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guidovelasquez

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guidovelasquez last won the day on November 6 2018

guidovelasquez had the most liked content!

About guidovelasquez

  • Rank
    WRT Addict
  • Birthday 02/05/1965

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  • Gender
    Male
  • Location
    Guatemala
  • Interests
    Electrónica, Fotografía, Montañismo, Cometas

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  1. Gracias @svorkoetter por el increíble software que compartes con nosotros. Ya empezamos a usarlo. Thanks for the incredible program you share with us. we will start to use it.
  2. On the digital filter to be applied, anyone will improve the signal. I think that will depend on the sound of the clock itself. Although personally I think the Wide option is better (160Hz - 16kHz)
  3. I'm analyzing the recording. And I have some observations. The first is that I can think that some buzzing of the 50 hz network is affecting although it is low with respect to the level of the signal. But when analyzing the gradation, in the second 26 drastically disappears a buzz that corresponds to very close to 90 hz. By doing so, the signal is cleaner. If you can determine what causes it, the signal will improve. I get the feeling that the stand of the microphone is not sufficiently padded and the vibration of table or desk that could be the vibration of the fan or the hard disk are transferred to the microphone.
  4. You also did a good job of shielding the peripherals of the microphone. That's where the signal is disturbed. Due to the level of amplification any parasitic noise, it would also be amplified.
  5. Good job Eland. Excelent sound. I have already done an analysis of the waveform and it is excellent. It's like music to my ears. I think that with that level of sound and editing programs can do a good job. Congratulations.
  6. Good job Eland. Congratulations, you are doing a good job. And do not despair about the broken discs ... I have already lost count of how many I have destroyed, due to excessive heat, excessive force, etc. It could be that my response is a bit hasty, but I'm sure you do not need any of the devices that you indicate in the links. they are all POWER AMPLIFIERS. And what you need is a pre-amplifier. And seeing what you used in your project, I would consider that what you need is accurate and nothing more. It is possible that some modifications could be made but they would be minor. I would like to ask you to share an on-screen capture of the waveform to determine the level of the signal you are getting. I send you an example of what I am requesting.
  7. Thanks for your comments and experience Frank. I also work with watches that it is necessary to move the collet. It is a very precise adjustment. And sometimes tedious because the adjustment can easily be exceeded or not knowing in which direction it should be done. Guido
  8. Hi, Frank. Thanks for the data you share. I wish to clarify that I made a mistake in indicating the breadth in my publication. He had indicated an amplitude of 270 degrees. But it is not correct. What you publish is correct. Approximately 235 degrees. Excellent application It strikes me that in addition to indicating the value of beat error in milliseconds, the program also indicates it in degrees. According to my assessment that is very useful, because to correct it, it is necessary to pre-visualize approximately how much the collet must be turned on the balance wheel staff or how much movable stud must be moved. Thank you
  9. Dear Sirs. I share with you a record recording of a Omega Lemania Caliber 9160A. 18000 bph stopwatch. According to my records it presents approximately 4.8 seconds of advance. The beat error is approx 0.2ms and the amplitude is 270 degrees or so. The elevation angle is adjusted by 41 degrees. I share it because someone can be useful. I also want to inform you that to pick it up I am using a caiman clamp to which I soldered a 27mm piezo electric disk with a modified PYLE PP444 preamplifier. In addition to improve the sound and filter unwanted noise I am using the applications for windows: PEACE + APO EQ I also leave a screenshot of the configuration. There are 30 seconds of recording that can be played as a loop. https://mega.nz/#!HaQFTSxA!FATJQ6XI8FYjQBBGqtPjvdVj1i6bZp7RwI5uBgaL7ng
  10. Thanks for the suggestions Frank. Our limitations in the electronics benefit from your experience and knowledge. On a more modern IC, I have tried to find one that can work a low voltage and that does not require a "symmetrical" source of tension that complicated.
  11. Thanks for the clarification. The circuit has not physically tested it. And I had the suspicion that it did not work on the edge of 3 volts. But the explanation is appreciated. I only have one question left and I appreciate the help: would it work with 5 volts from a USB port?
  12. This is the link to find it. https://mindsetsonline.co.uk/shop/mono-preamp-kit/
  13. This circuit option seems very efficient. Especially that the voltage can be from 3 volts to 25 volts. Mono Preamp.pdf
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