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Best online tool to draw circuit diagrams?

Discussion in 'Electronic Basics' started by Mr. Man-wai Chang, Aug 15, 2013.

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  1. Your suggestion?

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  2. Ken Moffett

    Ken Moffett Guest

  3. JW

    JW Guest

    Can you simulate a shorted LED?
     
  4. No, but surely all he needs is program enough to draw an led in series
    with a resistor.

    Michael
     
  5. P E Schoen

    P E Schoen Guest

    "Jim Thompson" wrote in message
    Well, you could just set up a camera which would locate the DEDs, but if one
    of a string was open, the entire string would be dead.

    It should be simple enough to detect the loss of current if one of a string
    opened, or the voltage difference when one shorted.

    You could attach two LEDs in series across each LED in the matrix, so if an
    LED opened, the two LEDs would light instead.

    It might be possible to use TDR
    (http://en.wikipedia.org/wiki/Time-domain_reflectometer) to locate the open
    or shorted LED by its signature on the return pulse waveform which should
    differ from the normal LED, and the time will locate the offending device.
    It takes something truly remarkable these days to elicit astonishment, or to
    obtain a patent. Most patents seem to be granted because of the applicant's
    skill at technological obfuscation along with the patent examiner's lack of
    comprehension or expertise in highly specialized and complex niches of
    technology.

    I like LTspice for schematics. And the Mentor Graphics PADS suite for PCBs
    as well as overall assemblies. I print the schematics to PDF and convert
    them to JPG or PNG format for presentation in a universally readable format,
    like http://enginuitysystems.com/pix/12V_SLA_BMS_PIC12F1822_001.png.

    Paul
     
  6. Daniel Pitts

    Daniel Pitts Guest

    I haven't tried it in a while, but http://www.circuits.io/ seemed promising.
     
  7. Jasen Betts

    Jasen Betts Guest

    Do you look at the voltage on the current source output,
    or is it something non-obvious?
     
  8. Thank you all for the replies! :)

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    @[email protected] Remain silent. Nothing from soldiers and magicians is real!
    / v \ Simplicity is Beauty! May the Force and farces be with you!
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