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.
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.
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.
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.
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.
