+Michael Padovani You can buy a Schmitt trigger for sure, usually 4 or 6 in an IC. But now that you know how to make one, you can buy a quad opamps, use 1 or 2 for STs and have 3 or 2 left over to use as comparators or amps. My favorite EE, the Woz, always says good engineering is using as few chips as possible.
i dont think you can properly debounce a switch with this. depending on the age of a switch, it can actually go up to the rail voltage, then back down to gnd a few times. the controller would still register several changes of the signal. the schmitt trigger is used to prevent slowly rising signals from triggering multiple times due to the noise. for example analyzing the frequency of a sinewave.
+fredlllll Schmitt trigger hex inverters are used daily for debouncing digital signals. I did it through out the 90s and early 2000s as a design engineer for Bayer Corp.
does it really work with a mechanical switch? as i said, i have one that opens and closes multiple times before it finally stays closed. how can a smitt trigger debounce that?
Like the acorn in ice age it smells wonderful, and someday I'm gonna taste it, until then I'll just have to use my imagination. Someone get this guy a white cat I think he swung around in a leather chair at the end of the video, and turned down the video at the muhahahaha.😳
To be honest, I do not see any hysteresis in the oscilloscopes display. Do you??? This is converting a quite perfect sine wave to a quite perfect square wave. There is no significant noise and no visible hysteresis. Whatever that oscilloscope is showing... it has not much to do with demonstrating the function of a Schmitt trigger. At least, the effect is that small that you can't even see it. I guess the resistor values are not appropriate. This is not very useful to teach how a Schnmitt trigger works.
This channel has had everything I’ve been confused about explained perfectly, including this, single handedly keeps saving my projects.
Great tutorial on a subject that years ago confused so many.
That's such an underrated video
Thanks man
Can you show how to clean up noise in a linear power supply using Schmitt triggers to clean the noises
As always concise and useful. Thanks :)
+Ehsan Zaery Moghaddam Thank you
I'm one of those that didn't know about it. Pretty cool. Can never buy enough electronics components!
+Michael Padovani You can buy a Schmitt trigger for sure, usually 4 or 6 in an IC. But now that you know how to make one, you can buy a quad opamps, use 1 or 2 for STs and have 3 or 2 left over to use as comparators or amps. My favorite EE, the Woz, always says good engineering is using as few chips as possible.
another great video!
should have shown an example of how to figure out the Hysteresis and what are some of the good thresholds to use.
thanks for the vid.
i enjoy theese short tutorials :)
+Frank Alvarez Thanks
Question Paul which op amp ic did you use? Would in your opinion a NE5532 Dual low noise op amp work well in this application? Thanks .
Great! Thank you.
3:00 Here is were my thumbs-up goes up high.
So the output voltage divider sets up your pktpk on the square wave? Nice video and explanation.
Can you please make a video explaining what is hysterisis and how is this related to a schimmit trigger? Thank you in advance
I did in 2019...th-cam.com/video/x3Uo53JlFLI/w-d-xo.htmlsi=B0xOZQ4gNjn-cmXw
@@learnelectronics Thank you very much 👍
that's awesome
Why the Schmitt didn't I think of that? I've always done debounce in software. Thanks for a great video!
+George Chambers Welcome my freind.
I thought the 741 op amp had a much slower slew rate .. something like 0.5V / micro second.
i dont think you can properly debounce a switch with this. depending on the age of a switch, it can actually go up to the rail voltage, then back down to gnd a few times. the controller would still register several changes of the signal. the schmitt trigger is used to prevent slowly rising signals from triggering multiple times due to the noise. for example analyzing the frequency of a sinewave.
+fredlllll Schmitt trigger hex inverters are used daily for debouncing digital signals. I did it through out the 90s and early 2000s as a design engineer for Bayer Corp.
does it really work with a mechanical switch? as i said, i have one that opens and closes multiple times before it finally stays closed. how can a smitt trigger debounce that?
Very interesting.
+J. Clowers Thanks
Aliens....lol
Yay for hysteresis , or as I call it, dead band.
Like the acorn in ice age it smells wonderful, and someday I'm gonna taste it, until then I'll just have to use my imagination. Someone get this guy a white cat I think he swung around in a leather chair at the end of the video, and turned down the video at the muhahahaha.😳
To be honest, I do not see any hysteresis in the oscilloscopes display. Do you??? This is converting a quite perfect sine wave to a quite perfect square wave. There is no significant noise and no visible hysteresis. Whatever that oscilloscope is showing... it has not much to do with demonstrating the function of a Schmitt trigger. At least, the effect is that small that you can't even see it. I guess the resistor values are not appropriate. This is not very useful to teach how a Schnmitt trigger works.
you left out the most important part, HOW TO USE IT!!!