how do you read ascii schematics?

Discussion in 'General Electronics Chat' started by mecha, Nov 10, 2012.

  1. mecha

    Thread Starter New Member

    Nov 10, 2012
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    Hello - newbie question - some folks post schematics in ascii - I can't make them out - any tips?
    thanks!
     
  2. nerdegutta

    Moderator

    Dec 15, 2009
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    Any examples?
     
  3. crutschow

    Expert

    Mar 14, 2008
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    Are you referring to .asc files? Those are not ascii, they are LTspice files. You can download the free LTspice simulator program from Linear Technology to look at those files and also simulate the circuits in the files.
     
  4. vk6zgo

    Active Member

    Jul 21, 2012
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    No,they use the ASCII characters to actually draw a circuit diagram,a bit like
    people used to make pictures using teletype machines years ago.
     
  5. kubeek

    AAC Fanatic!

    Sep 20, 2005
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    Reading that requires non-proportional font like terminal or courier, then the drawing should make more sense.
    Do you have any examples you have trouble with?
     
  6. spinnaker

    AAC Fanatic!

    Oct 29, 2009
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    Then what do you mean by "read" them? Just look at them.

    I have never seen anything like this.

    Once again do you have an example????? I physical example?

    If a schematic was produced by a teletype machine, why should you can about reading it anyway? The technology in the schematic would be extremely outdated.
     
  7. kubeek

    AAC Fanatic!

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  8. spinnaker

    AAC Fanatic!

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  9. atferrari

    AAC Fanatic!

    Jan 6, 2004
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    Horrible drawing. Those things should be forbiden by international law.
     
  10. vk6zgo

    Active Member

    Jul 21, 2012
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    I said "a bit like"--got to be careful with "speed reading"!:D
     
  11. Blofeld

    Active Member

    Feb 21, 2010
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    Exactly. The easiest thing that works for me is to copy the stuff into Notepad (I'm pretty sure every PC running Windows has it - don't know about Linux).

    In Notepad it looks OK. I'm not saying it looks nice, but that's impossible to achieve.
     
  12. DerStrom8

    Well-Known Member

    Feb 20, 2011
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    You read them like any other schematics. It often helps to look at it from a distance of a few feet first. That will give you the overall picture, then you can look closer to find the details.
     
  13. mecha

    Thread Starter New Member

    Nov 10, 2012
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  14. MrChips

    Moderator

    Oct 2, 2009
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    Yikes!

    At the very least, use Paint or hand draw your drawings and post a photo or scan.
     
  15. DerStrom8

    Well-Known Member

    Feb 20, 2011
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    Okay, that looks like an archive, and it appears that the circuits have lost their spacing. Without spacing, it's impossible to know how the circuit is supposed to be connected.
     
  16. mecha

    Thread Starter New Member

    Nov 10, 2012
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    thanks, I don't feel so stupid now :)
     
  17. DerStrom8

    Well-Known Member

    Feb 20, 2011
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    Hahaha, yup. There's absolutely no way to read that unless you can figure out the original spacing. Sometimes it's possible, but it's rare. You're perfectly fine :p
     
  18. ScottWang

    Moderator

    Aug 23, 2012
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    To using the ascii chrs to draw the circuit, I think that idea is came from ascii art as below:
    http://www.google.com/search?hl=en&...urce=og&sa=N&tab=wi&ei=u8OeUIjuEersmAXdooCYBg

    Some systems of the forums will reduce the space automatically, so you can not use or not easy to draw the circuits.

    For some reasons that the people will use ascii chrs to draw the circuits, some are for the HDD space of the website, some are don't like to draw the circuit by paint or as protel, oracd etc.
     
  19. WBahn

    Moderator

    Mar 31, 2012
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    It displays fine on my browser. As others have said, it is important to get the intercharacter spacing correct. If the maker used a fixed-pitch font and nothing reduced multiple whitespace to a single space, you should be able to render it properly.

    In this particular schematic (which I realize you are just using as an example) there is a connection that doesn't make sense -- namely the emitter of the NPN transistor. I'm guessing there is a resistor to ground that is missing.
     
  20. spinnaker

    AAC Fanatic!

    Oct 29, 2009
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    My thoughts. Why would anyone post such a thing? I see from Scott he says to save space plus a few other ideas but yikes!. It has to be a hassle to create and even a bigger hassle if the spacing goes away.
     
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