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
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.
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
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!
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.
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?
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.
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
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.
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?
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.
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
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.
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.
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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.
Thank you for taking the right amount of time to explain this for a thick old head.
Subbed
Great videos that you produce. Thank you. Looking forward to the radio................................Berni
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
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!
Excellent educational video. Thank you for covering it in such great detail. Enjoyed it very much.
i loved this vid, especially sped up to x 1.5
thanks a lot for the lecture
Brilliant explanation!! Looking forward for the AM-FM radio videos.
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.
Looking forward to the series. Thanks
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?
Thank you so much, this video was very insightful.
Good video! Please add more!
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?
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.
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.
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?
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
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
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.
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.
How do you determine the value for R and C to create a 60 degree phase shift?
Since you are not having an external input what's the starting voltage of the oscillator?
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!
The gain and the attenuation can never be exactly equal, right? So what is making this circuit stable in the long run?
very amazing but very lack measuring parameters in the monitor.
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?
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.
Well done buddy.....
Thanks for the visit and watching my videos.
Is there way to determine the output amplitude ?
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
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.
Can we get the frequency down to 60Hz?
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.
what opamp did u use?
The 741, very common.
sir your web site do not work
Hello Terence - I don't have a web page, just the TH-cam channel. Maybe in the future.
proteusta çizsene devreyi ya proteusta neden olmuyor
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.
It is rarely anyone uses discrete components nowadays. Most parts come fully integrated in a size of the 1x1mm grain.
@@odissey2 as progress moves on, and technology becomes smarter, we become dumber.
@@rycka88 Yep. Unfortunately, now i can't solder parts even under microscope.