Transformers Explained - How transformers work
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- čas přidán 3. 06. 2024
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can you make a video how dam and solar make electricity
how smartphone battery works and powersupply
Do a video on how electromagnetic waves are created
I have a question, according to the formula. V.I = power it is true that voltage goes up current comes down and vise a versa but from the other side v= I.R and R is constant so how voyage can go up and current come down?!!!!🧐🧐🧐🧐🧐
Thank you for the information it was helpful.
The Engineering Mindset is the only channel of which i listen through the sponsored section just out of respect for him, great job!
@@jeetenderkakkar7570 wah
Amen. This is an epic channel.
Why, though? It's not like he'll make any more money whether you watch it or not.
@@bruhmomenthdr7575 it's the advert duration time where the money is made. Guess it's the principle why he's watching that bit of the vid. Yet all due respect to the channel.
Me too guy
Of all the electrical engineering videos I have come across, yours are truly the best! The diagrams, pacing, and real-world examples makes learning and remembering so much easier, thank you!
Totally agree. This is an extremely informative and important channel. Haven't seen a better one yet.
5
I took apart and wound Transformers for 40 years and new the fundamentals. But I never learned how things worked out in these formulas. This was very informative. There was hardly a Transformer that I can take apart and not put back together. I did it a lot, but never had time to learn the aspects of it. And again I like your video oh, you're never too old to learn. When I wired houses back in my day, my boss told me there's only two things electricity can do. They can either work for you, or it can kill you. This is always stuck with me all these years.
Cool
*knew
I was just saying the same thing. I make transformers all day for linear amplifiers but I didn’t know all the facts. It’s good stuff to learn.
*never took the time to
Looks like we got a couple Hall monitors here lol. I guess they never made any mistakes that did you guys
I am a mechanic I have read many books that briefly explain induction. They leave me hanging saying the primary windings induce a voltage in the secondary windings … the end. You did a very excellent job at explaining how this happens . You really answered many of my questions thank you so much.
Your videos are just unmatched in quality. Watched a ton of them, always amazed at this each time!
Amen
It's scary how effective your videos are at teaching things dude, i have a lot of respect for you just for that.
I have 3 degrees in electronics and electrical engineering , your blog is so wonderful and explanatory. Your lecture on English and European voltage and power being different from American power, was the very best I've ever had . Thanks kindly and good luck .
There was so much more information included in this video than what I came here for, AND IT WAS ABSOLUTELY AWESOME!!!! thoroughly explained all those details with patience and love. and icing on the top was the Beer example which helped big time. Loved it. Thank you for such a thorough explanation :)
Very glad to hear it was of help. If there's anyone you feel could use this video please do send them a link it would really help them and us out
"America is/does/uses X, the rest of the world uses Y" is one of the most common phrases in science and technology. The US just likes being awkward.
I dun wanna be awkward anymore
Correct. Although I think they should change the name to freedom units..
and use the term "America" to refer only to the US as well
@@kelvynrodrigues3917 freedom units.
When you realize people in different places do things differently 🤯
I personally appreciate the beer glass analogy. It is a simple visual aid for a somewhat complex topic. I would have appreciated it had my instructor used it back when I was in school. Love your content.
1 Team
I am utterly impressed by the exceptional quality of your electrical engineering videos! It's not an exaggeration to say that your content stands head and shoulders above the rest. The meticulously crafted diagrams are a visual delight, making intricate concepts appear effortlessly clear. Your pacing is a masterclass in itself - it's neither too hurried nor too slow, allowing me to grasp every detail without feeling overwhelmed.
What truly sets your videos apart is the ingenious use of real-world examples. These relatable scenarios not only demystify complex theories but also ensure that the knowledge sticks in my mind like never before. Your dedication to providing such insightful and practical content is genuinely commendable.
I studied electronics and the explanations on your channel are the best I've ever seen on every subject.
Found the power triangle and power factor a little tricky to understand but the beer analogy is great.
Very much✌
That was helpful 😊
Transformer ratio K= (n1/n2)=(v1/v2)=(i2/i1)
where
V1 : voltage at the primary side
V2 : Voltage at secondary side
N1 : number of turns at the primary side
N2 : number of turns at secondary side
i1 : current at the primary side
i2 : current at secondary side
After working 35 years in a power plant, I never actually knew why transformers hummed.
I always thought it was because they didn't know the words.
This is the best explanation of electricity since I took a year of radio and TV repair in vo-tech!! I understand all of this... Wow... Thanks!!!
12:02 we call that power consumption (total power) in CZ it is "příkon" - i understand it as all energy that goes into a device, and performance, "výkon" the job the device does. We were taught that příkon is always greater than výkon of the device, because of heat etc..
A detailed explanation of the electrical transformer. Greetings to you💙💙💙💙💙
I work with them all the time on vintage arcade/pinball games. Lighting is usually either 6 or 12 v ac., and coils use 24 or 50 volts. Some motors and heavy duty coils run off the household current. They very rarely fail, though new folks sometimes think they do. Your video shows how simple they are with no 'moving' parts, though they can vibrate after they have seen many duty cycles.
Where I've seen transformers used:
I'm a Sound Engineer by profession and often encounter ground loop hum, especially when touring and working in older venues with high-watt dimmable lighting.
I once worked with a band who's Guitarist was an Electrical Engineer and his single coil pickups were creating an unacceptable buzz. I made sure his amp and pedals were in the same outlet and then ran a lead over to the main PA system to check for a "loop". No dice... He said "hold on"... Went to his van and pulled out a piece of plywood that had a MASSIVE 1:1 transformer on it and several outlets. Thing weighed about 30lb. He wanted to tap into the main inlet at the breaker box but I said "nope" Then he showed me his business card and website so I took a stage breaker out and allowed him to tap in there.
The amps and pedals from his guitar and the bass made absolutely NO unwanted noise. The ground loop that no amount of rewiring could solve was gone.
Heavy. Expensive. *Potentially* dangerous without ground. But useful.
Really excellent video. Answered a lot of questions I have always wondered about.
Probably one of the best videos of this subject. I do believe, however, that you neglected to mention that sometimes transformers with the same number of turns on both the input and the output are used for certain applications. The purpose of that design is to be able to transfer power between two different circuits at the same voltage, but keeping them electrically isolated. If I'm not totally wrong, it is similar in function to a heat exchanger where energy, in the form of heat, is transferred between two isolated systems.
Referred to as 'isolation transformers' and are used mainly to test/troubleshoot damaged and/or outdated/unsafe electronics. Largely as a safety precaution for Vacuum Tube electronics of the pre-60s/70s as they necessarily require high voltage supplies which could electrocute you if accidentally touched while open or if a fault shorted the hot side to the chassis. I forgot exactly but the transformer breaks one possible path for the current to travel through you if you came across the live while touching something grounded
Isolation transformers are used all the time for supplying non linear loads i.e. VFDs and other electronics that are prone to damage from voltage spikes.
We had an overhead AC crane that kept tripping on overvoltage faults. We would simply bucket up to the crane bridge cabinet and reset the drive. This was going on for months and we were getting tired of it.
We got ourselves a 75kva isolation transformer and installed it in between the main switchgear and the breaker panel that fed the crane. After wiring the xfmer after the switchgear and before the breaker, we never had an overvoltage problem again.
Certainly, the best video of transformers online.
This is very informative thank you. I am an automotive tech and in these gasoline engines you need to break the dc current somehow in the primary coil to collapse the magnetic field. Due to the principle of electromagnetic inductance this produces a surge in voltage in the secondary coil. Your explanation goes even further and makes me understand more deeply.
This not just simply explained, but it's master class presentation.
People with 0 knowledge could learn A LOT!
Amazing work!
Thanks and bless You! 🙏
Yep. !!! True that !!! I knew how to say Transformer.... and that was the extent of my knowledge on the subject, Now, not that I have a complete understanding aboot Transformers BUT !!! I now know A Heck of alot more than I thought I'd ever even be able to learn and know aboot Transformers!!! Man,if I only 1 would of had a teacher of that caliber in school I probably would of actually attended classes !!!! makes ME kinda sad m mad to dwell on it!!! Ohhh well, life goes on ‼️👍❗
Very helpful video, especially for HVAC. Understanding how all the components work together is important and I will definitely be passing this on to my apprentices
Great video. Started studying C.P. Steinmetz years ago & when I hear talk about electrons now I try to think about it the way he knew it worked, field theory (electron is 1 unit of dielectric force not a particle), and the dance of the atoms is even more beautiful and simple. Crazy he invented all of the math we use to build the electrified world today & he's suppressed because of his scientific beliefs. Great video thanks for your work this channel is awesome.
That's the best class about an engineering subject that I've ever watched on youtube. Thank you so much!
Quite an amazing job. The most toughest task is to make others understand and this piece has achieved it exceptionally well...👏
lol yeah, i mean isnt score indicative enough though, true theyre expensive they all do, and they all sound great
I work for a company building substation transformers as well as mobile substations. This video is spot on.
This was fantastically helpful! Thank you!!
I'm trying to build a tiny ground loop isolator for an audio mixer. Found a video, but didn't know what a transformer was. Now I have a couple ideas on how I might make this work! Thank you!
Daaaaaang! Astonishing simplified explanations. The numbers and calculations go by quite fast, but it's undestandable, you can't make it a maths channel. I'm a new fan of this channel!
Mucha appreciated work!
Great explaining..thank you
This is a transformer… and there’s more to it than meets the eyes…
Haha ofcourse someone was gonna say but still really funny
This is a transformer... it is in all likelihood a robot in disguise...
This is such a good explanation, i have watched a lot of videos about this subject but this one takes the price! very very nice, thank you !
im an apprentice lineman and I have been blown away by the clarity I've received from your videos. liked and subscribed
Love the beginning lolz. Great vid!
I hope you make and upload videos about:
- Basic calculations about transistors
(BJT, MOSFET, IGBT, JFET)
- Basic explanation of thrystor and triac
- AC capacitor basic explanation
- The simplest logic gate
- Arduino basic explanation
Never heard of most of these things but since I need to learn what's out there, I would certainly watch those videos
dude there's like a million videos already out there that explain all this stuff
@@tootaashraf1 I know, but most of the explanations are lacking in detail, so there are some who don't understand.
Done them already...go back through the older videos on the channel.
See my new MOSFET explained video here➡️: czcams.com/video/AwRJsze_9m4/video.html
I have seen a few of his videos and he really has a way of explaining. Very good information and easy to understand.
Been watching a lot of videos to better understand conceptually what's happening as I take my electrician courses and this is one of the best explained and presented. Thanks
Thank you. I have always been wonderring why we can "hear" electricity around the power grid. Now I know why.
Einstein was supposed to have said that a good teacher can explain very complicated subjects to an 8 year old. I'm a bit older than that... but sometimes I need things explained in simplistic terms. Engineering Mindset is superb at explaining concepts, then building on that and slowly increasing the depth of teaching. I, too listen to the advertising out of respect for the efforts put into these excellent tutorials.
Totally agree, It's the best engineering channel I've seen.
Brilliant explanation with the analogie to beer glass at 11:58 !
Thank you so much for sharing. You have answered some questions I have had for the last twenty years or so with the 124/240 difference.
A few others have said it, but you have reactive power wrong. It's not wasted as heat. Anything generating heat is consuming real power. Reactive power is temporarily stored and returned to the circuit by reactive elements like capacitors and inductors or other devices that exhibit some amount of capacitance or inductance. Reactive power does increase current flow and thereby increases losses due to parasitic resistive effects, such as the resistance of your wires or the eddy current and hysteresis losses in your core, so generally speaking, poor power factor will likely reduce the efficiency of the overall system. In one of your graphics you also labelled power factor as "Efficiency" and you also appeared to have used efficiency and power factor interchangeably after your beer glass analogy. Efficiency and power factor are not the same. While a power factor closer to unity is probably going to be better for efficiency, they are different quantities. Also, I'm not sure if this was just part of your analogy, but it sounded like you said that electricity customers pay for apparent power. This isn't true anywhere where I've lived - at least not as a residential customer. Residential customers in at least Australia and Canada pay for real power, so you generally don't get penalized for poor power factor as a residential customer. I'm pretty sure it's the same in the US. This is why your bill says how may kWh you consumed and not how many kVAh you consumed. I'm not sure whether other jurisdictions penalize small consumers for small power factor or not. Large industrial and commercial users may have different contracts with their utilities that charge them more or less based on their power factor.
Well written post. But even domestic/ residential customers help keep the power factor close to 1. The fan manufacturers, where I live, put a capacitor (capacitive load) in the circuit to oppose the inductive load of the fan motor and bring the fan's PF closer to 1. I don't know whether this is mandated by law or done voluntarily by the fan mfr to "help out" :)
I do know I only pay for reactive power at my residence (68 yo, male, retired), in South Asia.
Also I have had fights with my wife and 2 grown up D (if these 2 are around at that time) when they want to run some appliance off the solar panels when the main supply is absent. Try explaining that though the mixie motor may be rated "only" as 750 w, using it makes lights go dim and affects the TV/ computer! I have come to a stage where I am informed about the need to run the mixie, I shut off my computer and other non essential loads and give the green signal. Even then it comes as a surprise how dim the only light on becomes as the mixie motor takes both resistive and inductive loads from the panels.
I also want to praise the man who "invented" the concept of square root of (minus 1) as the ONLY way to deal with electrical circuits having inductive/ capacitive loads! Along with the wheel, 2 brilliant inventions.
Model train sets, door chimes, radio with tubes like RCA Radiola 60. pole pigs or distribution
xfrmrs on utility poles. Actaully there is a tansformer in your car, the ignition coil. It too has a
primary coil powered by the 6 or 12 volt battery, The points worked by a cam would energize the primary, when the points opened high voltage jumped the spark plug and in old car radios with tubes, there was a vibrator that alernatively powered a split primary or a center tap and the
vibrator powered one leg then the other and this made the hig voltage for the plates in the tubes.
Best tutorial ever I found about Transformers👌👌
Thank you very much for the video 👏.
The juice in between the complex formulas just relieves and re-energizes u to learn more
At 11:50 minor correction. KVAR is stored energy due do reactive components (capacitors or inductors). It is charged and discharged throughout the system and it is stored energy.
However the result is a reactive power creates higher current over your transmission line which result in greater losses. KVARs are sometimes desirable and are used for voltage control.
Aren't capacitators used to lower the VAR and increase the power factor due to a bad cos(phi) by the system only having spools? Then it makes the watt-less(reactive) power fluctuate from spool to capacitor without any energy consumption? Or have i completely messed something up in school?
@@rasmus1600 Yes, but it depends on which side of unity you are looking. Capacitors can be used to reduce inductive VArs; the same way inductors/reactors can be used to reduce capacative VArs. We generally see commercial use requiring motors that all have inductive power factors, for this reason you have probably seen capacitors used to reduce VArs (inductive) by adding capacative VARs. The cos(phi) as you mentioned is a phase lag/lead description of the VArs; and can give a physical description of what the motor induction effect has on the voltage/current waveforms, and likewise how the capacitor introduction can remedy this. It also shows how Real Power (V*I) is lost as cos(phi) increases. Draw the current and voltage graphs at unity (they align); then draw a power wave (V*I). Repeat the same process with some amount of cos(phi) offset on either voltage or current waveforms. Redraw the Real Power (V*I) graph. You will see that with some amount of phase offset, the RMS real power decreases.
At 11:50, I would like to suggest a correction. Reactive power is not wasted energy. It is actually wasted energy capacity (transformer in this case). Reactive power just comes back and forth from load and source. So, it is not wasted but only consumes conductor capacity which reduces conductor capacity available for active power.
I have a hard time understanding the subject of kVarh. The beer analogy doesn't explain it well in my opinion, not to mention the differences between lag and lead kVarh.
This is my understanding as well Keval Pandya. I used to work in our state's energy efficiency program and we specifically banned power factor correction devices because they don't save energy (but many mistakenly think they do). It's more about the capacity of the conductor not being used efficiently to deliver power if anything, but not energy efficiency.
@@samfisher874 As an discom engineer here in India, drawing reactive power is heavily discouraged by attracting penalty. Though I don't understand why power factor correcting device should be banned.
@@kvlpnd You're correct, bad power factor is heavily discouraged here in the US in California too. Customers are encouraged to use power factor correction devices if power factor is bad, and if they don't correct for bad power factor there will be a penalty on the bill. But separate from that, is the electric utility's energy efficiency program which gives customers money to purchase efficient LED lighting, premium efficiency motors, etc. Since bad power factor isn't wasted energy, power factor correction devices are not eligible for that money. Occasionally, a misleading/misinformed salesmen will incorrectly claim that a power correction device will save a customer lots of money by reducing energy (kWh or Joules), so it's specifically banned from receiving energy efficiency program money in California. (Hope I explained that well, it's 2:30 am here...)
@@SystemHacker23 Honestly I find it best to avoid analogies and just present a practical example. Motors don't go from totally inactive to totally active - capable of delivering torque to the output shaft - the exact moment electricity is applied. You have to get the core going with some amount of current to magnetize it before it is capable of doing useful work. This is the parasitic inductance. And at the end of each half cycle, the field collapses and this current is returned to the grid. The transmission lines don't know what this current is for, they just see a higher current on them going back and forth, which leads to higher I^2*R losses. Which is why power companies hate poor power factor, and they encourage you to place power factor correction capacitors close to the motor. That way, the capacitor provides this current to build the magnetic field, as well as receive it again when the field collapses, and the power company only delivers the current going into real output power from the shaft.
Consider the parasitic inductance as a shunt element in parallel with the resistive/real power drawn from the output shaft. As a shunt element, it reduces the impedance seen by the grid and causes an increase in apparent current draw, thus higher I^2*R losses on the transmission lines, which are in series (resistors) with this network. When the capacitor is placed also in parallel in the network, it will resonate with the parasitic inductance, and as parallel LC circuits present an open circuit at the terminals at resonance, the parallel LC tank circuit basically becomes an infinite impedance in parallel with the resistor representing shaft power = the circuit simply becomes the transmission lines in series with the real output power of the motor.
I love the way u explain and the diagrams speak for themself. Thanks for explanation
Thank you so much for the simple clear explanation. ❤❤❤
Sir I kindly request you to make a video related to current, voltage, charge, charge carriers, why voltage flows in the opposite direction to the direction of current, electrons and holes, conventional current etc. Lots of confusion in all these types of topics. So please help 🙏🙏🙏
The word "request" is very aggressive when asking for a favor, you could start by saying "Could you please"
Please see our other videos, we already covered all of this
There actually was a video about the ohm’s law and the basic physics behind electronics, it doesn’t go too deep into fields and other stuff tho, just what the engineer needs.
How the increasing in frequency helps to decreases the size of transformer🤔
Each AC cycle electric energy is converted to magnetic, and back again. The amount of magnetic energy that a transformer can 'store' is more or less linear in its mass. At a higher frequency, more of these cycles occur, hence the same transformer would transform more power, or the same power can be transferred by a smaller transformer. For further interest, study transformer equations and it Will be more clear.
@@PlayboyHZ 🤝
@@PlayboyHZ can you explain it simply
@@kks319 buckets of water, it takes alot more cups of water to fill a swimming pool but you can move cups alot faster than buckets in the same period of time
@@kks319 There is no simple explanayion. If you want to learn it to be able to use it someday, maybe in an isolated converter topology, you need to open a book and read about electromagnetics and transformers and inductors. CZcams videos only give you fundamental stuff, but thats barely enough to do something usefull.
I plan on sharing this video many many times to help explain electrical system to others! Thank You greatly for this video!
7:05 - I found the "push and pull" analogy very helpful - cheers!
For what? What are u working on?
There is a simple way to calculate current ,number of turns and the voltage according to the ratio:
Vp/Vs=Np/Ns=Is/Ip=constant ratio
Where:
Vp is primary voltage
Vs is secondary voltage
Np is primary number of turns and so on....
It's all same thing.
In india they use 3 phase transformers and the secondary side of the stepped end down version has 3 phases and 1 neutral in total 4 outputs. Each phase ranges between 215 volts to 240 volts and neautral being zero. Each home will either have 1 phase n neutral or 3 phase and neutral. The primary side has 3 phases . Each phase has around 11kilo volts.
Thank you, do you know we also have a Hindi channel? czcams.com/channels/g4k338hz9U8jnD5SXPO5jQ.html
We have the same system here in The Netherlands, do you have any video suggestions where i can see how this type of transformer work?
Amazing thorough demonstration
An excellent educational vid that answered several key questions I had about transformers.
I taught a class on power, generators, and motors. This was the class that most students had trouble with. Great job.
30+ years ago, I took that class. It was indeed challenging and, dare I say it versus nascent digital classes, boring. Yet here I am 30 years later in the large power transformer industry (Dutch OEM). Old school craftsmanship is a huge component to producing high quality power transformers.
It's been a long time since I learned about transformers (in much much greater detail) but I believe you got one thing very wrong!
Reactive power is NOT wasted energy! It's more like an useless energy that oscialates back and forth. It's still unwanted from the efficiency perspective since it takes capacity and causing some increased heat losses due to apparent current being higher than true/usefull current.
Power factor is also known as cos (phi), not to be confused with transformer (or whatever) efficency (n or eta)
PF and cosphi are two different things..
@@snowywhite9663 Wrong, they're the same thing if we assume a perfect sinusoidal wave. In reality there is allways some harmonic distorsion quantified with THD
Thanks you for the clear concise videos
Thank you very much this amazing video and I’m really struggling at school but your videos helps me to understand , I’m studying Electrical engineering thank you very much for your time Mr. Paul 🙏🏽🙌🏽
Nice explanation and presentation with practical examples, instruments and animations which will clarify the basic conceptions and understandings.
I am a Quality Inspector at a transformer manufactory so... I see them all the time! 😉 We manufacture Power Transformers (Core and Shell-type), Distribution Transformers, Power Casts and also Mobile Substations.
sir i am very fan of u. but sometimes i confused because it's too fast, but in the other hand i appreciated all ur videos sir.. thank u...
It has taken me months to get an answer to the question of why we use AC instead of DC. I finally found the answer in this video. Thank you.
I love this channel. I was confused about the transformer E and I . Thank you
I liked it. I found it helpful including the corresponding amperage increase/decrease in the formulas.
Remarkable..today I learnt about transfomers at age of 70 years. For many years I have been attached with mechanical electrical deptts. Chemical is my field. Your lecture is magical. Great great..I wish I could give you Gold Medal.....
Great to hear and thank you. If you know any friends it might help, please share the link with them
My job is making basic transformers for linear amplifiers but I didn’t really know all the facts about them. Thank you for this video.
thank you very much. the videos are so helpful for me.
Where have you been when I used to learn that staff... Great content. PLS, don't stop.
Thank you!
You do, a great job, to explain how is works!
Keep going!
@11:50 you mention the VAr is amounted as heat loss. For anyone reading it should be noted that the Power Factor; ratio between W/VA, is a representation of the phase angle (lagging/leading) of the voltage and current waveforms. A good way to visualise this is by drawing out 2 graphs of Voltage/Current waveforms.
1. Voltage and Current at unity, then draw Real Power on the same graph as (V*I)
2. Voltage and Current at 45deg lag or lead, then draw Real Power on the same graph as (V*I)
You should see that the multiple of the waves at offset, compared to unity shows a reduction in RMS Real Power, it's a good visual representation of the losses.
Videos like these are the reason why this channel is one of the best channels I've subscribed to
Best explanation hands down.
Excellent explanation of Transformer theory and calculations, very well presented video, thank you !
Love your videos. Thank you!
Very professional work, Thanks my friend ♥️♥️♥️♥️
I am a Service Supervisor for a company called Allmand. The last ten years I have worked with AC power. I did not come from an electrical background and learned everything from experience and electrical engineers. My company mfg portal light towers, heaters and generators from 8kw to 45 kw. Our light towers use 1250 watt metal halide lights, x 4 per unit. The ac generator produces 1 phase 120/240 to light breakers. Each breaker sends power to transformer that will increase power to each light (360-440 +/- 10%).
I 68, m, studied engineering many moons ago (seventies) and one memory is of challenging someone and finding out he was right. A fellow student went round the hostel asking us whether we believed we could get a shock from a 1.5 AA battery? I scoffed and said "of course not".
Promptly he took out a 1.5 AA battery and a transformer (230 v AC to 6 DC) removed from its case. He asked me to hold the 230 v side wires and held one 6v side wire firmly against the bottom of the battery. Then he rapidly flicked the other wire (on the 6 v side) against the top of the battery. I felt a distinct shock as a MOMENTARY current (at 230*1.5/6 = 57.5 v) was generated by the transformer.
Such incidents do more to teach you the basics of a discipline than hours of dry lectures by Professors!
Beer analogy was best one🔥🔥🔥
Really awesome! Thank you so much.
I work with elevators and even tho it's different , electricity is all the same and your videos help me understand so much more during my first year of apprenticeship thank you brother cheers from nyc
This is honestly a great great video 👏🏼👏🏼👏🏼👏🏼👏🏼
Hi! I used some transformers recently when I installed new pool lights in one of my properties. I installed 4 transformers, each converting 220 volts from the city to 12 volts. The pool lights only run on 12 volts and nothing more for safety reasons, you don’t want 220 volts anywhere near your pool! Thanks for the amazing content.
Well defined
Thanks Guys, Easy to grasp
I liked learning about these, there more than meets the eye.
Reactive power itself is not causing the loss. Its the current that reactive power carries that when pass through the wire, causes heat loss based on wire resistance. Example. If a transformer delivers 100W real power @ 10v, 10A to a load and load has a power factor of 0.5, the reactive power is 100VAR to the load. There is another 10A flowing through the transformer coils (coils carrying 20 amps total), not doing any work but since its flowing through the coils, the heat generated by this current is I^2xR so by getting the power factor as close to 1 as possible, we get the reactive power as close to zero so the current flowing in the coils is as close to 10A as possible, improving the transformer efficiency. A load that eats 200VA but delivers only 100W of work has a power factor of 0.5. The transformer will need to be rated 200VA to supply that load. Put some caps on load and bring the power factor close to 1 and the transformer required can be 110VA to power the same load.
Thanks a lot for explaining!
Great explanation! 💖👍🏻
vary useful and knowledgeable video thank you
Very informative video. Thank you so much!
My concentration is never missed,clear explanation 👍👍👍
Excellent video. Thanks.
Transformer grounding question?
I plan to place a step down transformer (110 to 16 V) in a metal box. The box will be grounded using the ground wire from the mains. Which of the following should be grounded to the box: primary winding, transformer core and/or secondary winding?
Paul could you do a video on co-gens? Details on how they provide electric and heat. CHP ( Combined Heat and Power ) Thanks! Love the videos!
Liked your analogy of beer and power