harald Kapp Moderator Moderator

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    Nov 17, 2011
    Right on the cover sheet is a typical application for a 1.2 V - 25 V adjustable regulator. The theory of operation is explained starting on page 9.
    What else do you need?

    Harald
     
  15. CocaCola

    CocaCola

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    Apr 7, 2012
    Unlikely... When I Google 'lm317' this is what I get, complete with a schematic on the front page...

    [​IMG]

    When I click on the Images tab at that top of the Google search I get this, a plethora of schematics...

    [​IMG]

    Are you not getting the same thing, or at least very similar when you Google?

    If not change the search to 'lm317 schematic'...

    But, at the end of the day it's best to simply download the datasheet as others have advised, almost all of them have basic circuit diagrams...
     

    Attached Files:

  16. Skaterboyincr

    Skaterboyincr

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    Nov 1, 2012
    Im sorry this might sound stupid but i just ant understanding
     
  17. CDRIVE

    CDRIVE Hauling 10' pipe on a Trek Shift3

    4,960
    652
    May 8, 2012
    What 'specifically' don't you understand?

    Chris
     
  18. Skaterboyincr

    Skaterboyincr

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    Nov 1, 2012
    Well there are like 8 different pictures and i dont know which one is the auctual schematic
     
  19. CocaCola

    CocaCola

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    Apr 7, 2012
    As Harald already told you the schematic is on the cover sheet (aka first page) of the datasheet that you found...

    [​IMG]
     

    Attached Files:

  20. Harald Kapp

    Harald Kapp Moderator Moderator

    11,811
    2,751
    Nov 17, 2011
    Nice ring of fire :)
    Where did you get it?

    Harald
     
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