initially, at the beginning, the mosfet is off, no current flow through the primary coil, so there is no magnetic field induce EMF in secondary coil, 0 volt output, how come the mosfet turn ON if feedback Voltage to the gate is 0 volt?
I need to design a flyback conveter that can be adjustable input voltages. In that way i would be able to adjust output voltage. Could u give me some tips to make it possible, thank u
hi Kiran, it's a mistake in the video Sorry for the wrong formula shown. Due to losses the power transmitted by the converter will be more than the rated power hence the design consideration has to be for the power more than rated one so the formula will be ((o/p voltage x o/p current) / efficiency). I hope this helps.
@@FoolishEngineer Please mention this in the description as well. That will be helpful for others too. Because first I looked in the description assuming someone had asked and you might have updated in description but then I had to look in the comment :( Anyway the video is very nice and helpful.
2 questions. I have looked at a few abstracts. On some they use the reflected voltage to calculate n and on others they use the vin over out. Which is correct? Also if Bmax is specified by the core and it is not exceeded in the calculations then why do we need the air gap. I understand that the gap changes the slope of the BH curve but is it required in all cases. Thank you
1. The basics say, use the other method i.e. vin/vout, if your getting the results doesn't matter which method you use. 2. Apart from just slope change of BH curve it is responsible for many adverse effects.
Please bear with me I'm a beginner in electronics, ie started learning Vrpp =100 mVPP is assumption value or calculated, if calculated how. Same about current IL =2 AMP
can I boost 5vdc to 80dc and then pass it through an inverter control circuit 50HZ to get 80ac output? I can't use the conventional since I can't find a 5ac to 80ac step-up transformer
For such power, please don't use flyback converter. You can use Full bridge converter, where you can step up the output voltage also. by changing the turns ration of the transformer. Thank you so much for watching the video!
@@FoolishEngineer thanks a lot.. i will try to do it by full bridge converter. but what about the control and feedback in hardware and simulation work can u tell how to do it.
@@FoolishEngineer yes...Dot represents the start of winding i.e starting point of winding when u practically wind transformer on bobin... These starting points are exactly opposite for primary and secondary...i.e if core is of 4 pins(two pins each side)..then if winding at primary start at pin 1 of the primary then winding at secondary side should start at pin 2 of secondary ...for a flyback transformer...
According to my study, the dot represents the polarity of voltage or direction of current, where the dot is placed the current starts flowing through that direction. In this video, that's what we have shown, your statement is true, the dot in ebery reference toplogy circuit represents the initial direction of the flow of current.
I would suggest u to go through power electronics books muhaamad Rashid.....As I never heard Dot representing polarity...still I will search and tnx for hearing me😄
wah.................. madam ko mera pranam pahuche..........
Amazing! easy to understand and very nicely described and shown in the video!
Thank you so much, Glad you liked it!!
good ,clear !!!
Thanks for the great tutorial, Very clear and concise.
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Thank you! Really, such good explanation :)
thank you so much!!
Great job. Clear and succinct.
Glad it was helpful!
So helpful, saludos desde México 🤗
Glad you liked it, thank you so much for watching
I just subscribe ur channel ma'am.. bcoz of ur calculations & detail sequential explanations ..
Thank you so much for watching!! Please don't forget to subscribe to our channel
@@FoolishEngineer 🙄 i ve already subscribed ..
Good work! It's very helpful to me!
Glad it helped!
Very well explained bro, nc job...
Thank u so much bro
Nicely explained. Pl.take an example for TNY switch for fly back converter e.g 12V/5V.
Okay, thanks for the feedback
MY question:
Vin=24v, V0=4000V and IL=9mA.
can i use flyback converter??
or i should go for Full bridge converter?
Check your DOT orientation.... needs correction..
initially, at the beginning, the mosfet is off, no current flow through the primary coil, so there is no magnetic field induce EMF in secondary coil, 0 volt output, how come the mosfet turn ON if feedback Voltage to the gate is 0 volt?
I need to design a flyback conveter that can be adjustable input voltages. In that way i would be able to adjust output voltage.
Could u give me some tips to make it possible, thank u
I would check regarding it and soon I'll upload about the adjustable flyback converter.
can u please tell me how u calculated output power...u said output power =vout*iL*efficiency=55*2*0.85=93.5W, then how come it is 130W...Thank u..
hi Kiran, it's a mistake in the video
Sorry for the wrong formula shown.
Due to losses the power transmitted by the converter will be more than the rated power hence the design consideration has to be for the power more than rated one so the formula will be ((o/p voltage x o/p current) / efficiency).
I hope this helps.
@@FoolishEngineer Please mention this in the description as well. That will be helpful for others too. Because first I looked in the description assuming someone had asked and you might have updated in description but then I had to look in the comment :( Anyway the video is very nice and helpful.
@@MayankGour13 thank so much for the feedback, I have added that in the description
2 questions. I have looked at a few abstracts. On some they use the reflected voltage to calculate n and on others they use the vin over out. Which is correct? Also if Bmax is specified by the core and it is not exceeded in the calculations then why do we need the air gap. I understand that the gap changes the slope of the BH curve but is it required in all cases. Thank you
1. The basics say, use the other method i.e. vin/vout, if your getting the results doesn't matter which method you use.
2. Apart from just slope change of BH curve it is responsible for many adverse effects.
Please bear with me I'm a beginner in electronics, ie started learning
Vrpp =100 mVPP is assumption value or calculated, if calculated how. Same about current IL =2 AMP
Vrpp is an assumption and load current is what you have to check how much current your device needs, it is a requirement.
Is there a textbook that shows a circuit like this, where the gate of the mosfet is connected to the point between the output capacitor and diode?
No, it is just a representation of feedback, generally there has to be a potential divider which will scale down the feedback.
@@FoolishEngineer Thanks very much!
can I boost 5vdc to 80dc and then pass it through an inverter control circuit 50HZ to get 80ac output?
I can't use the conventional since I can't find a 5ac to 80ac step-up transformer
Yes you can
Nice bro aur video banao
thank you
Hi. I am a beginner and I want to ask why the polarity of the transformer changes when the MOSFET is in off time? Shukria.
It is the property of the inductor. Thank you so much for watching!!
the input ground and output ground are not the same or are they?
Is simulation they are same, but in actual circuit those are different.
@@FoolishEngineer so to design the feedback which ground should I reference to ?
by the flyback converter i need to increases the voltage from 390v to 1000v is it possible having a power rating of 1200watt tell me sir
For such power, please don't use flyback converter. You can use Full bridge converter, where you can step up the output voltage also. by changing the turns ration of the transformer.
Thank you so much for watching the video!
@@FoolishEngineer thanks a lot..
i will try to do it by full bridge converter. but what about the control and feedback in hardware and simulation work can u tell how to do it.
Thank you for the video. But , Can you help me ? A flyback with Vout is 12000V , it seems difficult for me to calculate and design .
Dude, Why do you want use flyback topology for such high voltages? what is the current?
@@FoolishEngineer that is High voltage direct current . Maybe AC 220V 50Hz -> DC 12000V . Can you suggest me any things?
Please don't go with Flyback topologies for such High Power.
So , which of topology that i can use for 12000v DC?? . Thank for replay
Sir, can I use this topology to achieve solar charge controller?
Yes. Thank you so much for watching!!
Where's the PWM for the Mosfet??
it's in simulation
Winding start of primary and secondary are in opposite.....u have shown it on same sides...
Can you please elaborate the term "start of the winding"?
@@FoolishEngineer yes...Dot represents the start of winding i.e starting point of winding when u practically wind transformer on bobin...
These starting points are exactly opposite for primary and secondary...i.e if core is of 4 pins(two pins each side)..then if winding at primary start at pin 1 of the primary then winding at secondary side should start at pin 2 of secondary ...for a flyback transformer...
According to my study, the dot represents the polarity of voltage or direction of current, where the dot is placed the current starts flowing through that direction. In this video, that's what we have shown, your statement is true, the dot in ebery reference toplogy circuit represents the initial direction of the flow of current.
I would suggest u to go through power electronics books muhaamad Rashid.....As I never heard Dot representing polarity...still I will search and tnx for hearing me😄
how come the power is 130 watts ? when v*I*effeciency = 55*2*0.8=88
There is a mistake in the formula please check the description of the video for corrected formula, please pardon me for the inconvenience
Which aplication r u using
Psim
High tone, though :)
I love man tone pronounce, I mean ... But overall I love the things explained :)
Thank you so much for watching!!
Thank you, but I hate myself when you put all these info without proving any them
Mate, Simulation is proof of this circuit, please check the part 2
This will not work Janemann
okay. Thank you so much for watching!!
Hindi me translat kre pl.
okay