Dear friends, the ammeter connection shown in this video is totally misleading. You should connect an ammeter in series manner with the circuit, I was completely messed that up. But it will not affect the core idea of how to convert DC to AC. Ill upload the corrected videos ASAP.
Sir I have a doubt ...will the current produced be enough for a electromagnetic induction ...as I'm trying a project on mutual induction like the one in transformers ...but a little simple one with 2 coils placed one over the other
Next to that you cant convert dc to ac in the first place.. since ac is a pure sinus.. You can generate a pulsing artificial sinus tough.. You do convert ac to dc yes. Next to that, that modified sine wave was btw the simplest of its form, and is more an example of a pwm signal.. A good ac generation consist of multiple square-waves where each one follows the actual sinus, so its not just two pulses of dc like you described anyway it consist of a few dozen of those all having a small intervall, having all their own amplitude related to the momentary voltage.
Been studying electronics for about a decade on and off. The good thing is, things haven't changed much. Sure, we have better memory and faster more complex chips. but the gist of it hasn't changed in hundreds of yrs. I still find myself exploring diode functions, resistor functions, ect ect. Well made video. Thx.
Lol in 2024 and this is the first time I really understand. What's the H Bridge 😮 Listening the DC to AC for more than 10 years but never understand how it works 😅 Thanks you bro !
Dear Prof MAD......! What a wonderful day that I came across your loved and simplified Electronic Lessons..! I even gained beautiful English Lessons from the way you spoke.I have had difficulties in getting the meaning of the AC Trigonometric function for over 11 years. I am now able to understand the ""down flow of waves "" mean to be the Negative Pol.Thank very much: Sir.
The dead time (Modified square wave) is introduced not only for a better approximation of the Sine wave, but also for the protection of the transistors as they could short out when toggled. Very nice video tutorial. 👍
@@zerdgeofficial DC, by definition, is already « smooth ». Capacitors and inductors only act when there’s a change in current, such as with AC. It’s just that conductors and capacitors act differently with AC. Capacitors act on the voltage, while inductors act on the current, if I am correct (haven’t have to think about that since a few years already)
Well that Ammeter really ought to be a voltmeter. The snag is that we want to use the terms "Alternating" and "Direct" Current. It always seems worth the while to show the origin of this with a magnet spinning near a coil. The speed of the motion gives the frequency. Its the voltage output polarity and extent of it during the cycle that is so informative. So is the notion that without the changes it won't work! Now with that done we can move on to describe that in basic circuits - say lamps and heaters - it won't matter. Then we have the spin off that is induction which allows us to step the voltage up or down (transform) and is is so useful. NOW we can embrace conversion from ac to DC and vice-versa.
Long AC power lines have more resistance (c.f. skin effect) but also have impedance and radiate energy (an effective antenna for 60Hz is 750 miles. The Pacific Intertie is a 500,000 volt DC line from Bonneville Dam in Washington carrying 1500 Megawatts to Los Angeles. The conversion to AC was originally using raquetball court sized Mercury Thyratrons and a field of inductors and capacitors.
I worked for Manitoba Hydro (technician, not engineer) just after they built their first DC system using Mercury Arc Valves. I was still there when they switched over to Thyristors. Big job, interesting stuff, although some of it pretty complex for a tech to understand.
Greetings, I'm impressed by the history lesson of how our ancestors believed "electrons flowed from positive to negative"; and since apparently everyone agrees that is wrong, but embraces the error by giving it a name - is such a disservice to anyone who wants a proper education. From an engineering standpoint, understanding current flow through any electronic circuit is paramount to troubleshooting and circuit design. Historically, some of our 'other' ancestors believed the sun orbited the Earth, and when it was proved otherwise, (after much consternation), they relented. Others believed the world was flat. . . but I digress. On this planet those that only operate an electronic device know "how"; engineers know "why". What planet are you from...?
The control circuit does not generate alternating signal, it simply generate on/off signal sequence to control the transistors. you can get done using simple programmable IC, (for demonstrations, even Arduino can be used ) Hope this will help you.
If the direction of the current is not important, then how does the diode work in a circuit if the flow of electrons are from the negative side to the positive side ? .
I was taught in elementary school (1970s) that current flowed from negative to positive. "Conventional" flow in drawings always drove me nuts, but we are stuck with it. LOL.
I have no basic skill of electronics. I saw some youtube videos that teach how to convert only few volt DC to high volt AC. Does AC always need to be in high voltage? Let's say you convert 12v to 220v. Is it dangerous if you accidentally touch the current?
@@jumbo999614 You need to understand that 12 volts AC , the value of 12 is an average value. The voltage actually goes up as high as 12/0.707 = 17 volts. So it is not just about converting to AC, but you need to increase the magnitude too.
just a heads up, the voltage of a wall outlet is actually 120v rms so the amplitude of the sine wave would be closer to 170v, not 120v like you said in the video
The conventional direction of electric current was originally taken to be from the positive pole to the negative pole of a battery through the external circuit. This system is still used, and causes no problems, even though we now know the electric current is caused by electrons drifting from the negative to the positive pole. Incidentally the speed of the electrons is so slow that, for example, a flashlight battery will probably run down before an electron has gone around the circuit even once.
A Lumped Element Model is used to describe circuit schematics and electron "flow" The truth is, it's the movement of the EM fields that brings the fun to the party.....but parsing that out each time troubleshooting takes place would mean nothing would get done. "Electron flow" is a lumped element type of shorthand.
You’ve shown ammeter connection wrongly (at 1:54) It should be connected serially, not parallel. Alternatively an measurement shunt resistor may be connected serially with ammeter connected parallel to it, but not to the load
I was taught in the military which teaches electron flow, so every once in a while I mix it up with the positive to negative flow. It is a hassle sometimes.
Thank you for pointing out. The ammeter shown on the animation is Centre-zero ammeter. and it was connected to a AC power source. So I hope swapping the wires does not matter.
@@Profmad the ammeter should be in series with the circuit, as you have it would be a short circuit across the supply. O/k, if it were a voltmeter all would be fine. cheers
@@bananaking2828 OMG, I was really messed that up. Thank you very much for pointing out that. I have missed the whole thing . lets see what we can do.......
i guess its more posible to use volt meter rather than ammeter on that parallel connection, it can also show positive and negative reading if its only to show the polarity
Good and knowledgeable video..I have some questions and queries related to this video. 1. How much positive voltage we have to apply to base for current to flow through collector and emitter? 2. How we can control the current flow between collector and emitter by applying voltage or pulse to the base? I am very interested at knowledgeable video with good explanation so I am looking for to you kind, fast and fruitful response.
1. Since we are working with high power applications, normally we use IGBT (Insulated Gate Bipolar Transistor)s for switching purpose. IGBT's applied VGE (gate-emitter voltage) should be at least 14 V (preferably 15 V). Its better to check the data sheet of the component. . 2. I have made another video to explain how does the transistor work. ua-cam.com/video/eZAeaSkgIL0/v-deo.html I hope this will help you.
Awesome video. You explained the conventional and present means to describe current flow, current flow in general, and the different kinds of AC wave forms. These topics are rarely covered in these kinds of discussions, well done. I would like to have seen how capacitors are used to create the offset since wave, I suspect that the result is truer to sinusoidal waves than shown.
Dear friends, the ammeter connection shown in this video is totally misleading. You should connect an ammeter in series manner with the circuit, I was completely messed that up. But it will not affect the core idea of how to convert DC to AC. Ill upload the corrected videos ASAP.
Your honesty is appreciated !
Yes
Sir I have a doubt ...will the current produced be enough for a electromagnetic induction ...as I'm trying a project on mutual induction like the one in transformers ...but a little simple one with 2 coils placed one over the other
I would really appreciate your help🙏🏻
Next to that you cant convert dc to ac in the first place.. since ac is a pure sinus.. You can generate a pulsing artificial sinus tough.. You do convert ac to dc yes.
Next to that, that modified sine wave was btw the simplest of its form, and is more an example of a pwm signal.. A good ac generation consist of multiple square-waves where each one follows the actual sinus, so its not just two pulses of dc like you described anyway it consist of a few dozen of those all having a small intervall, having all their own amplitude related to the momentary voltage.
Been studying electronics for about a decade on and off. The good thing is, things haven't changed much. Sure, we have better memory and faster more complex chips. but the gist of it hasn't changed in hundreds of yrs. I still find myself exploring diode functions, resistor functions, ect ect. Well made video. Thx.
For the most part the principals of electronics really aren't too susceptible to change as the foundations are based on physics
We need more people like this. This is a helpful instruction. I am 12 and my father is an electric engineerer and we are both very intimated.
bro plz use proper english because intimated means you want to reproduce
Hello!
Ampere meters are NEVER connected in parallel with the consumer!
(time: 1:44 --> )
You can draw the same diagram by measuring the tension :)
He knows, he mentioned that in his pinned comment
What a perfect explanation 💖✨
Glad you think so!
Thank You! You have no idea how much that helped.
Glad to hear it!
Wow. Great explanation. It clarified how few electronic devices work.
Glad it was helpful!
Your videos make our life easier. Thanks.
Encontré Oro, Mil gracias , ahora comprendo un poco más el Panorama xD
Nice to hear that.
Great video. Very easy to understand.
thanks a lot for your efforts! You have good skill to teach a hard topic in an easy manner!
Lol in 2024 and this is the first time I really understand. What's the H Bridge 😮
Listening the DC to AC for more than 10 years but never understand how it works 😅
Thanks you bro !
Dear Prof MAD......!
What a wonderful day that I came across your loved and simplified Electronic Lessons..! I even gained beautiful English Lessons from
the way you spoke.I have had difficulties in getting the meaning of the AC Trigonometric function for over 11 years. I am now able to
understand the ""down flow of waves "" mean to be the Negative Pol.Thank very much: Sir.
My pleasure!
Very Nice Explanation
Great video ! Well explained, . Very good job. I have subscribed to your channel.
Awesome, thank you!
Really it helps to understand better way
Thank you.
Nice presentation sir. Looking forward to enjoying upcoming videos.
Thank you , and keep watching.
Thanks from iraq 🇮🇶 😘
Thanks sir for your informational video
Thank you.
Sir...your lectures are awesome 👍🤩 Mind-blowing...need more videos about electronic and electronics...I am a EEE student
I will try my best
Accurate diagram showing so far it is very easy to understand.👍🙂Thank u Sir.
The dead time (Modified square wave) is introduced not only for a better approximation of the Sine wave, but also for the protection of the transistors as they could short out when toggled.
Very nice video tutorial. 👍
Thank you
That's interesting... What application is this?
So good to see you ❤
Crazy how that impatient freestyle go so hard!! Simple beat, nothing extraordinary🤷🏻♂️ it’s DRAKEOS, word Play so dangerous 🤟🏼✊🏼
This was very interesting and informative.
Gustavo from Maceió- al - Brasil, novo no canal!💥👍💥
👍🏻 Well done.
The peak to peak voltage (amplitude) will be greater than the RMS value.
Sinusoidal PWM control of the H-Bridge is worth a mention.
If you wanted to have a better sin wave you could use capacitors or inductors that will smooth the wave form to more closely match those of a sin wave
Correct me if im wrong but capacitors are only for smoothing out DC
@@zerdgeofficial DC, by definition, is already « smooth ». Capacitors and inductors only act when there’s a change in current, such as with AC.
It’s just that conductors and capacitors act differently with AC. Capacitors act on the voltage, while inductors act on the current, if I am correct (haven’t have to think about that since a few years already)
ขอบคุณครับ..ที่ฟื้นความจำจากตำราเรียน ในวิชา อีเล็คโทรนิค ตอนการสร้างกระแสคลื่นรูปฟันเรื่อย ซอทูช ในวงจรภาคกวาดเส้น ทางแนวตั้ง และทางแนวนอนในระบบ ทีวี สมัยก่อน ตั้งแต่ ทีวีขาวดำ แบบหลอดสูญญากาศ...
Very good explanation, I liked it!
Glad to hear that!
Hi, I Like your video. Thanks
Hey, thanks
Good Morning Nice lectur
Thanks and welcome.
Good animation, new suscription.
Awesome, thank you!
You are not Prof Mad 😅 at all. Nice explanation
Thanks 😅
Well that Ammeter really ought to be a voltmeter. The snag is that we want to use the terms "Alternating" and "Direct" Current. It always seems worth the while to show the origin of this with a magnet spinning near a coil. The speed of the motion gives the frequency. Its the voltage output polarity and extent of it during the cycle that is so informative. So is the notion that without the changes it won't work! Now with that done we can move on to describe that in basic circuits - say lamps and heaters - it won't matter. Then we have the spin off that is induction which allows us to step the voltage up or down (transform) and is is so useful. NOW we can embrace conversion from ac to DC and vice-versa.
Hello really good explanation
Hey, thanks!
Long AC power lines have more resistance (c.f. skin effect) but also have impedance and radiate energy (an effective antenna for 60Hz is 750 miles. The Pacific Intertie is a 500,000 volt DC line from Bonneville Dam in Washington carrying 1500 Megawatts to Los Angeles. The conversion to AC was originally using raquetball court sized Mercury Thyratrons and a field of inductors and capacitors.
I worked for Manitoba Hydro (technician, not engineer) just after they built their first DC system using Mercury Arc Valves. I was still there when they switched over to Thyristors. Big job, interesting stuff, although some of it pretty complex for a tech to understand.
Should the Amplitude not be ~170V? (120V * √2) as far as I know they have 120V RMS in america.
What ai website are you using to generate voice?
Great video, but what is it parallel ampermeter?
Thank you. There is a mistake there. Sorry about that.
Greetings, I'm impressed by the history lesson of how our ancestors believed "electrons flowed from positive to negative"; and since apparently everyone agrees that is wrong, but embraces the error by giving it a name - is such a disservice to anyone who wants a proper education. From an engineering standpoint, understanding current flow through any electronic circuit is paramount to troubleshooting and circuit design. Historically, some of our 'other' ancestors believed the sun orbited the Earth, and when it was proved otherwise, (after much consternation), they relented. Others believed the world was flat. . . but I digress. On this planet those that only operate an electronic device know "how"; engineers know "why".
What planet are you from...?
Appreciate your comment.
This comment is not helpful at all. There is nothing wrong with the way current flow is described.
great video❤️❤️
Thank you!!
Great video! Extradinory Explanation , Enjoyed a lot by watching. Helped me to understand easily. 🙌❤️
Glad you liked it
Thanks for your Good Explanation
Glad it was helpful!
It is very good and exellent
Thank you
It would be good if you guys toned down that annoying music so that it's easier to follow your explanation.
very good video and very well explained
Glad it was helpful!
Great video. Please don't forget that most of the world is 220/240V 50Hz, (and US houses are supplied with 240V).😊
Great..well explained
👍 Good Job
Thanks!
Top 👍 👍👍👍👍👍👍😊
Thank you! Cheers!
THANKS FOR YOUR SHARING SIR
Most welcome
Superb 👍👍👍
Facepalm. so how does the control circuit generate the alternating
The control circuit does not generate alternating signal, it simply generate on/off signal sequence to control the transistors. you can get done using simple programmable IC, (for demonstrations, even Arduino can be used )
Hope this will help you.
Thanks man you helped me alot 😊
Glad to hear it!
9mts L8tr i still have no idea all i got was switches & waves isnt it a copper coil wind that reduces the voltage ?
If the direction of the current is not important, then how does the diode work in a circuit if the flow of electrons are from the negative side to the positive side ? .
I was taught in elementary school (1970s) that current flowed from negative to positive. "Conventional" flow in drawings always drove me nuts, but we are stuck with it. LOL.
Great video ! Well explained, easy to understand... Very good job. I have subscribed to your channel.
Awesome, thank you!
What about conversion losses, does it defy kse of thrtmodynamics?
What is the efficiency if thr conversion?
I have no basic skill of electronics. I saw some youtube videos that teach how to convert only few volt DC to high volt AC.
Does AC always need to be in high voltage? Let's say you convert 12v to 220v. Is it dangerous if you accidentally touch the current?
Yes
If you touch both output ac wires
If you touch single a wire it won't shock you unless the second wire is connected to earth/ground/ neutral
@@koushiks_energy Is it possible to convert 12v DC to 12v AC?
@@jumbo999614 easy but not effective and Efficient
@@jumbo999614 You need to understand that 12 volts AC , the value of 12 is an average value. The voltage actually goes up as high as 12/0.707 = 17 volts.
So it is not just about converting to AC, but you need to increase the magnitude too.
@@deang5622 RMS* not average
Nice explanation......can u explain the pure sine wave ckt
As soon as possible
just a heads up, the voltage of a wall outlet is actually 120v rms so the amplitude of the sine wave would be closer to 170v, not 120v like you said in the video
Kya igbt lagane se transformer ki jarurat nahi hogi
Very informative . But i have one question here.where we connect the AC out put after all this process ?
Anywhere you like
Best information thanks 👍
Thanks for liking
In ac does live and neutral wire interchange?
The conventional direction of electric current was originally taken to be from the positive pole to the negative pole of a battery through the external circuit. This system is still used, and causes no problems, even though we now know the electric current is caused by electrons drifting from the negative to the positive pole. Incidentally the speed of the electrons is so slow that, for example, a flashlight battery will probably run down before an electron has gone around the circuit even once.
Thank you for sharing this.
A Lumped Element Model is used to describe circuit schematics and electron "flow"
The truth is, it's the movement of the EM fields that brings the fun to the party.....but parsing that out each time troubleshooting takes place would mean nothing would get done.
"Electron flow" is a lumped element type of shorthand.
@@WaterproofSoapagreed, I think actual electron flow is something like 1 foot per hour, or some ridiculously slow travel time.
You’ve shown ammeter connection wrongly (at 1:54) It should be connected serially, not parallel. Alternatively an measurement shunt resistor may be connected serially with ammeter connected parallel to it, but not to the load
That's correct. There is a mistake there. Thank you for the comment.
Good presentation, pity about the noise.
Thank you.
Great video. Thank you for the information
Our pleasure!
Thankful good information
Why we don't use the MESFET, MOSFET or JFET devices for faster switching. Although, the MESFET is also the fastest one in Electronic devices?
I believe the inventor of the rectifier tube was Rogers in Toronto, Canada.
what type of induced current ,ac or dc?
magnetically induced currents are AC, most of the times.
I was taught in the military which teaches electron flow, so every once in a while I mix it up with the positive to negative flow. It is a hassle sometimes.
Can i find the pure sine wave from the function generators?
Yes you can, but it depends on the function generator model.
Good luck hooking up your ammeter like that @ 2:35
Thank you for pointing out. The ammeter shown on the animation is Centre-zero ammeter. and it was connected to a AC power source. So I hope swapping the wires does not matter.
@@Profmad the ammeter should be in series with the circuit, as you have it would be a short circuit across the supply. O/k, if it were a voltmeter all would be fine. cheers
@@bananaking2828 OMG, I was really messed that up. Thank you very much for pointing out that. I have missed the whole thing . lets see what we can do.......
I always made a colpitts oscillator and attach it to a current amplifier. It makes for a very clean oscillator.
Hi is the are any dc to aç converter 120vdc to 120vac? Do you have any brand you can recommend ?
Luar biasa from indonesia
Thank you.
But you haven’t explained how the pure sine wave is formed. The curcuity required.
Excellent
Could please explain howmuch voltage should be apply to the gate terminal
Sir how control ckt work?
Hi @Provmad, where can i find a arduino bpard to build this cercuit at home?
I am learning for electrision but want to expand my u derstanding of electronics
Osammm hy
I say to from Bangladesh ❤
Good video thanks.
So what is the difference between a simple switch and an igbt?
As you say still igbt need a swiching to change the current
i guess its more posible to use volt meter rather than ammeter on that parallel connection, it can also show positive and negative reading if its only to show the polarity
You do not show the Amp Meters connected correctly (in series with the circuit).
It was one of my terrible mistake. I didn't notice it until this was publish. Sorry for the inconvenience.
07:56 I think diodes should be in series not in parallel with IGBTs.
Good and knowledgeable video..I have some questions and queries related to this video. 1. How much positive voltage we have to apply to base for current to flow through collector and emitter? 2. How we can control the current flow between collector and emitter by applying voltage or pulse to the base? I am very interested at knowledgeable video with good explanation so I am looking for to you kind, fast and fruitful response.
1. Since we are working with high power applications, normally we use IGBT (Insulated Gate Bipolar Transistor)s for switching purpose. IGBT's applied VGE (gate-emitter voltage) should be at least 14 V (preferably 15 V). Its better to check the data sheet of the component. .
2. I have made another video to explain how does the transistor work.
ua-cam.com/video/eZAeaSkgIL0/v-deo.html
I hope this will help you.
Vera level 💯
Thank you.
Love for your knowledge
Is it possible to produce pure sine wave instead of modified sine wave (or PWM) in DC to AC inverte process?
Yeah there are pure sinewave inverters, Its depend on how far we need to smoothen the wave.
Awesome video. You explained the conventional and present means to describe current flow, current flow in general, and the different kinds of AC wave forms. These topics are rarely covered in these kinds of discussions, well done. I would like to have seen how capacitors are used to create the offset since wave, I suspect that the result is truer to sinusoidal waves than shown.
Great how the ampmeter is connected in parallel