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Yes, you are right. The det(A11) in Example 3 should be 10 times larger. The final answer is correct though and verified with the simulation results. Thanks for your feedback!

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Eyvallah 😊

The basic idea of root locus design method is the same if the system has complex poles or zeros. If you want to get more in detail about this, you might consult Modern Control Engineering, K. Ogata.

Evet, Türk'üm. Allah razı olsun 😊

Glad you liked it! Share the knowledge 😊

Thanks for your appericiation 🙂 See also the other video about Precision Half-Wave Rectifier: ruclips.net/video/wL-HRh5JcEs/видео.html. This video gives some more background about the topic too.

Thanks! Great to know that you liked the video 👍

MONSTRO OU NN? THANK YOU VERY MUCH!!!!!!!!!

Great to know that you liked the video 👍

​@@SenaiPindaYou're welcome!

Great to know you liked the video 😊👍

You are welcome! Yes, in practice, it will matter which diode you will use. This holds actually for all components.

Thanks for your message. The simulation files and more details of a similar design is given here in this video: ruclips.net/video/p5q5jMvsjto/видео.html

Thanks!

What are you calculating with this expression?

@@CANEDUX the resistance R

​@@stefano.a You need to consider the base currents also. I discuss this in great detail in this video. Check it out 👍

@@CANEDUX I saw the video but the results you obtained it is not much general because it depends on beta of BJT. The simulator is clear: try to put 7100 ohms value on the resistor and the result 4mA is the current independent of beta value as beta is mantained high.

@@stefano.a The BJT in practice will not have a beta which is infinite, so you need to take the base currents into account. The 4 mA in the design is not equal to the reference current. This is what you try to say, but it is not correct. I also have given and discuss the formula which relates the reference current to the collector current of Q4. This is all in the video.

Thanks for your comment. Yes, you are right. That is in this case faster :) but only if the angles are equal to each other.

You're welcome!

Thanks for your message. I advise you watch the 2 parts video about the Buck Converter and Controller Design. Part 1: Buck Converter Design in Open-Loop: ruclips.net/video/fE1lxyE7ILI/видео.html Part 2: Buck Converter Design in Closed-Loop: ruclips.net/video/p5q5jMvsjto/видео.html The modulator is assumed to be frequency independent, thus a constant. The actual details are also discussed in the videos. Worthwhile to watch them both.

Glad to know you liked the video 😊

Thanks for your message! Great to know you achieve success 👍 In general, the modeling can be done in many ways. There is s famous saying: "All models are wrong, but some are useful". Modeling of a BJT or any other electronic device depends on the parameters that determine the functionality of that device. Using CCCS or VCCS is not necessarily correct or wrong, but it might be more intuitive and easier to use a specific model. Again, Thevenin's therom is not coupled to this modeling.

@ Do you have any videos where you calculate a Thevenin equivalent circuit using the CCCS or VCCS approximation of a transistor?

​@@PunmasterSTP Example 5 in this video discusses this: ruclips.net/video/X4KtGLvD4iI/видео.html. Example 6 uses Norton's theorem, which is similar to Thevenin's theorem.

Thank you very much for your nice message 👍 I appreciate it 😊

@@CANEDUX You are most welcome! Tomorrow I might try to find a video on calculating equivalent circuits with dependent current and voltage sources, as well as ones with transistors.

​@@PunmasterSTP I have a video discussing dependent sources in detail. ruclips.net/video/X4KtGLvD4iI/видео.html In this video, there are many examples given, also about Thévenin Equivalent Circuit with a Dependent Source

@@CANEDUX Dependent sources? More like "Dang good resources!"

@@PunmasterSTP I really enjoy this 🙂Thanks for you nice comment and dedication to watch the videos!

That is really great to know 👍 I am happy that the video is helpful 😊 Check the playlist about Root Locus Design on this channel for more videos. Good luck with your exam 👍

You can use this approximation, but it will never be exact.

@@CANEDUX That sounds fair.

In electronics design using discrete components, four resistors basing is still used because it is fairly easy to use. However, for more stable designs, a constant current source is much better for amplifier design. See my playlist about IC biasing and differential amplifiers on this channel. About the Thévenin's Theorem on this circuit. The circuit is decoupled at the base node and an equivalent circuit is placed at the left side of the base node. This will produce the exact result. Other methods will give an approximate result.

@@CANEDUX So to confirm, the transistor is taken completely out of the circuit (i.e. replaced with an open) to calculate the Thévenin resistance and voltage, right?

​@@PunmasterSTP That is correct. You might want to watch this video about Thévenin's Theorem: ruclips.net/video/-82oP4y-uXo/видео.html This will help to get the idea much better I think.

@ Thank you! It's been a while since I've studied circuits so I could definitely use a refresher.

​@@PunmasterSTPIt is always good and healthy to refresh 😊

The emitter resistor behaves as controller. That is also the reason for using it in the four resistor transistor amplifier circuits.

@@CANEDUX We do all need some control...

​@@PunmasterSTPIndeed. Power without control is meaningless and useless.

@@CANEDUX Yes, like a circuit with a shorted load.

Thanks for your nice message! Great to know that you liked the videos. 👍 I work also as a lecturer and researcher at the university in the Electrical Engineering department. I manage this complete RUclips channel myself 😊

@@CANEDUX That's awesome! What institution are you at?

​@@PunmasterSTP You can find more info from my LinkedIn profile: www.linkedin.com/in/canmehmet

@@CANEDUX Cool, thanks for the link(edin)!

You are welcome.

Thank you for your nice comment! Great to know you liked the video 👍 It is free, but you can support by liking and sharing the videos and knowledge 😉

@@CANEDUX I definitely like good videos and share them when I can. I also hope that some of my quirky comments can help spark discussions.

​@@PunmasterSTP Thanks for your support!

Thanks! Glad to know you liked the video 👍

Bu dersi Hollandaca anlatıyorum. Genelde dersleri İnglizce veriyorum ve videoları o şekilde hazırlıyorum. Türkçe ders talep eden de zamanla artmaya başladı, herhalde Türkçe ders hazırlamanın vakti geldi.

You are welcome!

Faydalı bulduğuna çok memnun oldum. İmtihanlarında başarılar dilerim.

Thanks for your nice message. Great to see you liked the video 👍 I used many different books and also created my own way of working out the problems. I recognized that people really needed a step by step approach, which was not always clear from the books. That is one of the reasons for these videos. I can recommend the following. 📚 Resources 👇 [1] Discrete-Time Control Systems, K. Ogata [2] Modern Control Engineering, K. Ogata [3] Control Systems Engineering, Norman Nise [4] Modern Control Systems, Dorf & Bishop [5] Digital Control Engineering, Fadali & Visioli

You are welcome 😉

Eyvallah. Faydalı bulduğuna memnun oldum 👍Paylaşalım 😉

The placement of the PI controller zero (z_pi) is done after the design of the complete PD-controlled system. This is an arbitrary choice, but you need to be careful with where you place this PI controller zero. As I explained in the video, the choice of the PI controller zero is done such that the negative phase contribution of the PI controller will not effect the PD-controlled system too much. You can place the PI controller closer to the vertical axis (will make the system slower) or farther away from the vertical axis (will cause additional action and the poles we assume to be dominant will not be dominant anymore).

@CANEDUX thank you for this great detailed answer. You are a hero

​@@muhammetmetinaltuncu3468 Great 👍 Share the knowledge 😉

Thanks for your message and great to know that you liked the video 👍 Using the Root Locus Design, we assume the two closed-loop poles are dominant and determine the dynamics of the complete system. This is, of course, an approximation, thus we might need to fine tune our initial design and for that we use MATLAB.

The bandwidth is discussed in this video. You can also see the results and calculations from 09:00 in this video.

I am making it without datasheet,I need to know why I choose everything on the project

This is playlist of LC Ladder Filter Design: ruclips.net/p/PLuUNUe8EVqlk3vJPaVtZwA93qVDDtktY9

Nice 👍

You are welcome! Share the knowledge :)

Great to know! I am happy that the video is valuable. Share the knowledge :)

Thanks! Share the knowledge 👍

The T(s) is the closed-loop transfer function of the complete system and Gc(s) is the transfer function of the controller only. They are indeed different, because the T(s) includes the plant transfer function and the effect of feedback. You can calculate the closed-loop transfer function using Mason's gain rule.

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First, you need to consider the DC levels at the transistor nodes, so that all transistors are operating in the linear region. The voltage gain of the circuit in this video is around 1050. Making the input let's say 200 mV peak, should result in an output voltage of 210 V, which is of course not possible. Again, you need to stay below the maximum possible DC levels of the transistor nodes. This is done using DC analysis.

Selam, undershoot yok etmek için belirli frekans veya frekansları filtereleme gerekiyor. Undershoot, right-half plane zero frekansı ile ortaya çıkar. Mesela allpass filter işe yarayabilir, fakat duruma göre daha başka işlem gerekebilir.

@ hocam sistem 2. Dereceden olduğu için sanırım filtreleyemedim

​@furkandemir7735 Dediğim gibi, sistemdeki pole ve zero frekanslarını bilmek gerekiyor.

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Thanks! Great to know you liked the video. I have a separate video list about single-stage transistor amplifier where I discuss the full details. Check this playlist: ruclips.net/p/PLuUNUe8EVqlndhdohoZ23M1-BICayBJFE You can also start with this video just to see the derivation: ruclips.net/video/y5eO02lGUyg/видео.html Remember that g_m = r_pi*beta.

Thanks for your message! Glad you point it out. Indeed, e1 = 1. The number of right half plane poles are two and not one. This will not change the conclusion for the stability; the system is still unstable.

@@CANEDUX currently I am looking at your control playlist which is very helpful to me.Thank you for the playlist and the feedback.

@@yagzkaptan6631 Great to know you liked the playlist and the videos! Share the knowledge :)

Thanks for your message. It is a good point. The VCC is actually required to check the bias conditions and the operation region of the transistors. We need to check that all the transistors are operating in the linear region in order to use the formula for the voltage gain. I have not checked this, but you can see in the simulation results that the DC collector voltage is larger than the DC base voltage, so the transistors are indeed in the linear region of operation. Great to see you liked the video 👍

@@CANEDUX Oh, I see. Thank you for the clarification.

​@@sharptrickster You're welcome!