This video looks at oscillators that employ the inherent phase shift between capacitors and resistors. An op amp phase shift oscillator and a transistor version are analyzed and tested
Пікірлер: 44
@brantbeck84875 жыл бұрын
One week until finals in E2 and I learned more in this 30 min video than in a semester of lecture. Thank you, thank you for an easy to follow video with simple explanations of the concepts.
@akolivancollins Жыл бұрын
i loved this vid, especially sped up to x 1.5 thanks a lot for the lecture
@DuardoEh4 жыл бұрын
Thank you for taking the right amount of time to explain this for a thick old head. Subbed
@ohmedarick16 жыл бұрын
As always Thank you for wonderful videos. You explain the theory so easy to understand and showing the results on the oscilloscope. Also, looking forward to more videos. Great day
@berniken65116 жыл бұрын
Great videos that you produce. Thank you. Looking forward to the radio................................Berni
@shvideo13 жыл бұрын
Excellent educational video. Thank you for covering it in such great detail. Enjoyed it very much.
@alalv86176 жыл бұрын
Brilliant explanation!! Looking forward for the AM-FM radio videos.
@LousyPainter6 жыл бұрын
Looking forward to the series. Thanks
@onkaramphore20345 жыл бұрын
Thank you so much, this video was very insightful.
@VoidHalo4 жыл бұрын
Wow simply amazing video. I was gonna subscribe, but apparently I already am. Kinda pisses me off I haven't seen anything recommended from your channel considering I regularly watch stuff like EEVBlog, Big Clive, Mr Carlson's Lab, W2AEW, Mjorton and Uncle Doug. Your channel's about on par with all of these. Thanks for posting this. It cleared up a lot of confusion.
@cooperchaopingzhang58824 жыл бұрын
Good video! Please add more!
@francispoirier73592 жыл бұрын
Awesome video. Best explanation I have found as of yet on RC oscillators. 1 question: What is meant by an RC section loading the previous RC section? This is the only part getting me confused. Thank you for this!
@SomeRandomPerson1635 жыл бұрын
Great video! But did you confuse placement of capacitors on first sheet (where 3 RC networks)? I mean seems it should be mirrored from right to left.
@acrobaticalpaca66753 жыл бұрын
Would it work in the middle of a big desert, or in space? Does it need the noise from other devices or can it work of of noise from space?
@ajingolk77162 ай бұрын
Its a great idea to generate 3 phase but the only problem is the tolerence of passif compenent i wish if there an IC that can do that
@flurng6 жыл бұрын
Many thanks for another interesting and informative video! I do have one quick question, however; why is R1 in series with it's respective capacitor, rather than in parallel, as R2 and R3 are?
@TheOffsetVolt6 жыл бұрын
The connection to the inverting input is that tricky virtual ground. So the end of R1 connected to the inverting input is a virtual ground and this makes it parallel to C1. Hope that helps and thank you for watching.
@Enigma7583 жыл бұрын
The gain and the attenuation can never be exactly equal, right? So what is making this circuit stable in the long run?
@rithikvinayaraj31893 жыл бұрын
Well done buddy.....
@TheOffsetVolt3 жыл бұрын
Thanks for the visit and watching my videos.
@tibetannoodles2 жыл бұрын
sir, no doubt that this was a great video for understanding the basic .... but im really fascinated to know , what pen are you using? Its really good for making rough workouts edit : nevermind sir , you using it on a laminated sheet
@ahmedbenamor48494 жыл бұрын
Is there way to determine the output amplitude ?
@uiticus2 жыл бұрын
How do you determine the value for R and C to create a 60 degree phase shift?
@fritzcanaway61182 ай бұрын
very amazing but very lack measuring parameters in the monitor.
@YoussefEl.6 жыл бұрын
My biggest problem is getting a high frequency oscillator (in the GHZ range). A transistor is surely the way to go because of the slew rate of the op amps, but even then, how can I verify the physical circuit if the oscilloscope is limitted to 100ish Mhz? How would you go about designing it?
@TheOffsetVolt6 жыл бұрын
Hello Youssef. Without test equipment, the best you can do is simulation. About the only thing youi'll be able to test are the DC parameters.
@jayelms27064 жыл бұрын
You can't get such high frequencies by just using solid state devices, this is why crystals were created. These solid state oscillators work only for low freqs. in the order of kilohertz, otherwise the wave loses stability.
@sussy19306 жыл бұрын
Since you are not having an external input what's the starting voltage of the oscillator?
@TheOffsetVolt6 жыл бұрын
The energy is supplied by the noise present in all electronic systems. That small amount of electrical noise is enough to get the circuit going!
@terencebarfield58646 жыл бұрын
Kind Sir it would be very nice to teach us the basics about dB's from the start > thus i can grasp themeaning for all types db's and use of dB;s in my circuits
@TheOffsetVolt6 жыл бұрын
I think I can do that. I have another video in the pipes so this one could be out in about 3 or 4 weeks, assuming the fates smile on me. Thanks for watching and for the feedback.
@alexloktionoff6833 Жыл бұрын
But if we will use light MOSFET let's say 2n7002 instead of BJT will it simplify things and improve stability? Do you know examples?
@uwepolifka45834 жыл бұрын
Very nice videos at all. I like the colpitts videos most. But I think in this video is something accidentally wrong. The gain box at min 2:41 needs to have it´s output at the left side and not at the right side otherwise the phaseshift will not work. At min 9:29 it is correct. The output goes into the capacitor and the resistor is a load to the capacitor and so on.
@Jm-my1rd3 жыл бұрын
Can we get the frequency down to 60Hz?
@TheOffsetVolt3 жыл бұрын
I've never tried but I am certain that it can be done. Let me know if you do it and what the results are.
@bahrilnugroho14744 жыл бұрын
what opamp did u use?
@TheOffsetVolt4 жыл бұрын
The 741, very common.
@terencebarfield58646 жыл бұрын
sir your web site do not work
@TheOffsetVolt6 жыл бұрын
Hello Terence - I don't have a web page, just the KZfaq channel. Maybe in the future.
@ndf49373 жыл бұрын
proteusta çizsene devreyi ya proteusta neden olmuyor
@rycka884 жыл бұрын
I hate electronic tutorials with ICs. You are learning nothing about discrete components. And OpAmp is bigger than transistor. Transistor is even smaller in SMD domain.
@odissey22 жыл бұрын
It is rarely anyone uses discrete components nowadays. Most parts come fully integrated in a size of the 1x1mm grain.
@rycka882 жыл бұрын
@@odissey2 as progress moves on, and technology becomes smarter, we become dumber.
@odissey22 жыл бұрын
@@rycka88 Yep. Unfortunately, now i can't solder parts even under microscope.