I dont understand how all of our teachers can be so bad at explaining this stuff. It makes perfect sense if explained well.. i wish this guy was our teacher :) great video!

@FoolishEngineer

2 жыл бұрын

Thank you so much for watching!! Please don't forget to subscribe to our channel

@davebutler3905

Жыл бұрын

It's often because the teachers don't really understand it themselves.

@muralika6477

6 ай бұрын

There is a scarcity of passionate teachers who understand the concepts. Most of our teachers work to pay bills and they don't know to do anything else.

@noliclores858

3 ай бұрын

👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎👎!!!!🤣🤣🤣🤣🤣🤣🤣🤣🤣

@nishantthakur4181

Ай бұрын

that is INDIAN education system,,,, welcome

Thank you for this educational explanation and Bravo for the quality of the animations. In fact, I subscribe to your channel. Happy New Year .

@FoolishEngineer

2 жыл бұрын

Thank you so much, this means alot to me

OMG! It gets more and more sophisticated after the capacitor dropper circuit! I thought we could DIY a simple power supply which has power factor of near to 1.

@FoolishEngineer

3 жыл бұрын

Thank you so much for watching!!

Love it, thanks!

@FoolishEngineer

3 жыл бұрын

Glad you liked it, thank you so much for watching

I just appreciate your efforts 🙏...great explanation

@FoolishEngineer

3 жыл бұрын

Thank you so much, Glad you liked it!!

Tq annayya (Brother)❤....

Very ingenious. Needs to go more and more .

@FoolishEngineer

3 жыл бұрын

Sure!! Thank you so much for your feedback!

Thank you for the wonderful educational videos

@FoolishEngineer

Жыл бұрын

Glad you like them!

Wow.This is so cool....Thanks man

@FoolishEngineer

3 жыл бұрын

Glad you like it!

Well done sir, great.

@FoolishEngineer

3 жыл бұрын

Thank you so much

I'm going to have to watch this again a few more times. It was explained extremely well, but I still got lost about 3 minutes near the end of the video. I'm thinking I might slow down the speed 0.75 and absorb what I missed. Thank you sincerely sir. You are a very very good teacher, that's why in the end I'm confident I will understand 😊

@FoolishEngineer

Жыл бұрын

Glad it was helpful!

Thanks for an excellent and clear explanation....

@FoolishEngineer

2 жыл бұрын

Thank you so much for watching!! Please don't forget to subscribe to our channel

My experience with inductors is that they're more efficient, in continuous conduction mode. It seems that the Eddy losses in the inductor core are much higher in critical conduction mode, because the lower effective switching speed allows deeper penetration of magnetic flux into the core. At higher frequencies, the skin effect reduces the conductive cross section, reducing overall core loss, despite a possible increase in hysteresis loss.

Thank you sir,i got depth information by this video

@FoolishEngineer

2 ай бұрын

So nice of you

Thank you!

@FoolishEngineer

2 жыл бұрын

Thank you so much, Glad you liked it!!

I love this channel! Great presentations must take enormous effort to produce.

@FoolishEngineer

4 жыл бұрын

Thank you very much!

Why are my diaphragm air pump pulling 2x as much as the rated power? I have 4 pump running at the same time, 2x 85w+ 1x 55w + 1x 22w. So the total is supposed to be 247w or 1.12amps. But why my ammeter is constantly reading at 2.2amps? Is my power factot 0.5? How can correct this?

Really nice need more and more videos electrical related 😉

@FoolishEngineer

3 жыл бұрын

Working on it!

why do we multiply the error signal (which is the output of the comparator, comparing the output voltage and REF signal ) with the input voltage? The output of that multiplier is compared again with a current signal to feed the switch driver. My point is, Is it possible to compare a voltage signal with a current signal ?

Think you

Thank you soooooooooo much❤

@FoolishEngineer

3 жыл бұрын

Thank you so much, Glad you liked it!!

Excellent Content .. Thank You for sharing .. Cheers :)

@FoolishEngineer

9 ай бұрын

Glad you enjoyed it

professor the input current of inductor will not like sine as the inductor add harmonics to the signal. the circuit between DC to DC and rectifier bridge is boost dc dc converter

Good day I have been repairing smps since a while .. but i have some really weird issu that is still out of my knowledge range .. smps works fine and pfc as well .. the problem is the pfc voltage 400~405 dcv starts dropping slowly until it reaches 350v then the whole smps turns off .. no phiscally faulty or damaged components mosfets and pwm controller ic fine just an unknown leakage couldn't find or understand what causes it

Thank you for this interesting explanation. Just I find that the mosfet is kind of short circuiting the bridge rectified output. Isn't it?

Is it correct to say the switching of the inductor by the transistor forces current to keep flowing in phase and negates the capacitor behaviour of making current shift from phase. Is that the main principle why the correction takes place?

Your explanation is ohhhhho too good brother appreciate your hard work Please make video on components like MOSFET transi,etc

@FoolishEngineer

Жыл бұрын

Thank you so much! I have already made videos on MOSFETs. You can check it on my channel

8:17. I don't understand how the voltage error is multiplied by current reference to generate a current signal. Can someone explain?

Thank you so much sir. I am implementing this circuit (CCM) in my 1500 watts universal input AC SMPS power supply.

@FoolishEngineer

3 жыл бұрын

Great !! All the best.

So nice

Nice one. Ta

How does Partial pfc outdoor unit of air conditioner circuit work? (IGBTs for Partial Switching PFC )

Great

Nice sir

awesome explained 👍

@FoolishEngineer

3 жыл бұрын

Thank you so much, Glad you liked it!!

Thank you

@FoolishEngineer

2 жыл бұрын

Thank you so much for watching!! Please don't forget to subscribe to our channel

给力！

@FoolishEngineer

3 жыл бұрын

非常感谢

in The India. perfect!

Very good video Kindly explain for inductor design

@FoolishEngineer

4 жыл бұрын

Ok soon

ek no. bro

@FoolishEngineer

2 жыл бұрын

Thank you so much, Glad you liked it!!

Nice Video, Can you make video about active harmonic filter? and total harmonic distortion

Thank you very much for the well explained and easily digestible lectures. May I ask you what kind of software do you use for making those slick waveforms in the video?

@FoolishEngineer

2 жыл бұрын

Thank you so much for watching!! Please don't forget to subscribe to our channel after effects

Very good sir ji 🙏🙏

@FoolishEngineer

3 жыл бұрын

Thank you so much, Glad you liked it!!

Can we use power factor circuit for 50 khz range

Very good sir ji

@FoolishEngineer

3 жыл бұрын

Thank you so much, Glad you liked it!!

Hello there! I was actually building this circuit on PSCAD. What do I use for ref at the first comparator because its only shown as a label on your video? Is that just a DC value with which Vo is compared?

@FoolishEngineer

2 жыл бұрын

it is just for representation. actual feedback is quite complicated

Sir please tell me the operation of with PFC and without PFC diffence, i want to know the without PFC operation which elements i have remove

Wow

could u plz tell me can we implement the same for sepic converter. if so how i mean control logic

@FoolishEngineer

3 жыл бұрын

It is possible, but I am not sure about the control logic. Although you can use ASICs for the control.

👍

The US hasn't used 110 volts since the 80's. It's 120 volts. Good video.

@FoolishEngineer

3 жыл бұрын

Okay, Thanks for the information!!

Hello there, hope you are doing well; I have a question: As you explained when the power factor correction is made- by PFC block, the input waveform of current becomes sine-like again. But I am curious to know what happens to the output waveform of current. What does it look like?

@FoolishEngineer

Жыл бұрын

It becomes a dc current at the output

Nice explaination sir !! Could you please tell how to make the hardware of pfc boost converter... it would be helpful...

@FoolishEngineer

3 жыл бұрын

Thank you so much!! there are multiple references out there. you can check any application note of a PFC ASIC and build a circuit based on that.

Brilliant!!

@FoolishEngineer

3 жыл бұрын

Thank you so much!!

Dear teacher, Do you know any universal input active rectifier that operates with both 1-phase and 3-phase inputs?

@FoolishEngineer

3 жыл бұрын

No, i am sorry

Wonderful explanation 🤗 TQSM

@FoolishEngineer

3 жыл бұрын

Thank you so much for watching!! Please subscribe to our channel

when turning on a device, a peek current flows thru the aperatus and the grid like switching a light bulb a lot. can make it break it sooner then useal.

@steelbrotherhoodof2359

Жыл бұрын

a peek current is bad for your aparatus. wich happens moatly when switching it on or off.

what about that method using triangle waves in a high frequency (for example 50 or 100 khz) and the reference signal and comparing them?

@FoolishEngineer

3 жыл бұрын

Can you please elaborate on this?

how about reference multiply , how it works

very good explanation sir...if possible can you explain with PI controller

@FoolishEngineer

3 жыл бұрын

sure, I will do as soon as possible & please don't call me sir.

thank you!!!!!!!!!! Can you do Simulink simulations with values ?

@FoolishEngineer

3 жыл бұрын

I'll try!!

Is it possible that that method doubles the voltage from the output of the bridge rectifier? Thanks

@FoolishEngineer

3 жыл бұрын

No, it doesn't double the voltage at the output of rectifier

Hi, can you please provide some examples/links to simulate PFC circuits using LTSpice?

@FoolishEngineer

2 жыл бұрын

You can use any example or application circuit from LT website using their IC

Isn't it easier to say that instead of the short current peaks that occur at 320VDC, increasing the voltage to 380VDC at the input results in longer current peaks? And it brings the current consumption closer to the voltage. It is not?

What will happen if we change the ac source with a high voltage dc source ? Can it damage the PFC unit ? E.g. instead of 230v AC we supply 330v DC .

@FoolishEngineer

3 жыл бұрын

If you are using DC power supply then you don't need PFC. Just remove it.

@avinraikwar3650

3 жыл бұрын

@@FoolishEngineer yes that was my first option but I am using server power supply which has very compact PCB and my dc source is not stable it's a 9 series connected solar panels who's open circuit voltage will be 380v dc and under different conditions it may be 280v ,the server power supply has boost PFC, it's output is 400v dc constant under load and no load its constant , what If we apply dc to the rectifier ? The PFC will have any issues ?

Show same topic for high power application

What is a d-sealing capacitor... isn't it smoothening capacitor?

👍👍👍🙏

@FoolishEngineer

2 жыл бұрын

Thank you so much! Please show support to my video with Super thanks.

Hi bro nice explaining. I have a question. I am online gamer and we found out after so many years because of weird input lags and other things that the real problem is the reactive current. And nobody know how we can reduce this reactive current in our pc´s and monitors with the internet router box. We really need help because this Reactivecurrentcompensators are toooo expensive and not good for a private house or apartment. its too big. pls help us anyone.

@nemesiz7175

Жыл бұрын

we need a device which we can plug all our devices in it with a really good pfc. we never heard about this electric things but its very interesting.

Sir. As we are converting ac to dc by using rectifier, why power factor is there in DC. Can u please explain sir!

@FoolishEngineer

3 жыл бұрын

Yes. Thank you so much for watching!!

maybe.. a dc towards dc, converters is just a transformator. that two coil thing around a metal block. that works with a magnetic field. for example makeing from 12 volt , 6 volts. kind of thing.

@steelbrotherhoodof2359

Жыл бұрын

can also make from 12 volt 12 volt. direct current.

sir can u make complete simulation on this topic

@FoolishEngineer

3 жыл бұрын

I'll try and do it soon!

3:49 This diagram is confusing. What do ">75W" and "

And how will we check the pf ?? And where does that component connects??

@FoolishEngineer

3 жыл бұрын

www.yourelectricalguide.com/2017/01/power-factor-meter.html#:~:text=Power%20factor%20%3D%20Wattmeter%20reading%20%2F%20(,Voltmeter%20reading%20x%20ammeter%20reading).&text=This%20method%20involves%20mathematical%20calculations,the%20load%20is%20varying%20continuously.

класс

@FoolishEngineer

3 жыл бұрын

Thank you so much for watching!!

please explain llc too......pfc+llc

@FoolishEngineer

4 жыл бұрын

Sure, I'll add in my list

😘😘😘😘😘😘😘😘😘😘😘

Can you provide matlab file of this pfc boost converter?

@FoolishEngineer

3 жыл бұрын

I am sorry, I don't have the simulation file.

You mention passive PFC uses an inductor, but you forget to explain WHY and HOW adding an inline inductor improves power factor.

@FoolishEngineer

3 жыл бұрын

Sorry!! I'll try next time!! thank you so much for your feedback!!

7:36 The current of the circuit is what? Couldn't understand your pronunciation. ....Oh, "adjUsted". Put emphasis on the u.

Thanks, but plz work on your accent.

@FoolishEngineer

3 жыл бұрын

I will try my best, Thank you

Is it part of future made SMPS ref @greatscoot PFC vid

Where does REF come from?