Schmitt Trigger Inverter Oscillator - Fun with Nand Gates and RC Networks

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  • Опубліковано 25 жов 2024

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  • @leachim66
    @leachim66 5 років тому +5

    I really like these videos on discrete components. More fun than arduinos and code for me lately.

    • @GadgetReboot
      @GadgetReboot  5 років тому +1

      I’m probably going to be all over the place between Arduino and discrete parts, depending what I’m in the mood for I guess and if I received any new items I want to try out or if I feel nostalgic for old stuff. There’s going to be some 555 timer projects coming up now that I have received PCBs with a design I did last weekend.

    • @billfusionenterprise
      @billfusionenterprise 5 років тому

      music industry going that way too with synths

    • @billfusionenterprise
      @billfusionenterprise 5 років тому

      @@Riskteven I think the real point is no need of computer to make things happen and easy to follow electricity for some. Computerized items add abit more to understanding due to it's nature NOT to behave logically

  • @75slaine
    @75slaine 5 років тому +1

    That was so cool. Nicely explained.

  • @AJB2K3
    @AJB2K3 5 років тому +3

    Oh Schmitt, I fell asleep in the middle of that and having to watch this again.

    • @DrexProjects
      @DrexProjects 5 років тому

      Napping if fine. I do that too. But this was a very informative video. Kudos to the up-loader. I watched it twice also.

    • @AJB2K3
      @AJB2K3 5 років тому +1

      @@DrexProjects you missed the pun!
      Yes, this is very informative as I don't know any thing about schmitt triggers.

    • @HazeAnderson
      @HazeAnderson 5 років тому

      I got some mislabeled logic chips and turns out they were real pieces of Schmitt.

  • @SidneyCritic
    @SidneyCritic 5 років тому +1

    Physically hearing and seeing what gating is in audio certainly explains what it is more clearly. I always wonder what Julian is talking abut with his vocoder.

    • @GadgetReboot
      @GadgetReboot  5 років тому

      I need to get caught up on what he’s doing over there with that project and all those PCBs that keep coming in. I’ll have to do a binge session. Seeing circuits behaving on the scope even in a data sheet is always helpful, for example I knew that noisy inputs would cause extra output transitions but I didn’t initially know that if the input stays in a certain middle voltage, the output may also be stuck somewhere in the middle and not officially be high or low. Seeing the picture clears it right up.

  • @HazeAnderson
    @HazeAnderson 5 років тому +2

    I have to ramble on now 😂 because the CMOS version of this chip (the CD4093) is one of the 1st chips that I worked with on my quest to build oscillators. Since then I have discovered a vast chasm between musicians who use electronics to create and manipulate sounds and electrical engineers who have the ability to educate those musicians but not the direction of where to focus. For example, as a hobbyist who manages to build this on a breadboard, there is the problem of translating the audio signal produced by the oscillator to industry standards like line level out in dBu (referenced to .775V without regard for impedance or rather, as if impedance might be 600 ohms) or even in consumer level dBV (referenced to 1V because marketers thought that would simplify things 😂). And it's just a matter of adding a voltage divider.* 😂 But say the words "voltage divider" and the musician/electrical hobbyist goes running for the hills. Maybe it's better than way, I dunno 😏 I did warn you this was going to be a ramble, right? (* to be fair it's majorly a matter of being able to measure your signals but that does require a fair bit of education)

    • @GadgetReboot
      @GadgetReboot  5 років тому +2

      If I keep going down this audio generating path, ultimately I will run into this very issue and if so, I hope I can find a solution that I can present. Another project in the long list of projects!

    • @DrexProjects
      @DrexProjects 5 років тому +2

      @@GadgetReboot I am a musician and am thinking of doing a video or 2 on sound effects. I have made a few recordings on Reverb Nation. I think I will start my next video with an excerpt ( Just a tease )from one of my songs.

    • @GadgetReboot
      @GadgetReboot  5 років тому +2

      Definitely do sound effect videos, and a song clip. I hope to put together another sound effect thing soon but it will have to come after some pre-requisite videos building up to it. I need to assemble the 555 circuit boards I just received and that will be used in one of the circuits eventually if I can remember how I did it so long ago.

  • @DrexProjects
    @DrexProjects 5 років тому +1

    That looks like one of the pile of chips I sent you. How does it compare to the CD74HC00E ?

    • @GadgetReboot
      @GadgetReboot  5 років тому +1

      That’s the pile it was from! The 74HC00 would have a struggle with noisy inputs and give quirky outputs but I didn’t try it with the resistor capacitor network to see if that’s considered too slow or noisy.
      Maybe if I take external input signals from elsewhere off the board there would be more trouble with noise. I also didn’t look into maximum frequency between Schmitt and normal gates if there is a difference in what we can achieve. Maybe eventually I will look at that as I play around more.

  • @KenHeinrich
    @KenHeinrich 5 років тому +1

    Well this would be a good way to get a higher frequency PWM for output control by creating a high frequency constant output and the using the regular PWM fro the controller to modulate that for the final output control.

  • @billfusionenterprise
    @billfusionenterprise 5 років тому +1

    FYI , if anyone is interested in making more Schmidt oscillators, do a search for cd40106 or cd4093 oscillators. You will probably find the Weird Sound Generator from "Music from outer space" and several others

  • @GnuReligion
    @GnuReligion 5 років тому +1

    Wow, you are stocked with logic gates.
    Kind of unrelated: A problem that drove me nuts for months, is how to build a single circuit, with a relatively simple adjustments, that stably oscillates both high speed (mhz) crystals, as well as low speed (watch) crystals.

    • @GadgetReboot
      @GadgetReboot  5 років тому +1

      I have a collection of old crystals laying around somewhere and at some point I’m probably going to look at making inverter oscillators with them so I might be driven crazy also because I always tend to go down paths I never would have expected existed.

    • @ArjanvanVught
      @ArjanvanVught 5 років тому +1

      I have observed that many internet pages are wrong with showing a Smitt-Trigger in high speed MHz crystal circuits. Just an inverter works fine. See middle of page -> www.orangepi-dmx.org/orange-pi-dmx512-rdm/ws28xx-configuration/prototype-boards/multi/4-output

    • @DrexProjects
      @DrexProjects 5 років тому +1

      @@GadgetReboot Yer awesome.

  • @aisegamecollins1723
    @aisegamecollins1723 3 роки тому

    good and appropriate

  • @ifell3
    @ifell3 3 роки тому

    Is it possible to get up to 20000 Hz