Best explanation I have ever seen for starting single phase AC motor. Impressed that you also covered the variations of starting systems. A little louder would have been good, but my thanks to you for helping me.
I have probably seen hundreds of images, diagrams, text explanations and videos and none of them made it 'click' for me. Your video did it. It was simple yet well detailed. Thank you!
You did it, you killed it, you got the explanation well easily explained with the basic/fundamental Electrical & mathematical principles, without complexities. Well presented! Thanks. More of such
Thanks for a very clear and definitive presentation - your graphics helped a lot. I especially liked the one where you increase the capacitance with the "slider" and show the effect on the vector and field windings diagrams. Great job!
Fantastically done, was searching for ages on how to make a DIY single phase AC motor, couldn't find anything i understood until i stumbled across this, hats off to you!
Awesome. I don't know how many times I've looked this up over the years. Your explanation along with recently looking up an example of a person using capacitors to get around a split phase supply to make a three phase motor to work has finally made this "click." Thanks.
Excellent video except for the very low audio. Also as pointed out previously, opposite poles attract, similar polls repell, not what the animation is showing, otherwise one of the best explanations I have seen on TH-cam.
Its amazing that many other videos have fancy animations which somewhat help to understand this concept, but this "roughly" but very clearly drawn presentation really helped me to understand it! That CIVIL is great to know, never heard of it.
Respected Sir I have watched all videos regarding this topic, but trust me, i have never found any video that is better than you. Thank you so m😊uch explaining this topic in a very simple way
i have watched many videos with and without animation but by graph and 2D explanation i understood it very well. very good way of explaining the concept
Excellent explanation. Most videos dont really show the mathematical model behind monophase motors and just give a qualitative explnation. I find it much easier to understand whats happening when you use phasor and how each current and voltaje quantity are out of phase
Thank you for this explanation! I recently discovered single phase brushless when I took apart a three wire projector fan. My projector has gone through two fans now (8 months apart) and throwing fan speed errors again. The fans still work but after 10 minutes the projector throws a fan speed error. I think the projector is running the fan at too low voltage causing premature failure of the tachometer signal (hall effect sensor circuit) or is wearing out other circuit components and the fan is truly running slower than it should. I'm hoping to gain a better understanding and hopefully fix or re-engineer the projector to stop going through fans. The projector is BENQ W1070. If I run the projector in "high-altitude mode" it runs the fan at high speed and it doesn't get the error but is so loud I can't enjoy using the projector. Oh, I should add that it only has two wires but four poles on the stator. Perhaps the capacitor is hidden on the stator somewhere to avoid having to solder four wires to the circuit board. I'll have another look when I get home from work.
The reason I ask is that I think I have a two phase motor like the one in your video. It came from my old washing machine and I'm using it on my (corded) A/C electric mower now, but need to reverse the rotation for the blades to cut the grass. I've turned the blade upside down as a temporary fix, but would like to know if the motor can be reversed. Thanks.
+subu das Have a look at this video on power factor correction. It shows how a capacitor can vary the phase angle of current going to a motor.th-cam.com/video/DSwaCGRjGLg/w-d-xo.html
So, one question just popped-up in my mind. Is is possible to create three phase from a single phase supply by using two different capacitors that has correct capacitances?
Thank You! I've wanted someone to explain how this this works for a long time! I understood that it was needed to start the directional motion but didn't understand how or why!
Thank you for concise and easily understood explanation. I have motor where capacitance is removed from circuit with relay. How is this accomplished? Thanks again, Mark
You made the best video explaining how to start single phase motor. So in theory you can use various size start capacitors which will create phase angle different than ideal 90 degree, but until there is enough torque motor will start normally? I am asking because I have motor with missing start capacitor and I don't know which value to choose. Is there any formula to calculate capacitor value from windings resistance maybe?
You'll need to know the inductance of the winding as well as its resistance. If you look at this video th-cam.com/video/DSwaCGRjGLg/w-d-xo.html it will show you the formulas and how to determine the phase angle. Hope that helps.
First of all, I want to say thank you for the best & simple explanation video.. This single video has almost everything I've been looking for about single phase induction motor. Second thing, if you don't mind, please explain a bit more about winding direction in relation with the electromagnet poles created. (I.e. in L1 or L2, what happend if half of the coil winding is in opposite direction. Half Clockwise and half CCW) ??? Thanks in advance.. 🙏🙏🙏🙏🙏🙏
Would the motor where the start cap stays in, be stronger than one where it kicks out? Is this not essential some form of a multi phase motor? Its just tuning single phase into 2 phase?
Hi there....great video....a little quiet....but very good. Please tell me....I'm no expert, just observing, but in the UK we have single phs Live and Neutral. Your schematic shows L1 and L2 as with the USA. 1. Is this a kind of 2 phase arrangement with two different angles ?....is there a Neutral? 2. In an induction motor, is the Rotor always a magnet? I see many schematics showing just a coil of wire? Appreciate your clarification. Best Regards Rob
This is a single phase motor. The second phase is artificially created with the addition of the second winding with the capacitor. This is how you would start a single phase motor in the UK.
With an induction motor, the rotor is not a magnet, but is a squirrel cage type. Current is induced (hence the name) into the rotor, and this current creates a magnetic field similar to a magnet.
Thank you for making such as good video! All kind of single phase motors are need out of phase current in motor wiring(start&run) to start or keep running the motor in a AC circuit, right? in this full AC circle, i1 with i2 has 90 degree out of phase. from 0 degree to 90 degree, the direction of the current is from the AC source to capacitor, the capacitor charge from 0 to the peak. what about the direction of the current flow in i1 in the same period?
This is awesome... I am trying to fix my table fan which wont start and I believe this is the same phenomenon that works for table fan motors... I have checked out the start capacitor charges and discharges fine, which leaves me with trying to get to the thermo fuse which I believe has blown out...
1/ I'm still struggling to understand the role of the capacitor (from 3:21). What I understand is that the capacitor act as a negative resistance while it's charging (it's sucking hard the current), so the current goes faster on the cap side (as it want to fill the cap). The cap is on the red branch, so the current should goes faster (the red peak of current should come before the purple one), but actually its the oposite you show at 4:59. I'm wrong somehwere, but where? 2/ I'm also confuse with the second role of the cap (it's another question!). Before your video, I first thought a sart cap was acting like a battery : it store ennergy and then release it, to boost the circuit (to gve more starting torque) at the beggining, when it need kinetic energy. But actually that doesn't seems to be the role of the cap in your circuit. In your circuit the cap seems to be use only to slighly move the current of the start winding forward (in between the 2 current peaks of the main winding) so it can attract the magnet forward a little bit before the main winding does.
@@RoddyMcNamee Man, I am stuck with some really wiered AC motor wiring if you can shed some light it will be great. It is an extractor motor 240v and takes max one to 3 amps, But what is strange that after the electronic circuits it has six wires connected to the motor, the top three are connected to the electronic circuits but the other three are not connected directly to the electronic circuits at all. There is no continuity between the wires except two wires shows continuity but the wires that shows continuity one is connected to the electronic supply side but the other one is not and there is no continuity between any other wires, I took a new one that is working and tested that one and it is the same thing yet it works , i have never encounter anything like befor if you can help you will have my deepest respect. So far every has fallen on it ha ha ha.
@@Dailymailnewz does the extractor fan have variable speeds, e.g. a speed switch, if so, the extra wires may be for different windings of the motor relating to different speeds????
@@RoddyMcNamee yes but there is no continuity except two looks like they have done through that electronic circuit separately will work it out no worries I work as an electrician this is the first time I saw some things like but no worries thanks
Thanks! Just one question: does the cap works only the first time (and then the magnet turn by inertia, or does it constantly give a push on the magnet?). On my fan, it seems to always work (there isn't any system to stop it). But in this case, why do we call it a starting cap? (what's the difference with a run cap?).
Yes, it can operate for the first cycle and then once it has established a turning direction it will continue in that direction. This would be a starting capacitor. Alternatively, you could have a start and run capacitor that causes the motor to run at the start and stays connected to keep the motor running.
@@RoddyMcNamee thanks a lot for your reply (I watched the video for a 4th time and noticed you said it!). Seems you made the best video on this topic on the whole web, thanks!
When you hold a compass in your hand, what direction does the needle with the N point towards. Same applies here. The North seeking pole points towards the North Pole.
@@RoddyMcNamee No it doesn't. wtamu.edu/~cbaird/sq/mobile/2013/11/15/why-does-a-magnetic-compass-point-to-the-geographic-north-pole/#:~:text=When%20it%20comes%20to%20magnets,to%20the%20geographic%20north%20pole.&text=The%20geographic%20north%20and%20south,rotation%20axis%20intercepts%20earth's%20surface.
Im replacing a refrigerator condencer fan motor because it stopped starting on its own and I realized it will start every time if it stops in one position say verticle for simplicity. If it stops horizontal I have to turn the fan 1/4 turn so it's facing verticle and it will start again. Does anyone know why this happends? I know it isnt repairable in this case just very curious.
How do you reverse such a motor? Is it called a "two phase" motor with the second winding and capacitor added? What is a "split phase" motor? Which is more common? Thanks.
Joe, you would need a third winding that also has a capacitor. The winding will be made equal and opposite to the second winding. I'll do a video on it to explain better.
It seems like if you could invert the current to the second phase this would make its phase effectively lag that of the first winding's phase by 90 degrees, thereby reversing the rotation. Or if you could somehow shift the second winding's phase forward by 180 degrees that would also work.
Joe, to reverse a two phase motor you need to reverse one of the phases. In your case you have, I expect, a single phase (split phase) motor. I say this because the domestic electrical supply to a house is generally single phase only. However some washing machines the motors are already wired to rotate in both directions. If you look at your motor can you see two capacitors? They probably look like cylindrical objects? If so, then you are in look and you just need to make sure the power is "split" from the supply to the opposite capacitor to the one it currently is connected to.
Since BS 7671 requires that all machine cannot automatically restart in the case of power normalise after an outage, it means need to install a start / stop push button, with the start button to be electrically latch in parallel to NO relay of L1? Correct me if i am wrong. Thx man
Hellow sir Well taking this concept and using 3 phase wire with 4 pole along with above top view of stator im bit confused as i couldn't relate. It would be grateful if you could make video on rotating magnetic field of 3 phase with 4 pole particularly.
The run winding is much different than the start winding due to the value of inductance. Since the run winding is made to carry the larger current the resistance will be minimal as opposed to the start circuit where resistance is larger with a lesser inductance and the capacitor in series the will offset the phase angle from the start. In your video you made it seem that the two are both the same value of inductance.
Did you have the audio turned off when you watched the video? On the rotor, "N" means the "North Seeking" end, and "S" means "South Seeking" as he says very clearly as he explains how it works.
There's another thing I don't understand. Let's say there's a heavy gear put on the motor and it needs 10 seconds to spin up to it's normal RPM. The AC current is always 50 or 60 Hz... As soon as the motor makes a fragment of 1 revolution, the current already gets to it's opposite value and the motor will slow down and get to it's start position. How the motor spins up in that case? The rotor must go forward/backward 50 times a second. That's the thing that I can't find on the internet, maybe because of my bad English or my thoughts are totally wrong.
hey man u r explanation very good why dont increase your volume , i cant hear your properly next time if u post any video, pls use a gud mic so that every body can understand,
If you listen, he was saying: “the north seeking pole and the south seeking pole”. He is very correct by his own definition. Consider the Earth being a big magnet as it is, all magnetic compasses align themselves so one end points to the North Pole and the other to the South Pole. The end of the compass pointing to the North Pole is called the north seeking end and is labelled N. It is not the North Pole but rather a mini South Pole aligning itself and being attracted to the gigantic North Pole of the big Earth magnet. Everything he said makes perfect sense! Cheers.
C is for capacitance. So for a capacitive circuit, the current ( I) leads the voltage (V). (CIV) L is for inductance. For an inductive circuit, the voltage (V) leads the current (I). (VIL) Put it together (CIVIL)
@@RoddyMcNamee Amazing. I usually use ELI ICE which a lil bit longer. E(Voltage) L(Inductive) I(Current), C(Capacitive) "E leads I for Inductive" which obviously the L in between means it is Inductive and also "I leads E for Capacitive." Though they are still the same. Thanks!
Best explanation I have ever seen for starting single phase AC motor. Impressed that you also covered the variations of starting systems. A little louder would have been good, but my thanks to you for helping me.
A little louder would have been good [2]
Watching this makes me wonder why I've never seen this concept explained so clearly before? You make it so clear and simple!
Hands down, the best explanation of how an AC motor works! I'm a visual learner and that was clear as day!
Hands down the best explanation of this I have ever come across. Love the capacitance slider to achieve 90 degrees. Thanks.
I have probably seen hundreds of images, diagrams, text explanations and videos and none of them made it 'click' for me. Your video did it. It was simple yet well detailed. Thank you!
You did it, you killed it, you got the explanation well easily explained with the basic/fundamental Electrical & mathematical principles, without complexities. Well presented! Thanks. More of such
You realize that same polarities reject, right?
Lol this means you didn't understand it properly ogunka
@@victoralejandro3460His explanation of polarities was the only mistake he made. Everyone knows opposites attract.
Thanks for a very clear and definitive presentation - your graphics helped a lot. I especially liked the one where you increase the capacitance with the "slider" and show the effect on the vector and field windings diagrams. Great job!
Fantastically done, was searching for ages on how to make a DIY single phase AC motor, couldn't find anything i understood until i stumbled across this, hats off to you!
Good video. Filled in some blanks in my mind on what is going on with a capacitor and AC motors and what they do.
Awesome. I don't know how many times I've looked this up over the years. Your explanation along with recently looking up an example of a person using capacitors to get around a split phase supply to make a three phase motor to work has finally made this "click."
Thanks.
I watched many animated videos but this one explained the best. I now know what happens. Thank you. lol won't forget your voice.
explained so well and in such a simple way, I got everything even with such a low volume. Thanks for delivering
Excellent video except for the very low audio. Also as pointed out previously, opposite poles attract, similar polls repell, not what the animation is showing, otherwise one of the best explanations I have seen on TH-cam.
I spent a while looking for a good explanation of this. This is a great explanation! Thank you!
Its amazing that many other videos have fancy animations which somewhat help to understand this concept, but this "roughly" but very clearly drawn presentation really helped me to understand it! That CIVIL is great to know, never heard of it.
Respected Sir
I have watched all videos regarding this topic, but trust me, i have never found any video that is better than you. Thank you so m😊uch explaining this topic in a very simple way
been looking for this simple explanation all day. thank you
thank you very much men, this is the best explanation I have ever had for this subject.
May God bless you.
i have watched many videos with and without animation but by graph and 2D explanation i understood it very well. very good way of explaining the concept
Excellent explanation. Most videos dont really show the mathematical model behind monophase motors and just give a qualitative explnation. I find it much easier to understand whats happening when you use phasor and how each current and voltaje quantity are out of phase
excellent explanation and perfect presentation skills.
Keep me updated with any further videos .
best explanation I've seen so far, deserves more views. Keep making more videos. Cheers.
Finally after 5 vids I understand why they need a capacitor thanks
Help me sir, why do we neee capacitor here?
Please fix the volume!
Thank you for this explanation! I recently discovered single phase brushless when I took apart a three wire projector fan. My projector has gone through two fans now (8 months apart) and throwing fan speed errors again. The fans still work but after 10 minutes the projector throws a fan speed error. I think the projector is running the fan at too low voltage causing premature failure of the tachometer signal (hall effect sensor circuit) or is wearing out other circuit components and the fan is truly running slower than it should. I'm hoping to gain a better understanding and hopefully fix or re-engineer the projector to stop going through fans. The projector is BENQ W1070. If I run the projector in "high-altitude mode" it runs the fan at high speed and it doesn't get the error but is so loud I can't enjoy using the projector.
Oh, I should add that it only has two wires but four poles on the stator. Perhaps the capacitor is hidden on the stator somewhere to avoid having to solder four wires to the circuit board. I'll have another look when I get home from work.
Beautifully explained graphically. Thanks!
Thanks for great video but please annotate that similar magnetic poles repell and different attract.
The reason I ask is that I think I have a two phase motor like the one in your video. It came from my old washing machine and I'm using it on my (corded) A/C electric mower now, but need to reverse the rotation for the blades to cut the grass. I've turned the blade upside down as a temporary fix, but would like to know if the motor can be reversed. Thanks.
whether there will be a different in starting and running winding current?
0:45 North of the magnet is not being attracted by north of the magnetic field. Them repell each other.
Excellent video!!
And he repeats the same mistake at 1:08.
@@charleslyell3748 I made a video on my channel! I’ll translate it to English! I correct this mistake on my video!
Is the direction of rotation determined by the layout of the axillary windings?
Excellent Elaboration of a single phase motor.👍
Why current leads in Capacitor & Lags in Inductor and how does it affect the motion of motor?
+subu das Have a look at this video on power factor correction. It shows how a capacitor can vary the phase angle of current going to a motor.th-cam.com/video/DSwaCGRjGLg/w-d-xo.html
Best explanation I've seen!
So, one question just popped-up in my mind. Is is possible to create three phase from a single phase supply by using two different capacitors that has correct capacitances?
Thank You! I've wanted someone to explain how this this works for a long time! I understood that it was needed to start the directional motion but didn't understand how or why!
Very good demonstration. So what you are doing is using the capacitor in the start windings make the motor start like a two phase motor! Correct?
Okie-Tom yes.
Thank you for concise and easily understood explanation. I have motor where capacitance is removed from circuit with relay. How is this accomplished? Thanks again, Mark
IRVPIANODRIVER probably a centrifugal switch.
Thank you so much pro! :) It's very clear and easy to understand!
You made the best video explaining how to start single phase motor. So in theory you can use various size start capacitors which will create phase angle different than ideal 90 degree, but until there is enough torque motor will start normally? I am asking because I have motor with missing start capacitor and I don't know which value to choose. Is there any formula to calculate capacitor value from windings resistance maybe?
You'll need to know the inductance of the winding as well as its resistance. If you look at this video th-cam.com/video/DSwaCGRjGLg/w-d-xo.html it will show you the formulas and how to determine the phase angle. Hope that helps.
This is an excellent explanation in my opinion.
Is there any way you could do a description on how a brushed AC motor starts/runs?
howardtoob Thanks for the comment. When you say a "brushed AC motor" do you mean a synchronous AC motor?
Specifically a central vacuum motor which, I think, is a non-synchronous universay motor???
how do you determine whether or not a motor needs a start or run capacitor, and how to you calculate the amount of farad's each capacitor requires?
First of all, I want to say thank you for the best & simple explanation video.. This single video has almost everything I've been looking for about single phase induction motor.
Second thing, if you don't mind, please explain a bit more about winding direction in relation with the electromagnet poles created. (I.e. in L1 or L2, what happend if half of the coil winding is in opposite direction. Half Clockwise and half CCW) ???
Thanks in advance..
🙏🙏🙏🙏🙏🙏
I could hear it okay with the headphones on, but not through my speakers. Terrific explanation, though.
Excellent sir, Thank you , Good Luck.
Would the motor where the start cap stays in, be stronger than one where it kicks out? Is this not essential some form of a multi phase motor? Its just tuning single phase into 2 phase?
Hi there....great video....a little quiet....but very good. Please tell me....I'm no expert, just observing, but in the UK we have single phs Live and Neutral. Your schematic shows L1 and L2 as with the USA. 1. Is this a kind of 2 phase arrangement with two different angles ?....is there a Neutral?
2. In an induction motor, is the Rotor always a magnet? I see many schematics showing just a coil of wire?
Appreciate your clarification.
Best Regards
Rob
This is a single phase motor. The second phase is artificially created with the addition of the second winding with the capacitor. This is how you would start a single phase motor in the UK.
There is only one live and one neutral.
With an induction motor, the rotor is not a magnet, but is a squirrel cage type. Current is induced (hence the name) into the rotor, and this current creates a magnetic field similar to a magnet.
Thank you for making such as good video! All kind of single phase motors are need out of phase current in motor wiring(start&run) to start or keep running the motor in a AC circuit, right? in this full AC circle, i1 with i2 has 90 degree out of phase. from 0 degree to 90 degree, the direction of the current is from the AC source to capacitor, the capacitor charge from 0 to the peak. what about the direction of the current flow in i1 in the same period?
I have a single phase 110v a.c. motor and I would like change rotation could you assist me with it?
Beautifully explained. Thank you.
why are you using a capacitor , when you add two coils so that you can make it work automatically ?
+devilantony krop
The capacitor creates a phase difference between the two coils and thereby creates a rotating magnetic field.
This is awesome... I am trying to fix my table fan which wont start and I believe this is the same phenomenon that works for table fan motors... I have checked out the start capacitor charges and discharges fine, which leaves me with trying to get to the thermo fuse which I believe has blown out...
Your the best.. nice work.
Beautifully explained.
1/ I'm still struggling to understand the role of the capacitor (from 3:21). What I understand is that the capacitor act as a negative resistance while it's charging (it's sucking hard the current), so the current goes faster on the cap side (as it want to fill the cap). The cap is on the red branch, so the current should goes faster (the red peak of current should come before the purple one), but actually its the oposite you show at 4:59. I'm wrong somehwere, but where?
2/ I'm also confuse with the second role of the cap (it's another question!). Before your video, I first thought a sart cap was acting like a battery : it store ennergy and then release it, to boost the circuit (to gve more starting torque) at the beggining, when it need kinetic energy. But actually that doesn't seems to be the role of the cap in your circuit. In your circuit the cap seems to be use only to slighly move the current of the start winding forward (in between the 2 current peaks of the main winding) so it can attract the magnet forward a little bit before the main winding does.
GREAT video. Very well and simply explained whilst still going into a decent level of detail. Great profile pic too! ;) YNWA!
Thanks James. Good spot on the profile pic. YNWA.
@@RoddyMcNamee Man, I am stuck with some really wiered AC motor wiring if you can shed some light it will be great. It is an extractor motor 240v and takes max one to 3 amps, But what is strange that after the electronic circuits it has six wires connected to the motor, the top three are connected to the electronic circuits but the other three are not connected directly to the electronic circuits at all. There is no continuity between the wires except two wires shows continuity but the wires that shows continuity one is connected to the electronic supply side but the other one is not and there is no continuity between any other wires, I took a new one that is working and tested that one and it is the same thing yet it works , i have never encounter anything like befor if you can help you will have my deepest respect. So far every has fallen on it ha ha ha.
@@Dailymailnewz does the extractor fan have variable speeds, e.g. a speed switch, if so, the extra wires may be for different windings of the motor relating to different speeds????
@@RoddyMcNamee yes but there is no continuity except two looks like they have done through that electronic circuit separately will work it out no worries I work as an electrician this is the first time I saw some things like but no worries thanks
Thanks! Just one question: does the cap works only the first time (and then the magnet turn by inertia, or does it constantly give a push on the magnet?). On my fan, it seems to always work (there isn't any system to stop it). But in this case, why do we call it a starting cap? (what's the difference with a run cap?).
Yes, it can operate for the first cycle and then once it has established a turning direction it will continue in that direction. This would be a starting capacitor. Alternatively, you could have a start and run capacitor that causes the motor to run at the start and stays connected to keep the motor running.
@@RoddyMcNamee thanks a lot for your reply (I watched the video for a 4th time and noticed you said it!). Seems you made the best video on this topic on the whole web, thanks!
Good. Missed one basics there may b unknowingly... Regarding magnetic poles property 😊
Yes not correct
When you hold a compass in your hand, what direction does the needle with the N point towards. Same applies here. The North seeking pole points towards the North Pole.
@@RoddyMcNamee No it doesn't. wtamu.edu/~cbaird/sq/mobile/2013/11/15/why-does-a-magnetic-compass-point-to-the-geographic-north-pole/#:~:text=When%20it%20comes%20to%20magnets,to%20the%20geographic%20north%20pole.&text=The%20geographic%20north%20and%20south,rotation%20axis%20intercepts%20earth's%20surface.
This is a wonderful video.
Im replacing a refrigerator condencer fan motor because it stopped starting on its own and I realized it will start every time if it stops in one position say verticle for simplicity. If it stops horizontal I have to turn the fan 1/4 turn so it's facing verticle and it will start again. Does anyone know why this happends? I know it isnt repairable in this case just very curious.
How do you reverse such a motor? Is it called a "two phase" motor with the second winding and capacitor added? What is a "split phase" motor? Which is more common? Thanks.
Joe, you would need a third winding that also has a capacitor. The winding will be made equal and opposite to the second winding. I'll do a video on it to explain better.
@@RoddyMcNamee What is your 2D draw software?
It seems like if you could invert the current to the second phase this would make its phase effectively lag that of the first winding's phase by 90 degrees, thereby reversing the rotation. Or if you could somehow shift the second winding's phase forward by 180 degrees that would also work.
Joe, to reverse a two phase motor you need to reverse one of the phases. In your case you have, I expect, a single phase (split phase) motor. I say this because the domestic electrical supply to a house is generally single phase only. However some washing machines the motors are already wired to rotate in both directions. If you look at your motor can you see two capacitors? They probably look like cylindrical objects? If so, then you are in look and you just need to make sure the power is "split" from the supply to the opposite capacitor to the one it currently is connected to.
Nice Job, thanks to you I am starting to understand !!!
Since BS 7671 requires that all machine cannot automatically restart in the case of power normalise after an outage, it means need to install a start / stop push button, with the start button to be electrically latch in parallel to NO relay of L1? Correct me if i am wrong. Thx man
please upload another video for a three phase induction moter like this.
Nice and useful but I think you changed the colours on the waveform diagram.
Beautiful !!!!.................................... Simple n Clear !
Very good explanation, as a slow person I should know.
I can't thank you enough. Great job!!
Thanks Sir.. this was nicely explained.
Good explanation, thanks for making the video!
Wow thank u dude Incredible explanation
edit: btw what software did u use for explanation
So why do we need a Starter capacitor and a Run capacitor in a fridge ac compressor motor. There is only need for 1 capacitor.
Hellow sir
Well taking this concept and using 3 phase wire with 4 pole along with above top view of stator im bit confused as i couldn't relate. It would be grateful if you could make video on rotating magnetic field of 3 phase with 4 pole particularly.
okay good presentation the only thing I couldn't get is does the opposite pole repel plus why are u wishpering
Great job explaining this! Thank you
Excellent explanation!
awesome explanation very good
The run winding is much different than the start winding due to the value of inductance. Since the run winding is made to carry the larger current the resistance will be minimal as opposed to the start circuit where resistance is larger with a lesser inductance and the capacitor in series the will offset the phase angle from the start. In your video you made it seem that the two are both the same value of inductance.
one last question.....is the motor in your schematic a 2 pole??....looks like it!
It has 4 poles, or two pole pairs.
Many thanks Rob. I'm in Refrigeration and Air Con and we would class this as a 2 pole motor. We would add a potential or current relay.
the best explanation ,thank u so much ,but i hope you fix the volume
Good explanation, but you've got the magnet attractions backwards. Opposite poles attract, and like poles repel.
From when did same poles started attracting!!
Did you have the audio turned off when you watched the video? On the rotor, "N" means the "North Seeking" end, and "S" means "South Seeking" as he says very clearly as he explains how it works.
Best explanation ever
There's another thing I don't understand. Let's say there's a heavy gear put on the motor and it needs 10 seconds to spin up to it's normal RPM. The AC current is always 50 or 60 Hz... As soon as the motor makes a fragment of 1 revolution, the current already gets to it's opposite value and the motor will slow down and get to it's start position. How the motor spins up in that case? The rotor must go forward/backward 50 times a second. That's the thing that I can't find on the internet, maybe because of my bad English or my thoughts are totally wrong.
What I think you are referring to here is called "Slip". If you look up some videos on Torque / Slip for induction motors it might help.
@@RoddyMcNamee Thank you so much! I subscribed to your channel and clicked the bell too. 🤩
Great job buddy
Sir a perfect explanation.but just check your ckt diagram and noticed the position of capacitor an centrifugal switch ? I think it is wrong
very awesome explanation like it .
thank you this was very helpful
superb🙈❤️🤛
hey man u r explanation very good why dont increase your volume , i cant hear your properly next time if u post any video, pls use a gud mic so that every body can understand,
Great explanation!
Thank you, the video was very helpful!
One major issue: Different poles attract each other, the sane poles repel from each other.
Exactly
Right...
If you listen, he was saying: “the north seeking pole and the south seeking pole”. He is very correct by his own definition. Consider the Earth being a big magnet as it is, all magnetic compasses align themselves so one end points to the North Pole and the other to the South Pole. The end of the compass pointing to the North Pole is called the north seeking end and is labelled N. It is not the North Pole but rather a mini South Pole aligning itself and being attracted to the gigantic North Pole of the big Earth magnet. Everything he said makes perfect sense! Cheers.
good explanation.really like it
Please increase a bit volume... Thank you...
Can anyone explain the how the CIVIL works please?
C is for capacitance. So for a capacitive circuit, the current ( I) leads the voltage (V). (CIV)
L is for inductance. For an inductive circuit, the voltage (V) leads the current (I). (VIL)
Put it together (CIVIL)
@@RoddyMcNamee Amazing. I usually use ELI ICE which a lil bit longer. E(Voltage) L(Inductive) I(Current), C(Capacitive) "E leads I for Inductive" which obviously the L in between means it is Inductive and also "I leads E for Capacitive."
Though they are still the same. Thanks!
Great explanation sir
Great explanation.
Volune maxed out and still can’t hear.. tried earphones and nothing. Had to put it on my 4000 watt stereo to hear and still hard to undrstand..