Thank you so much!! I have my first physics exam on Monday and this was the only thing I didn't get and you explained it much better than my teacher. Thank you!!
Your video just cleared my mind up right from the beginning. I spent time solving this particular problem where I was asked to find power. I found the turns ratio and was going thru some other calculations and i watched your video then realized, oops the primary voltage in the circuit is DC and no voltage is induced. My answer was zero from the jump lol...Thanks a lot
Thank you for this video! You are a great teacher! I would like to request a video on practical application of transformer calculations! Something like - if you have 19 motors running on a three phase, 3kVA, 480-120VAC step-down transformer, will there be enough amperidge created to support the circuit? Thank you again!
the unit of the Power on transformer is VA not Watt .. because there is only current and voltage .. so power unit on transformer and generator is VA .. but power on motors the unit is watt because there is movement .. so there is big different from watt and VA There are two type of losses in a transformer; 1. Copper Losses 2. Iron Losses or Core Losses or Insulation Losses Copper losses ( I²R)depends on Current which passing through transformer winding while Iron Losses or Core Losses or Insulation Losses depends on Voltage. That’s why the Transformer Rating may be expressed in kVA,Not in kW.
the peice itself can only be in parallel or series and cannot be put one after another in any circuit, in parallel - voltage remains the same while current is manipulated by the ratio of turns and in series - the amperage remains the same and the voltage is manipulated by ratio of turns, wattage isonlyanoutputrating,nota voltagedropoftheequipmentused, thatwouldbetheimpedanceofthecoilshenrys into resistanceinohms youfoundthewattageofthepeak frequencyvarianceofsomekindorsomeshitorapeicetofindingit
woops, i didn't research beforehand replying to your comment, looks like a pulsed dc will work since the current becomes 0 at some point and changes the magnetic field :)
Your turns ratio formula is upside down, its Nsec/Nprim not Nprim/Nsec, kind of a big mistake to make. Look at page 568 Floyd's Principles of Electric Circuits 8th edition.
Hello. I'm sorry you did not find this video helpful. The video is intended to introduce the topic of transformers and the formulas do work for simple transformers. For real transformers they are not 100% efficient so the power on one side will not be the same on the other side, but this video is for simple transformers where we assume they are efficient. Sorry for any confusion.
Im stuck with question where I am given Vp = 339 V Amplitude Vs = 13.56,, Np = 100,, Ns = 4 what is Is and Ip? And I am not even given any Power value so I wont be able to use VI = P and if I tried to do the question by using resistor value like R = V/I or any other resistor calculation from the OHM's Law triangle I cant because I am not given a resistor value. Please help me with this question.
kinda wrong, transformer work by changing magnetic field. The ac is changing its current direction which means its also changing the magnetic field direction, thus the magnetic field is changing. The dc will work just once since there is a sudden change in magnetic field when switched on, but the next it will not work anymore.
I have a question Mr. PhysicsEH. If I have a Power Generator 5000w max 110 or 240 volts. Can I make a transfromer with output of 96 volts 450Amps? Do you help me to make that transformer please?
well great to begin with but the wattage deal was a fake considering the voltage went up, it would be a series circuit leading the cause of the current to remain the same creating more wattage in the secondary output hinting 2:1 ratio...as far as the 1v ? below me it would conduct but most likley wouldnt power anything it needs the magnetism to substain itself and depending on howmany watts operate urdevice normally it would be odd to havethatkind ofamperage at1v itwoulddiequickwithoutamp source
This can't help anyone to actually make transformer. How big core to use, what induction to allow as max in it, how many winds per Volt for that (at 50 or 60 Hz), how thick wire at specified primary current, how thick at secondary, for how much to increase secondary voltage with average losses expected in transformer of that size...?
@ PhysicsEH This is completely wrong. If we have 100 rounds on primary coil and 200 rounds on secondary, the voltage is twice lowered. From 20V to 10V. Simple, because we have a more ressistance on second coil. So: 100/200=0.5 x 20= 10V
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Thank you so much!! I have my first physics exam on Monday and this was the only thing I didn't get and you explained it much better than my teacher. Thank you!!
Your video just cleared my mind up right from the beginning. I spent time solving this particular problem where I was asked to find power. I found the turns ratio and was going thru some other calculations and i watched your video then realized, oops the primary voltage in the circuit is DC and no voltage is induced. My answer was zero from the jump lol...Thanks a lot
I just wanted to say thanks for uploading this, It's very clear and it helped me understand very quickly what I needed to know.
oh my goodnesss i cant thank you enough for this video, it has helped me so much and i wish you were my physics teacher :(
Thanks a bunch now i can do my extended experimental investigation on transformers.
Thank you for this video! You are a great teacher! I would like to request a video on practical application of transformer calculations! Something like - if you have 19 motors running on a three phase, 3kVA, 480-120VAC step-down transformer, will there be enough amperidge created to support the circuit? Thank you again!
sir what is the formula to compute the wire i use in the primary and the secondary?
please
thanks. . .
Thank you, sir, your lecture was of real help.
Big help. Made it look so simple..Thank you
thank you sir for teaching us
may God bless you as you continue to teach us for free
sir..what is the formula of getting the size of wire if the number of turns and voltage is given...THANK YOU SIR....
Thank you so much I actually understand this chapter now
the unit of the Power on transformer is VA not Watt .. because there is only current and voltage .. so power unit on transformer and generator is VA .. but power on motors the unit is watt because there is movement .. so there is big different from watt and VA
There are two type of losses in a transformer;
1. Copper Losses
2. Iron Losses or Core Losses or Insulation Losses
Copper losses ( I²R)depends on Current which passing through transformer winding while Iron Losses or Core Losses or Insulation Losses depends on Voltage.
That’s why the Transformer Rating may be expressed in kVA,Not in kW.
nice one it really helped me a lot thank you
its been a while! great review
A very good explanation
i've become expert on transformer after watched this video.. come to me megatron.
Very Nice! Thanks a lot for giving us your time!
the peice itself can only be in parallel or series and cannot be put one after another in any circuit, in parallel - voltage remains the same while current is manipulated by the ratio of turns and in series - the amperage remains the same and the voltage is manipulated by ratio of turns, wattage isonlyanoutputrating,nota voltagedropoftheequipmentused, thatwouldbetheimpedanceofthecoilshenrys into resistanceinohms youfoundthewattageofthepeak frequencyvarianceofsomekindorsomeshitorapeicetofindingit
God bless you ❤️
Many many thanks sir...
woops, i didn't research beforehand replying to your comment, looks like a pulsed dc will work since the current becomes 0 at some point and changes the magnetic field :)
Your turns ratio formula is upside down, its Nsec/Nprim not Nprim/Nsec, kind of a big mistake to make. Look at page 568 Floyd's Principles of Electric Circuits 8th edition.
I think its depent on high side?..sometime pimary side is high, sometime pimary side is Low....
Oh yes, besides it isn't...
Hello. I'm sorry you did not find this video helpful. The video is intended to introduce the topic of transformers and the formulas do work for simple transformers. For real transformers they are not 100% efficient so the power on one side will not be the same on the other side, but this video is for simple transformers where we assume they are efficient. Sorry for any confusion.
So simple! Thank you'
how to find the exact no. of turns of primery and secondry for a given power and voltages...... eg 50 kva ,, Vp=11kv and Vs=400v
Im stuck with question where I am given Vp = 339 V Amplitude Vs = 13.56,, Np = 100,, Ns = 4 what is Is and Ip? And I am not even given any Power value so I wont be able to use VI = P and if I tried to do the question by using resistor value like R = V/I or any other resistor calculation from the OHM's Law triangle I cant because I am not given a resistor value. Please help me with this question.
if i measure 26 ohm. on my secondary can i be able to calculate what voltage will come out. and if so what formula to use
kinda wrong, transformer work by changing magnetic field. The ac is changing its current direction which means its also changing the magnetic field direction, thus the magnetic field is changing. The dc will work just once since there is a sudden change in magnetic field when switched on, but the next it will not work anymore.
I have a question Mr. PhysicsEH. If I have a Power Generator 5000w max 110 or 240 volts. Can I make a transfromer with output of 96 volts 450Amps? Do you help me to make that transformer please?
u made me understand it!
thankuuuu!!!!!
well great to begin with but the wattage deal was a fake considering the voltage went up, it would be a series circuit leading the cause of the current to remain the same creating more wattage in the secondary output hinting 2:1 ratio...as far as the 1v ? below me it would conduct but most likley wouldnt power anything it needs the magnetism to substain itself and depending on howmany watts operate urdevice normally it would be odd to havethatkind ofamperage at1v itwoulddiequickwithoutamp source
Heyyyy, l think there is a mistake when calculating the ratio Np/Ns=100/200=0.5 and no 2.....
thank you verry much sir .
good work
If its a Current transformer 2000:5 what is the formula!!
thank you easy to understand
well... for some reason I don't get any audio. ?? I wanted to learn here.
Good. Thanks 🙏🙏🙏🙏🙏🙏
which wire in primary???
which wire in secondary???
hi is that te same with ferrite transformer you now the ( E,I ) shape transformer
i know how to calculate normal transformers but not the ferrite wans
Does transformers work when primary side's input voltage is 1v-?
Please explain where the 5 A comes from. Is that what is available at the wall outlet or another source ?
+DSKiller619 It matters ,cuz of the max power that can come in :)
+BlackLocustMusic it is given. no load no current.
When do i flip the fraction and when do i not flip?
Thanks teacher
i dont get it how to you rerage it when you have 100 over 200 is over 5 were do you go from that !
What happens to the frequency?
Is frequency in = frequency out in a E transformer?
+Hossein Hayati Yeap.
THANK U SOOO MUCH!!
IT HELPED ME ALOOT!! ;)
rearrange that? thanks for skipping the only thing i wanted to know
to rearrange it you cross multiply. Ex 200x20 = 4000, 4000/100 = 40V
Or 0.5=20/Vs
Think again
The part that you learn in Grade 2
I wanna make a real working transformer that is probably my dream job
i have # 8 solid copper wire and a core, and i want to wind a step up step down i need a formula to obtain primary and secondary turns
Jerome Persaud
tras
thanks you sir
Thankyou
Very acurate💪
wooooooooooooooow , Excellent
About isolation transformer
Rearrange that formula? 100/200 equals 20/ V in secondary. Do not understand the rearrange portion of the lesson. thank you.
200x20/100
Thank you
This can't help anyone to actually make transformer. How big core to use, what induction to allow as max in it, how many winds per Volt for that (at 50 or 60 Hz), how thick wire at specified primary current, how thick at secondary, for how much to increase secondary voltage with average losses expected in transformer of that size...?
transformers aren't measured in watts as there is no power factor calculation. KVA
sir y we have different no. of turns on both side
Anmol to increase/decrease voltage??
Yarım yamalak ingilizcemle okuldakinden daha iyi anladım.
Core area calculation is not define.
i spent 2 nights trying to "rearrange your formula i still can't get 40 from it! i am so angry right now fuck!
a watt is a watt no matter watt! something u taught me. lol what kind of a nerd likes this stuff. me! oh, and sorry. let me know if u got this
i can't find 40 volts
why?...you can try again culculetion......
100/200=20/vs
100vs=200x20
vs= 4000/100
vs=40v.....
@
PhysicsEH
This is completely wrong. If we have 100 rounds on primary coil and 200 rounds on secondary, the voltage is twice lowered. From 20V to 10V. Simple, because we have a more ressistance on second coil. So: 100/200=0.5 x 20= 10V
you must be wrong
Arfi new
thank you sir