Відео

Hi sir when is your new video coming

Wow crazy…is amazing

Hundreds of LEDs make big screens!

What a wonderful video!

Hello Professor Alonso, I'd like to ask why do we need C1 here, is it for the DC Block? And R3 is used to adjust the DC current? I'm still a layman of analog circuit, so thanks a lot for your videos 👍and looking forward to your response!

Thank you Professor, do you have an example that is implemented in the digital domain in Qspice for the anti windup circuit as in your video PE #65 , thank you very much.

What should we do if we get a negative inductance value? In this case, T-model simulation is impossible?

Dera Sir. One sugestion: to explain the IC UCC3808/A and LM25037 and applications. And the type III controller/compensator.

thank you very much 🙏

Thank you Mr Alonso this looks really good, looking forword to properly trying these models out soon. Looks like lot of fun. I also hope that Mike will add the proper magnetic units so they show correctly on the graphs. Things like T(esla) instead of Volts etc. Cheers

Thank you for sharing this.

This is the best explanation on how to use this software. It is very precise, very well explained in every respect. Wonderful job!

Can i ask you some questions in your next live? I need some help with my tesis

Brilliant!

Thank you again Professor, I am using this topology to implement a solar charge controller with a digital control and an ESP32 microcontroller. I am glad to say that it works very well!

Any plan to do live streaming in future?

Great idea prof, looking forward to your future live streams ❤

hello professor, excuse me i have one question, in this video, 200kHZ frequency, how you obtained it? in this controller, you did not determine how you put 200kHZ in this IC? IS THERE any video for calculation frequency according to controller?

hello professor, thank you for your useful informations, i have a question, for calculating duty cycle in PWM Controller, which video do you prefer? do you have any education about it?

hello Dr Alonso, i hope you are well, I have one question, we can use this current-mode controller in this video for a PFC Z SOURCE converter or Forward converter?

20:16 There is a mistake here. The correct relationship between DC values Vi and Vo is: Vo=Vi*D/(1+rL/R). So in the final transfer function instead of factor Vo/D it should be: (Vo/D)* (1+rL/R) or just keep Vi. The difference is very small though since usually rL << R

17:09 Another typo here. At the bottom of the slide the correct equation is wc=sqrt(12)*f as shown previously. Also: fc=wc/(2*pi)= 0.55*f. Sorry!

20:00 The factor 0.85 is used to have the same DC output voltage in the simplified model as in the complete model. However, I realized later that by doing this we were also changing the amplitude of the perturbation of the simplified model. It is better to separate the DC and AC parts. See how on the corrected file available on GitHub: github.com/marcosalonsoelectronics/PE-71

13:52 There is a typo in the last equation. Instead of exp(sT) it should be exp(-sT). Sorry!

All files are available here: github.com/marcosalonsoelectronics/PE-71

Sir great video as always . I am currently started working on Current control research for over current applications . Any materials ,tips to follow and authors to refer . information reg this would be helpful.😀

hello Dr Alonso, I have one question, we can use this 2 output PWM controller for Forward converter or boost converter? Do you have any PWM controller in your youtube page that should be suitable for Forward converter such as: UC3842 IC. please guide me

hello Dr Alonso, I have one question, we can use this 2 output PWM controller for Forward converter or boost converter?

Hello sir, this is my simulation. It contains a 3 phase closed loop inverter and a 3 phase closed loop rectifier. For the inverter it has been successful, but for the rectifier it has not been successful. I still can't solve it, sir.

Would you recommend learning qspice or ltspice? For someone with now much knowledge on either

Hello sir, can you make a tutorial for simulating a 3 phase active rectifier in QSpice? Thanks

Every your video like a brilliant! Thanks for your work!

Thanks for the video. I downloaded the final model you provided, but however, the simulation stopped at a fatal error (Warning: Singular matrix. Check node D1 Fatal error: Timestep too small(1.25e-19) at t=4.51505e-14). Do you have any idea? I have added several resistors between nodes, such as D1 and D2, but the total simulation time is very long.

Thanks for this excellent lesson, professor 👍

❤ from India

Hola Sr. Alonso. Tengo una duda respecto a este tema, el comportamiento de un circuito secuencial asíncronico además de depender de las señales de entrada en cualquier instante dado, depende de los estados de los elementos de memoria o del orden en el que cambian las entradas? Sus explicaciones son exelentes.

9:17 The green line is the loop gain: T(s)=C(s)*k_pwm*Gd(s)*H(s). I forgot adding k_pwm to the expression of T(s) in the slide.

@MarcosAlonsoElectronics 1 year ago All files are available at: github.com/marcosalonsoelectronics/LTspice-19

All files are available at: github.com/marcosalonsoelectronics/LTspice-18

All files are available at: github.com/marcosalonsoelectronics/LTspice-17

Hello Dr, why there is no +Vcc and -Vcc for the operational amplifier?

Hello Dr, based on 14:09, the green line (loop gain) is the open loop transfer function of the system right ?

Hello Dr, based on 23:09, Why does the v(c) increase and why does the out current decrease even though the duty cycle increases?

All files are available here: github.com/marcosalonsoelectronics/PE-69

10:48 I have found that there is a mistake in the value of the flat gain between poles. The correct expression is the following: 20*log( (1+R3/R1)*R2/R3 ). Sorry about that!

All files are available here: github.com/marcosalonsoelectronics/FEMM-6

All files are available here: github.com/marcosalonsoelectronics/FEMM-5

All files are available here: github.com/marcosalonsoelectronics/FEMM-4

All files are available here: github.com/marcosalonsoelectronics/FEMM-3