This is the best technical video. Please post this kind of videos. Very helpful sir.

@MarcosAlonsoElectronics

2 жыл бұрын

Thanks for your support!

Outstanding Job.

@MarcosAlonsoElectronics

Жыл бұрын

Thank you!

It was a useful video, sir. Can I know whether the formula for gain and phase are the same for the buck-boost converter or is there any difference?

@MarcosAlonsoElectronics

2 жыл бұрын

Thanks for watching. The process is general. The equations are valid for any dc-dc converter.

Thanks sir. for your lecture about FRA. that way, is it possible to measure loop gain and disturbance input voltage and output current ?, to verify our goal smps design

@MarcosAlonsoElectronics

2 жыл бұрын

Thanks for your comment and for watching. Yes, it is possible to do all that. The loop gain measurement is explained in the following video LTspice #7: kzread.info/dash/bejne/epWqqLBth6eej7g.html

Professor, it is possible to measure the input to output frequency response? I have tried to put the sine wave connected to the input side, but it does not work.

@MarcosAlonsoElectronics

2 жыл бұрын

Yes, there shouldn't be any problem. Send me an email with your file and I will take a look. Thanks for watching and for your question!

Dear Professor, so lets assume that Vpp is 5V then, in this case are we going to see A_o of 6 dB? Thank you for your videos.

@MarcosAlonsoElectronics

3 ай бұрын

Yes, that is correct, if Vpp=5 V we have: Ao= 20*log10(5/(5*0.5)) = 6.02 dB

@pablomarco5118

3 ай бұрын

Dear Professor, @@MarcosAlonsoElectronics, thank you for your reply. This relationship is a little bit confusing to me. I will try to find book section about it. Your videos are quite informative thank you again.

Sir, can i use the same way to measure the open loop gain of ldo?

@MarcosAlonsoElectronics

2 жыл бұрын

Yes, this is a general procedure. It can be used on any dc-dc converter. Thanks for watching!

Dear Professor, I would like to ask you why did you write the arguments of sisusoids in degrees @34.19?

@MarcosAlonsoElectronics

3 ай бұрын

Good question. This is because, curiously enough, the sin and cos functions work in degrees when used in .measure statements. To see this, try this example that calculates the average value of sin^2 function: github.com/marcosalonsoelectronics/misc/blob/main/test-sine-function.asc If you put the angle in rads it won't work

professor, why the frequency plot DC gain value is not Vin?

@MarcosAlonsoElectronics

2 жыл бұрын

Because we have to consider also the gain of the PWM modulator, which is 1/Vpp, where Vpp is the peak-to-peak voltage of the sawtooth waveform of the PWM modulator. Our plant is formed by the PWM modulator + the buck converter as shown at 1:14. Thanks for your question and for watching!

what comparator did you used? is it built in on LTSPICE

@MarcosAlonsoElectronics

2 жыл бұрын

This is a component named MyComparator. You can download it from my website at: www.unioviedo.es/ate/marcosaa/#RESOURCES To find out how this component was created, please watch this video: kzread.info/dash/bejne/fIKYl8GJkdjOdLg.html Thanks for watching!

@electronicsdetective573

2 жыл бұрын

@@MarcosAlonsoElectronics , thanks i will try this LLC circuit

Excellent videos / Can you help me with an ltspice simulation on a power supply? This will have an FRA Fourier math in it.

@MarcosAlonsoElectronics

4 ай бұрын

Hello, thanks for your comment. I am very busy but I will try to help. Please, contact me by email.

What amplitude of PWM u used ? Can you share the setting you made in PWM?

@MarcosAlonsoElectronics

2 жыл бұрын

The duty cycle perturbation is 1V out of 10V of the sawtooth waveform. So it is 10% perturbation. You have the link to the file in your comments below. Thanks!

@asadrao5147

2 жыл бұрын

@@MarcosAlonsoElectronics It's not telling me the name of comparator, it's telling me comparator is missing when I open file Tell me the me name of comparator through I should search in "Place Component".

@MarcosAlonsoElectronics

2 жыл бұрын

@@asadrao5147 The comparator is available from my website. You have to install it on your LTspice folder. Video LTspice #3 explains how to do this. Please, take a look.

Comparator is missing what setting and which comparator should I use?

@MarcosAlonsoElectronics

2 жыл бұрын

This is an ideal comparator. We made this component in video LTspice #5: kzread.info/dash/bejne/fIKYl8GJkdjOdLg.html The component is available from my website. Thanks for watching!

Files are available at: github.com/marcosalonsoelectronics/LTspice-6

Can you send the simulation of this circuit?

@MarcosAlonsoElectronics

2 жыл бұрын

Hi, thanks for watching. Please, find the link to the file below. drive.google.com/file/d/1WMiK9ELG_zw4Ff-AwMgwFDObuBQ3NIUE/view?usp=sharing

Can you please share its simulation file?

@MarcosAlonsoElectronics

2 жыл бұрын

Yes, the link is a few comments below in your previous comment two weeks ago: drive.google.com/file/d/1WMiK9ELG_zw4Ff-AwMgwFDObuBQ3NIUE/view?usp=sharing Thanks for watching!