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Recent content by Prototyp_V1.0

  1. Prototyp_V1.0

    [SOLVED] Attempt to calculate symetrical components - get wrong results

    Update : I was able to calculate the correct results by hand (simple calculator). So I assume the error must lie in how I make Geogebra calculate the results.
  2. Prototyp_V1.0

    [SOLVED] Attempt to calculate symetrical components - get wrong results

    Hi. I have this calculation issue that I'm not able to figure out what I'm doing wrong (I have used an online calculator so I know my result differs from the true answer). This is the list of every wrong calculation: Positive sequence: Real answer is 354∠97∘354∠97∘ My calculation...
  3. Prototyp_V1.0

    Question about SFP and reliability of reported line loss

    Hi. Have a pair of managed switches with a fiber pair. The repported line loss in dB by the web interface of the switches - is that number somehow accurate? Or is the accuracy very dependent on manufacturer/model of each network unit or SFP ? Here is the actual information from each switch web...
  4. Prototyp_V1.0

    Delay circuit for Negative voltage

    Are this an issue to the controller device (i.e. advice on how to set it up) - or to use some external circuit to solve this? If latter, then you could use an RC circuit, a schmitt trigger and a relay with two independent contacts (DPDT relay).
  5. Prototyp_V1.0

    Range of ethernet?

    Well, it depends on several factors, among: Type of cable (cat5e or higher), is it shielded? What kind of termination of the cable? What devices are connected to each end of the cable? Are there different ground potential on each side? If yes and if the return current is high, that can...
  6. Prototyp_V1.0

    Circuit diagram of clap switch

    Cannot see any schematic. Te link says: Oops! We ran into some problems. You do not have permission to view this page or perform this action.
  7. Prototyp_V1.0

    Machine learning algorithms for classification and identification of file formats

    Isn't this already taken care of by MIME types and content sniffing ? https://en.wikipedia.org/wiki/Media_type https://en.wikipedia.org/wiki/Content_sniffing I know that at least Linux desktop systems and their file managers do content sniffing as it doesn't care about file extension as in...
  8. Prototyp_V1.0

    Shmitt trigger VS Transistor

    That depends on the input source. What is the nature of the input signal/voltage ?
  9. Prototyp_V1.0

    Losses on the BJT transitor ?

    I don't know what t think about heating by 5V supply. However, with the new requirements you have informed about, then there gets a couple of needs as I see it: You want to get feedback about Ic. You also need feedback about junction temperature and thereby built in a limitation logic so that...
  10. Prototyp_V1.0

    Losses on the BJT transitor ?

    This seems like a fun task to figure out. However, there are two several problems as I see it: The most "POWER" that the bjt can dissipate depends on the characteristics of the battery. If the internal resistance are linear and if the battery symbol is actually representing a DC supply with a...
  11. Prototyp_V1.0

    Inductor Simulation with current

    Just a suggestion - maybe that chart show reactance instead of inductance ?
  12. Prototyp_V1.0

    Laptop not starting windows

    The thing about booting to a live desktop (from usb/iso-image) is that you get to test how the hardware works without installing. Give it time, and you can test several different distros easily, and then you may choose the one that best work with your hardware and/or the one you think have the...
  13. Prototyp_V1.0

    How big and heavy and £££ is a 10kW 50Hz, 3 phase mains transformer?

    Not completely agree with the wording since they most often share the same core
  14. Prototyp_V1.0

    Fall of potential - how to calculate reference distance manually

    Still not solved (bumb). It's being impossible to contact the app developer, and hence not getting any closer an answer (method for calculate the distance manually).
  15. Prototyp_V1.0

    Converting .sbk files (circuit schematics) to pdf

    Look here: https://filext.com/file-extension/SBK If you get hold of a software that can open that file, you'll also need something to convert to PDF. A PDF printer should do.

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