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    Closed: Re: Issue with relay and snubber

    I strongly suspect that the capacitor is defective (failed due to high voltage spikes from the motor).

    If your motor is taking about 2A current (say around 500W power or so) you should use a...
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    Closed: Re: What wire is this? Old 2009 TV

    They are not usual cables for the speaker. They are commonly audio signal cables. If the cables are at fault, they must be broken (discontinuous) inside- just check with a multimeter.

    They are...
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    Closed: Re: Current increase electrolytic cell

    First you must try to get reproducible results.

    By design, your setup is irreproducible. Why?

    To get a stable potential at the Cu plate, you must use Cu(II) at the interface. Use a dilute...
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    Closed: Re: Current increase electrolytic cell

    Because a galvanic cell or an electrochemical cell, both have considerable internal resistance. Commercial cells (say a Pb acid cell or a Li based one) are designed to minimize this internal...
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    Closed: Re: Current increase electrolytic cell

    Analog meter has a current shunt. Often the movement is a 10K/V sensitivity and the shunt is limiting current. Anyway, you need to read the fine manual that came with it. DMM also has a current shunt...
  6. Closed: Re: How to fix Too many open files or Segmentation Fault.

    In general, earlier errors are more user-friendly than subsequent errors.

    One single error often produces a cascade; usually the first reported error needs the greatest attention.

    Sometimes if...
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    Closed: Re: public hex to asm possible to get

    It took long time because I made mistakes after mistakes. I made mistakes not because I did not know how to do but because I was not careful enough.

    I am glad that it worked. Happy coding and...
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    Closed: Re: public hex to asm possible to get

    yes, I fount the error and made changes. Here is the correct file: 156585
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    Closed: Re: public hex to asm possible to get

    You are correct; but this is a nice exercise for a beginner.

    Fortunately the code was not protected. PIC HEX files can be resistant to editing if they are code protected. However, I do not know...
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    Closed: Re: Choose a proper magnetic field sensor

    The transducer can be mounted outside the box; it is quite robust. IR sensors are modulated; just like a remote control they can work in outdoor light. Will the magnetic field sensor will work at...
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    Closed: Re: public hex to asm possible to get

    The corrected file is -- 156569

    Hope that is useful.
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    Closed: Re: public hex to asm possible to get

    Sorry, I must have made some mistake in the editing. I am outlining the steps to be followed with some screenshots.

    1. Start with the last working file, final.zip, extract it to get final.hex....
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    Closed: Re: public hex to asm possible to get

    It is my fault; I did not double check. I should have.

    Now that it is working, I can tell you how I did edit the hex file OR I can do the correction.

    I did edit the file in vim; it has context...
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    Closed: Re: public hex to asm possible to get

    Yes, I have finally modified the mw104.zip (this appears to be a newer file). The corrected file is attached here:156537

    You need to unzip and upload the final.hex - fortunately the code was not...
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    Closed: Re: public hex to asm possible to get

    The source code files you have posted are different but compiles ok.

    I shall try to edit the hex file...
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    Closed: Re: public hex to asm possible to get

    Could you try the modified file? Did it work?
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    Closed: Re: public hex to asm possible to get

    I have compiled the source file once again (the one named 020026-11.zip) and there appears to be no serious error (some warnings are there).

    Unzip the following zip file and use the hex file and...
  18. Closed: Re: Will this ceramic capacitor be damaged by overvoltage spikes?

    Even peak voltage ratings have limits: it is never specified but may be +/-5%

    Exact nature of the damage is usually not specified. Some damages are cumulative but some may recover too with time.
    ...
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    Closed: Re: public hex to asm possible to get

    I shall take a look on the first set tomorrow and let you know. If that does not work, I shall work on the second file.

    It is not really difficult. I have edited hex files in younger days.
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    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    That is the point I am trying to convey: it is not possible to measure any quantity in ZERO time; all physical measurements take time to perform.



    No, it is still defined. Consider a sine wave...
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    Closed: Re: public hex to asm possible to get

    Could you please zip all the relevant files and put up here? One that you found working...

    Once I get it, I shall recompile, correct errors and resend back to you with modifications.
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    Closed: Re: public hex to asm possible to get

    I am puzzled; I shall compile the original and send you once again. Without any modifications: that should tell whether I have made any mistakes in compilations.
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    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    It need not be exactly zero; in floating point asthmatics, you test for zero with a small number.



    when both current and voltage are zero, what is the calculated value of the resistance?
    ...
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    Closed: Re: public hex to asm possible to get

    Try this once again: this has been compiled fresh.

    156478

    Expand the file and try....
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    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    What you have done is called point-wise division. This may not be same R(t)=U(t)/I(t) under some conditions. Particularly near singularities. I won't go into these details. Recall that division by...
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