In the waveform where the voltage is going to 85 volts, that particular voltage has nothing to do with the inductor, as such. It is the result of causing the body diode of the MOSFET to avalanche. It stays at the avalance voltage until the energy stored in the inductor been discharged. Avalanching the diode can be destructive if there is sufficient available energy/power (they are generally rated separately, hence the slash). In some circumstances it is perfectly safe to allow it. Note that at all times the drain of the FET is positive with respect to its source.
Yes, interesting point from @d614gakadoug9. Fred, I've looked over your LinkedIn Profile, and I have sent you an invitation to link with me if you wish. If I may offer a small piece of advice. Your "I'm crazy passionate about (Power) electronics" is or will limit your career development going forward, and I must say after reviewing you on LinkedIn, you seem to lack a broader experience base in the field of Electronic Engineering. Switch-Mode PSUs have been around in consumer electronics since before you were born, I was dealing with them during the 1970s, of course, the power requirements in today's Automotive applications are somewhat different (I ran an Electronics design Laboratory for one of the largest blue-chip Car manufacturers in the world). One of the areas I would perhaps suggest you would like to encompass more in your development is Telecommunications, but whatever you do, don't become a "one trick pony" 😉
holly smokes, the video is wrong then? i mean, delete the mosfet, use a hand switch, it then won't dip down to those -85 volts ? shhht.... every solution brings new problems!!
I found your channel just a few hours ago but I'm sure I'll watch all your videos starting with the first. I love your style and your clear and logical approach. 😊😊❤❤
A wee bit of calculus without mentioning it. Nice. LOL. Seriously, I like the presentation. You would have lost a lot of the audience if you'd gone the full dt/dx and first second derivatives, eh? The fascinating thing is how dynamic inductance / capacitance phenomena are, and how our 'maths' can tame them! Thumbs up!
Good job mate. Yours is one of the many videos and variations in explaining electronic components and in each video I am able to glean knowledge. This video helped me understand the link between a mosfet and inductor.
AMAZINGLY well done!! NEVER seen anyone explain concepts and relations this clearly and using the actual components to demo! If you wouldn't mind, would you ping me to check an explanation on MOSFETs in a circuit I'm preparing? Much appreciated and keep this up! Much needed!
Superb presentation skills! I have watched a lot of TH-cam on the topic, and few are as good as this channel. I wonder if the glamor face close-ups are a bit off-putting to the browsing electronics hobbyist. Keep the camera on the topic and let your butter voice unravel the near-insurmountable mysteries of electricity.
@shawncalderon4950 ah don’t worry you weren’t rude I’ve had much worse haha! Thank you again, I’m hoping to make more videos in a few months when I’m done with uni.
I just subscribed after watching your popular video about power supplies. I know enough to be dangerous. I'm commenting about an extremely popular problem that I'm sure would get many views. I (like thousands of others) bought a VFD and read in the manual that I should have "AC reactor" and an "Input EMC filter" before the VFD. (My VFD powers a 3hp motor that is normally 3 phase but the best I can do is single phase 240v). As for the AC reactor ebay has them for around $300 which is what I paid for the vfd. I've been told I can use a used 3 phase one if I use the outer 2 coils. Then I found a guy who made one for less than $20 by cutting an iron pipe and wrapping wire around it. He ended up with around 5% inductance, which is what is recommended. I am not alone with this problem. If you could made video about it I'm sure you would get everyone who bought a vfd to watch it. Should I buy one of those big 3 phase ones, could I make one with an iron torroid, how does one size a filter, how about just a surge protector, where do babies come from, what is the capital of South Dakota? All these questions keep me up at night. Thanks for your great videos
Hmm pipe sounds a bit dodgy I would imagine there would be a lot of losses. I can have a look into it though as I recently got the kit to characterise inductors so can test custom ones. As for babies, absolutely no idea I'm afraid...
I'm stuck on a problem I need a solution to! Think this video may be close to the solution. I need a Vampire power supply, that can give a regulated 5v dc @1amp, No matter what the AC input voltage is. An operational example: Have an electronic dimmer on a lighting circuit say 100w bulb we need to generate the 5v dc no matter what that Dimmer or Variac is set to (20 to 100 percent) Any help is be appreciated. Love your videos they are very Good, You right get to the point, and you are good at making them understandable for us average folk.
A simple linear regulator like a generic 7805 is the simplest way to get 5VDC@1A, I would use one of those as the final stage of a PSU, but they can only take up to around 35VDC on the input so preceding that you'd want something else. simplest would be a transformer with a rectifier such that the output would always be between 35VDC and maybe 7VDC. this wouldn't be very efficient or compact though. Really you want a switch-mode PSU which you could maybe achieve by rectifying the mains directly then feeding it through a circuit similar to this, but with voltage feedback rather than current. This wouldn't be isolated though so definitely shouldn't be used for anything a human could come into contact with. I'd look into buck converters, or forward converters if you need the isolation.
Very nice videos, I like your step by step methodology in presenting subjects, subscribed instantly. The inductor is the analog compliment of the capacitor: a capacitor once charged would short-circuit (lose charge) if we touch its leads, an inductor needs its leads connected once charged so that it does not lose charge (and keep the magnetism not collapsing)! In a perfect world where the inductor was made out of a super-conductor, the current would keep on going. In this world we are in, however, we have ohmic losses, so an inductor cannot possibly compete with a capacitor in this area. A capacitor can remain charged with no losses, indefinitely. Therefore, in any power systems where you care about efficiency, you would use a capacitive design, as they do for mobile phones (the voltages are upped or downed with putting capacitors dynamically in series and parallel, and the current is supplied by how many charge transfers you do). In the design here, you are using a diode to keep its leads connected in the off-cycle, and this introduces a huge amount of losses. You see, a photovoltaic cell, an LED and a diode are the EXACT same devices (believe it or not!), with a slight change in bang gaps. The simple p-n silicon diode is like effectively having an infrared LED turning on every time it is forward biased!! The perfect solution here is to have a field effect transistor also on the top side, instead of the diode! You energise it when you de-energise the bottom one, so you could have it on a single wire if you use p and n types for the top and bottom transistors respectively. That way you have extremely low losses (a good transistor nowadays has a resistance at the range of milli-ohms when turned on, it has a negligible voltage drop). Also, for very high frequencies, or for excellent synchronisation of the two transistors, you could count the nano-seconds it takes to energise and de-energise the gate for each one, depending on the voltage you are supplying, and you could apply the correction time offset with a microcontroller. If you are wondering how you could connect both of the mosfets on a single signal, on a single wire, you could have a look at the videos I have uploaded on my channel regarding the CMOS not gate. Best regards :)
@@electrarc240 Yes, they use them there... An inductor like that would be very happy in a closed circuit. It would be the equivalent of the quality we enjoy with capacitors: the charge is not lost, until you need it. For example, in a system like that, once you do the initial charging, you would leave the top transistor closed while opening the bottom one. The energy would just exist as a magnetic field, until you need it.
Thank you for proving that the driver I designed will work. I'm using an h bridge to isolate and increasing voltage on the secondary then running a bunch of 50w COBs in series, limiting the current to 1.5A. That 200ma window using a flipflop and comparators, maybe a little signal filtration and there's uninterrupted light, which is ideal.
@10:34 Without the fly-back diode, where will the current go, where does the -ve 85 voltage go, when the circuit is open? You said it will push as hard as it can, to get some current to flow to where? current can only flow in a closed circuit. Will it ionize the air to create a closed circuit for current to flow? Please explain further. Thanks, i appreciate your work
I like to explain inductors to people by talking about HOW energy is stored in them. They act as an open circuit initially because all the current is going into building up a magnetic field. In steady-state, the magnetic field is stable and contains the energy you invested at the beginning. When you disconnect the inductor, the magnetic field is no longer being sustained by the current flowing through the wire, and it collapses, causing an opposite voltage to be induced in the wire as it collapses “down”…as opposed to building “up” the field at first.
Instead of PWM, try hybrid switching. The ON period is fixed to the resonant period of the LC circuit. The OFF period is varied to regulate the output.
Very nice I've basically just startet making this my new edgy hobby. I've learned a thing and english ist not my native language. So really good job. xD I'll stay around some time. ☕
I believe the 800 micro Henry should be milli Henry to 1.5A to yield 1.5A . I like your tutorial because they make use of formulas that I buried long ago,
It raised some questions about where the MOSFET's gate is hooked up. why didn't explain about the capacitor and push switch? why you didn't show the final & the whole schematic with their component numbers/values?
Hello what about pick up coils phase shift control how is that calculated? You see I refere to inductive triggers for astabel mode IC chip 555 timers like GM ignition modules .So I reali have hard time choseing correct components to attempt getting +/- 15° pulse degree variability. The pick up is at 1.35 Henry I'm not Shure resistance so how could I possibly chose correct inductor,capacitor types and resistor value to gain phase shifter for pulse signal from the pick up coil?
Adding a capacitor can lead to a less uniform current waveform which makes this kind of very basic control less stable. If you make this circuit properly with a microcontroller adding a capacitor would make more sense. I will try and make a video covering that in the next few weeks if I find time.
I've discovered your electronic chanel. I want to thank you for your work that is amaizing. From 7 : 54, can you send the schematic please? I mean with different illustrations from input and output you take for measurement to the oscilloscope from wires. Thank you very much.
@electricarc240 just subscribed yesterday & been watching some of your old videos. Not made it far yet but wanted to say i have a somewhat uniquely compromised problem. 3-phase motor that only needs to run at a single (base) speed. 850, 1750 or 3450RPM depending on pole pairs of the motor. We inly have single phase 240v (120v +/-) to use. The waste water pump is what we are making. Can we control / run the pump with the windings as the inductor side? Sure a VFD could be used but the enviroment is bad so solidstate small discretely built components may hold up long term much better for a 16 amp motor specific design? Than will keep watching.
I don't know much about industrial stuff, but if you need to run a 3-phase motor from a single phase supply I'd definitely try to stick with a VFD. Maybe look for extra robust ones or fully sealed units
@electrarc240 what we want to do is put the electronics into the pump cap (submersible pump) and pot the components so that it runs single speed when power is applied. VFDs are way too costly for this application, household sewage ejector pumps. Price is paramount & if we can run the 3 phase motor without the required capacitors etc maybe it would be a better idea?
@electrarc240 we have single phase motors, they are a bit of a issue with the start components & spikes on the lines. Starting & stopping 5 or 10 times an hour also can cause those start caps/relays to go south in a few short months on the small basins. Why we were / are looking at simple solutions for 3 phase conversions, (DPS) units have to be tailored & seem to have similar issues.
Today trend is to capture the back emf store it and use it because back EMF has many uses it decalsifies batteries and its also called cold electricity.
This single video on inductors has made me immediately wonder if some of my circuit designs are wrong. Working with Arduinos and purely digital circuits mostly for signalling, I suspect in some circumstances, I may need to revisit my designs. Cheers!
Samsung hides this component, so I checked on what it really does. Blacklisted power banks, stolen ones use the winding to self drain the battery, it becomes very hot. During normal charging it is warm. It is designed to self maintain the battery during normal use. I am not sure, if it has radioactive memory effect for a while after it is bought.
After this video I made one about using them for an LED driver. This was a while ago though. I may do videos in the future on inductors but my style of video has changed a bit since then
there are 2 types of German teachers, first is kind and takes their time with you, and the second are mean and say stuff like " are you a stupid person " type, he is the first type and i really love that
Best an most informative video on youtube for simple circuits, for all of us that only know basics. Please keep them coming. Thank You
Thanks, more to come!
In the waveform where the voltage is going to 85 volts, that particular voltage has nothing to do with the inductor, as such. It is the result of causing the body diode of the MOSFET to avalanche. It stays at the avalance voltage until the energy stored in the inductor been discharged.
Avalanching the diode can be destructive if there is sufficient available energy/power (they are generally rated separately, hence the slash). In some circumstances it is perfectly safe to allow it.
Note that at all times the drain of the FET is positive with respect to its source.
Yes, interesting point from @d614gakadoug9.
Fred, I've looked over your LinkedIn Profile, and I have sent you an invitation to link with me if you wish. If I may offer a small piece of advice. Your "I'm crazy passionate about (Power) electronics" is or will limit your career development going forward, and I must say after reviewing you on LinkedIn, you seem to lack a broader experience base in the field of Electronic Engineering. Switch-Mode PSUs have been around in consumer electronics since before you were born, I was dealing with them during the 1970s, of course, the power requirements in today's Automotive applications are somewhat different (I ran an Electronics design Laboratory for one of the largest blue-chip Car manufacturers in the world). One of the areas I would perhaps suggest you would like to encompass more in your development is Telecommunications, but whatever you do, don't become a "one trick pony" 😉
holly smokes, the video is wrong then? i mean, delete the mosfet, use a hand switch, it then won't dip down to those -85 volts ?
shhht.... every solution brings new problems!!
Bro, this is absolutely GOLD. Can't express how simple you made it. I wish I could have this level of understanding!
Wow thank you very much!
understanding of what?? 🙄🙄🤪🤪
It's great that you show the equations, explain and apply them into real circuits + you don't play a distracting bg music. 👍✌
I usually try to avoid equations to keep things simple, I only show them if I can prove them to you all with a real demo! Thanks
@@electrarc240 Keep up the good work.
Really nice explanation with real components and scope screen. Thank you!
More ElecrArc in my life is always a good thing, keep it up! Also that's a fancy outro you've got now.
That was one of the if "NOT" the best explanation of PWM an inductor.
Yoy just got a new subscription. 👍☺️🇮🇪
I found your channel just a few hours ago but I'm sure I'll watch all your videos starting with the first. I love your style and your clear and logical approach. 😊😊❤❤
Hi ,thanks , the beauty of your series is we can watch it over and over again until we understand haha. Keep them coming, many thanks.
😅
Thank you, thank you milion times! Gretings from Romania!
A wee bit of calculus without mentioning it. Nice. LOL. Seriously, I like the presentation. You would have lost a lot of the audience if you'd gone the full dt/dx and first second derivatives, eh? The fascinating thing is how dynamic inductance / capacitance phenomena are, and how our 'maths' can tame them! Thumbs up!
I love your videos. I always learn something new. Thank you.
Perfect explanation, enjoyed to watch, keep on going!
My arsenal full of great content said your channel will fit in just nice and never sooner. New Sub earned.
Well done. Well done.
Totally awesome video and I've never heard it explained like this.
Hey men, this Vid is much more better than Millions others👍👍 Well Done.
I already knew the subject, but clicked out of curiosity. Quite a good explanation, i approve
Amazing explanation! Thank you!!
Great explanation as always. Thank you very much, I'm looking forward to the next ones!
Thanks, glad you enjoyed it!
Good job mate. Yours is one of the many videos and variations in explaining electronic components and in each video I am able to glean knowledge. This video helped me understand the link between a mosfet and inductor.
Boss! Groovy! Twitchen! and just plain COoL. (can I say that?)
I like your use of the circuit diagrams which helps my understanding of what you are doing! Thank you.
Best video I ever had. Answers to all of my question going in mind. What inductor is doing in the circuit,... :D
Great work, very good teacher
I like these videos. Very clear and well explained. I also learn stuff :-) Well done and thank you.
Thank you very much!
Thank you so much tutor. We appreciate the great work!
Well, I'll be damned. I don't believe I've ever run across such an understandable explanation of a constant current driver circuit. Cheers, mate!
AMAZINGLY well done!! NEVER seen anyone explain concepts and relations this clearly and using the actual components to demo! If you wouldn't mind, would you ping me to check an explanation on MOSFETs in a circuit I'm preparing? Much appreciated and keep this up! Much needed!
Superb presentation skills! I have watched a lot of TH-cam on the topic, and few are as good as this channel. I wonder if the glamor face close-ups are a bit off-putting to the browsing electronics hobbyist. Keep the camera on the topic and let your butter voice unravel the near-insurmountable mysteries of electricity.
Thank you very much! And yes I’ve been working more on hiding my money maker!
@@electrarc240 Please forgive my rudeness. You are a gifted, talented, genius teacher; let no one tell you otherwise!
@shawncalderon4950 ah don’t worry you weren’t rude I’ve had much worse haha! Thank you again, I’m hoping to make more videos in a few months when I’m done with uni.
@@electrarc240 Is uni short for university? I'm a retired military veteran from Chicago and am unfamiliar with that abbreviation.
Yes it’s for university. I will be working next year so should have more time for this. I’ve been very busy this year
I just subscribed after watching your popular video about power supplies. I know enough to be dangerous.
I'm commenting about an extremely popular problem that I'm sure would get many views.
I (like thousands of others) bought a VFD and read in the manual that I should have "AC reactor" and an "Input EMC filter" before the VFD. (My VFD powers a 3hp motor that is normally 3 phase but the best I can do is single phase 240v).
As for the AC reactor ebay has them for around $300 which is what I paid for the vfd. I've been told I can use a used 3 phase one if I use the outer 2 coils. Then I found a guy who made one for less than $20 by cutting an iron pipe and wrapping wire around it. He ended up with around 5% inductance, which is what is recommended.
I am not alone with this problem. If you could made video about it I'm sure you would get everyone who bought a vfd to watch it.
Should I buy one of those big 3 phase ones, could I make one with an iron torroid, how does one size a filter, how about just a surge protector, where do babies come from, what is the capital of South Dakota? All these questions keep me up at night.
Thanks for your great videos
Hmm pipe sounds a bit dodgy I would imagine there would be a lot of losses. I can have a look into it though as I recently got the kit to characterise inductors so can test custom ones. As for babies, absolutely no idea I'm afraid...
I'm stuck on a problem I need a solution to! Think this video may be close to the solution.
I need a Vampire power supply, that can give a regulated 5v dc @1amp,
No matter what the AC input voltage is.
An operational example:
Have an electronic dimmer on a lighting circuit say 100w bulb we need to generate the 5v dc no matter what that Dimmer or Variac is set to (20 to 100 percent)
Any help is be appreciated.
Love your videos they are very Good, You right get to the point, and you are good at making them understandable for us average folk.
A simple linear regulator like a generic 7805 is the simplest way to get 5VDC@1A, I would use one of those as the final stage of a PSU, but they can only take up to around 35VDC on the input so preceding that you'd want something else. simplest would be a transformer with a rectifier such that the output would always be between 35VDC and maybe 7VDC. this wouldn't be very efficient or compact though. Really you want a switch-mode PSU which you could maybe achieve by rectifying the mains directly then feeding it through a circuit similar to this, but with voltage feedback rather than current. This wouldn't be isolated though so definitely shouldn't be used for anything a human could come into contact with. I'd look into buck converters, or forward converters if you need the isolation.
Very nicely explained ! you would be a good teacher !!
Maybe one day I will be one!
Very nice and practical explanation.
a really good video, well explained, smart young man.
Great video! You explained this subject so well. Thanks!
Very nice videos, I like your step by step methodology in presenting subjects, subscribed instantly.
The inductor is the analog compliment of the capacitor: a capacitor once charged would short-circuit (lose charge) if we touch its leads, an inductor needs its leads connected once charged so that it does not lose charge (and keep the magnetism not collapsing)!
In a perfect world where the inductor was made out of a super-conductor, the current would keep on going. In this world we are in, however, we have ohmic losses, so an inductor cannot possibly compete with a capacitor in this area. A capacitor can remain charged with no losses, indefinitely. Therefore, in any power systems where you care about efficiency, you would use a capacitive design, as they do for mobile phones (the voltages are upped or downed with putting capacitors dynamically in series and parallel, and the current is supplied by how many charge transfers you do).
In the design here, you are using a diode to keep its leads connected in the off-cycle, and this introduces a huge amount of losses. You see, a photovoltaic cell, an LED and a diode are the EXACT same devices (believe it or not!), with a slight change in bang gaps. The simple p-n silicon diode is like effectively having an infrared LED turning on every time it is forward biased!! The perfect solution here is to have a field effect transistor also on the top side, instead of the diode! You energise it when you de-energise the bottom one, so you could have it on a single wire if you use p and n types for the top and bottom transistors respectively. That way you have extremely low losses (a good transistor nowadays has a resistance at the range of milli-ohms when turned on, it has a negligible voltage drop).
Also, for very high frequencies, or for excellent synchronisation of the two transistors, you could count the nano-seconds it takes to energise and de-energise the gate for each one, depending on the voltage you are supplying, and you could apply the correction time offset with a microcontroller.
If you are wondering how you could connect both of the mosfets on a single signal, on a single wire, you could have a look at the videos I have uploaded on my channel regarding the CMOS not gate.
Best regards :)
Superconducting inductor, sounds like an MRI scanner. Thanks for all the info!
@@electrarc240 Yes, they use them there... An inductor like that would be very happy in a closed circuit. It would be the equivalent of the quality we enjoy with capacitors: the charge is not lost, until you need it.
For example, in a system like that, once you do the initial charging, you would leave the top transistor closed while opening the bottom one. The energy would just exist as a magnetic field, until you need it.
@@BillDemos Oh how we dream... Maybe one day
Video put together well. Subscribed.
This video is Gold! Tank you for taking the time.
Very well explained! Congratulations"! I'll be looking for your following video.
Brilliantly explained thank you.
If id had a teacher like you, id have been something.
You do now! It’s never too late to learn :)
Perfect explanation 😊
Thank you for proving that the driver I designed will work. I'm using an h bridge to isolate and increasing voltage on the secondary then running a bunch of 50w COBs in series, limiting the current to 1.5A. That 200ma window using a flipflop and comparators, maybe a little signal filtration and there's uninterrupted light, which is ideal.
@10:34 Without the fly-back diode, where will the current go, where does the -ve 85 voltage go, when the circuit is open? You said it will push as hard as it can, to get some current to flow to where? current can only flow in a closed circuit. Will it ionize the air to create a closed circuit for current to flow? Please explain further. Thanks, i appreciate your work
Simple projects 👍
nice job sir
Very useful thanks 🙏
11:39
"Ah, yeah. It's all comin' together"
But seriously. Getting a feeling I'm actually getting a handle on this stuff, lol. 13:08 Agreed, man.
I like to explain inductors to people by talking about HOW energy is stored in them. They act as an open circuit initially because all the current is going into building up a magnetic field. In steady-state, the magnetic field is stable and contains the energy you invested at the beginning. When you disconnect the inductor, the magnetic field is no longer being sustained by the current flowing through the wire, and it collapses, causing an opposite voltage to be induced in the wire as it collapses “down”…as opposed to building “up” the field at first.
Very informative, thanks a lot
Thank!
Very interesting and informative unfortunately I’m thick and it would take the rest of my life to understand this,but thanks for trying.
Awesome video, subscribed !
Thanks for the sub!
Execellent . A little to fast explanation.
Good explanation, thanks.
Glad it was helpful!
Great description and explanation. 👌
Great explanation!! ⭐️⭐️⭐️⭐️⭐️
Just found you and I subed. Thank you for this work. Appreciate it.
A very important video Sir
Excellent resource, thanks.
Thanks 👍
Instead of PWM, try hybrid switching. The ON period is fixed to the resonant period of the LC circuit. The OFF period is varied to regulate the output.
Thanks for helping jou are the best 🤙👍👍👍👍
Very nice I've basically just startet making this my new edgy hobby. I've learned a thing and english ist not my native language. So really good job. xD I'll stay around some time.
☕
I believe the 800 micro Henry should be milli Henry to 1.5A to yield 1.5A . I like your tutorial because they make use of formulas that I buried long ago,
Please make a video about Oscilloscope, i am a hobbyist and i love to see a video made by your way of explanation
Hmm that's a good idea, I usually avoid using them because they can confuse people, so clearly they need a video making about them!
Excellent!
Good video.
15:00 the inductor current limit is presumably your powersupply current limit ?
It raised some questions about where the MOSFET's gate is hooked up. why didn't explain about the capacitor and push switch? why you didn't show the final & the whole schematic with their component numbers/values?
when first learned about inductors I was amazed by what they can do for example a "boost converter"
Yeah same, still not over the initial excitement of that revelation tbh 😂
Thiis is a fantastic Video! Thanks for sharing!
What is the current limit defined by?
The 2A limit is from the power supply
Thanks...Nice explanation.
Hello what about pick up coils phase shift control how is that calculated? You see I refere to inductive triggers for astabel mode IC chip 555 timers like GM ignition modules .So I reali have hard time choseing correct components to attempt getting +/- 15° pulse degree variability. The pick up is at 1.35 Henry I'm not Shure resistance so how could I possibly chose correct inductor,capacitor types and resistor value to gain phase shifter for pulse signal from the pick up coil?
Love the videos. Keep ingoing. Pretty sure the youtube algorithm will push you soon :-)
Thanks!
Great math explanation
Wouldn't a capacitor at the output reduce the ripple?
Adding a capacitor can lead to a less uniform current waveform which makes this kind of very basic control less stable. If you make this circuit properly with a microcontroller adding a capacitor would make more sense. I will try and make a video covering that in the next few weeks if I find time.
I've discovered your electronic chanel. I want to thank you for your work that is amaizing. From 7 : 54, can you send the schematic please? I mean with different illustrations from input and output you take for measurement to the oscilloscope from wires. Thank you very much.
MASTER TEACHER THANK YOU!
Thanks!
I have an inverter which is internally arcing, coming from some sort of inductor...any ideas?
What kind of inverter? Motor drive or DC -> mains kinda thing?
Wonderful.
It would be good if you use the right units in the formula,t in ? L in ?
4:20 has v in volts (V), t in milliseconds (ms), L in microhenries (uH) and i in amps (A)
@electricarc240 just subscribed yesterday & been watching some of your old videos. Not made it far yet but wanted to say i have a somewhat uniquely compromised problem.
3-phase motor that only needs to run at a single (base) speed. 850, 1750 or 3450RPM depending on pole pairs of the motor. We inly have single phase 240v (120v +/-) to use. The waste water pump is what we are making.
Can we control / run the pump with the windings as the inductor side? Sure a VFD could be used but the enviroment is bad so solidstate small discretely built components may hold up long term much better for a 16 amp motor specific design?
Than will keep watching.
I don't know much about industrial stuff, but if you need to run a 3-phase motor from a single phase supply I'd definitely try to stick with a VFD. Maybe look for extra robust ones or fully sealed units
@electrarc240 what we want to do is put the electronics into the pump cap (submersible pump) and pot the components so that it runs single speed when power is applied. VFDs are way too costly for this application, household sewage ejector pumps. Price is paramount & if we can run the 3 phase motor without the required capacitors etc maybe it would be a better idea?
@@markmatt9174 And you can't use a single-phase motor? I'm not sure you can do any shaded-pole trickery for a three-phase motor but I may be wrong
@electrarc240 we have single phase motors, they are a bit of a issue with the start components & spikes on the lines. Starting & stopping 5 or 10 times an hour also can cause those start caps/relays to go south in a few short months on the small basins.
Why we were / are looking at simple solutions for 3 phase conversions, (DPS) units have to be tailored & seem to have similar issues.
Today trend is to capture the back emf store it and use it because back EMF has many uses it decalsifies batteries and its also called cold electricity.
Awesome!
Thank you
This single video on inductors has made me immediately wonder if some of my circuit designs are wrong. Working with Arduinos and purely digital circuits mostly for signalling, I suspect in some circumstances, I may need to revisit my designs. Cheers!
What is the type of transistor
What transformer?
@electrarc240 the mosfet
Oh sorry I misread!! It’s an IRF530n I have a lot of those so used to use them for everything
nice proj
ect
So nice thanks
What if we don't believe the equation or your oscilloscope? Could you please lick the inductor, turn it on and tell us how it feels?
Like your videos sir
Glad to hear that!
Samsung hides this component, so I checked on what it really does. Blacklisted power banks, stolen ones use the winding to self drain the battery, it becomes very hot. During normal charging it is warm. It is designed to self maintain the battery during normal use. I am not sure, if it has radioactive memory effect for a while after it is bought.
its the collapse of the magnetic field that generates that voltage spike @ 10:00
What's the number of this MOSFET?
Toshiba K30A06N1
Please upload the next video
What’s the next video?
At the end of the video you said you will be uploading two more videos on inductors. How to implement direct current control in real world
After this video I made one about using them for an LED driver. This was a while ago though. I may do videos in the future on inductors but my style of video has changed a bit since then
Tesla knew this instinctively
there are 2 types of German teachers, first is kind and takes their time with you, and the second are mean and say stuff like " are you a stupid person " type, he is the first type and i really love that
🎉❤
Yes but you controll current with voltage, but you monitor the current.