What is Transformers: Definition and 267 Discussions

Transformers is a media franchise produced by American toy company Hasbro and Japanese toy company Takara Tomy. It follows the battles of sentient, living autonomous robots, often the Autobots and the Decepticons, who can transform into other forms, such as vehicles and animals. The franchise encompasses toys, animation, comic books, video games and films. As of 2011, it generated more than ¥2 trillion ($25 billion) in revenue, making it one of the highest-grossing media franchises of all time.
The franchise began in 1984 with the Transformers toy line, comprising transforming mecha toys from Takara's Diaclone and Microman toylines rebranded for Western markets. The term "Generation 1" covers both the animated television series The Transformers and the comic book series of the same name, which are further divided into Japanese, British and Canadian spin-offs, respectively. Sequels followed, such as the Generation 2 comic book and Beast Wars TV series, which became its own mini-universe. Generation 1 characters underwent two reboots with Dreamwave in 2001 and IDW Publishing in 2005, with a third starting in 2019. There have been other incarnations of the story based on different toy lines during and after the 20th century. The first was the Robots in Disguise series, followed by three shows (Armada, Energon, and Cybertron) that constitute a single universe called the "Unicron Trilogy".
A live-action film series started in 2007, again distinct from previous incarnations, while the Transformers: Animated series merged concepts from the G1 continuity, the 2007 live-action film and the "Unicron Trilogy". For most of the 2010s, in an attempt to mitigate the wave of reboots, the "Aligned" continuity was established. In 2018, Transformers: Cyberverse debuted, once again, distinct from the previous incarnations.
Although initially a separate and competing franchise started in 1983, Tonka's Gobots became the intellectual property of Hasbro after their buyout of Tonka in 1991. Subsequently, the universe depicted in the animated series Challenge of the GoBots and follow-up film GoBots: Battle of the Rock Lords was retroactively established as an alternate universe within the Transformers robot superhero storyline.

View More On Wikipedia.org
  1. S

    Step Up Transformer: Current AND Voltage Increased?

    Please help! I have recently completed an experiment on transformers, using a step up transformer. I am aware of all the theory that shows that in a step up transformer, the induced voltage should increase and the induced current should decrease. However, in my experiment, my hypothesis is not...
  2. Chezz42

    In my experiment on transformers, the data showed

    So I did an experiment a this week on the relationship between two tightly wrapped coils with same length and number of coils in a transformer. This was in a compete circuit using AC currents. I measured the Voltage, keeping the currents the same. One experiment had an iron core between the two...
  3. V

    What happens to Electricity which is supplied to distribution transformers that have no load?

    I Have a Dumb Question. If Electricity Supplied from Substation to Feeder to Transformer and Under Transformer If There Are Many Consumers. Assuming That many Consumers Went on for a Holiday, Does Utility Still Pay for the Electricity to the Generation company for the Electricity they Supplied...
  4. B

    3 phase power systems: per unit with transformers

    Hey, I'm currently working a problem that looks like this: There's more to this problem, but I'm sure I can solve the rest of it, there are just things I'm uncertain about. Actually, it's only one thing I'm uncertain about. I'm looking through my notes, and when converting the voltage...
  5. Aristotle

    Transformers and Power: How Can Impedance Matching Improve Power Transfer?

    Homework Statement Homework Equations Z_Impedance = Z_Load / n^2The Attempt at a Solution Hello everyone, I understand that in order to provide maximum power to load, the load resistance (R_L) has to match the source resistance R_S. My main confusion is from the question itself on what my...
  6. J

    How do eddy currents in transformers affect power loss?

    Hi pf, Could someone please explain to me why the back emf on the primary caused by eddy currents does not result in power loss. From what I have been reading about transformers eddy currents have two effects: 1) Producing heat (P=I^2R) 2) Producing a flux which opposes the primary flux I am...
  7. T

    Do harmonics cause stray flux losses in transformers?

    I read here: http://static.schneider-electric.us/docs/Motor%20Control/AC%20Drives/8803PD9402.pdf that harmonics cause stray flux losses in transformers, how is this so? Thanks
  8. S

    Chemical PCP found in older Electrical Transformers

    I worked for the Public Utilities company last summer, and we were tasked with taking inventory around the entire city, of all the transformers. We wrote down as much info as we could about the transformers, including Serial Number and whether or not it contained PCP's. From what I understood...
  9. AsrielDreemurr

    Why does Ohm's law not apply to transformers?

    How can a transformer increase the voltage yet lower the current? Are the equations P=VI and V=RI contradictory? Thanks in advance and sorry if I made any english mistakes.
  10. Y

    Generate electrical energy from vibrating transformers

    Hey guys, how are you? I just have an idea but can't figure it out how to solve it. Is it possible to generate electrical energy from a (high power) transformer vibration using piezoelectrics?
  11. L

    Transformers: high voltage, low current AND low resistance?

    From my understanding, transformers allow electricity to travel long distances with minimal energy loss because they initially use a step-up transformer which reduces the current (which reduces the heat loss and hence energy loss). However, I do not understand how a step-up transformer manages...
  12. ernd59

    Transformers and Electric power Ltspice

    Hi, i was looking for the Energy conversion efficiency of my circuit in Ltspice, but i find out that my Transformers is giving me strange power values i mean with K = 1 the P1 should be equel to P2 but in my case P2 is is way too small , i get equality 90% only if get rid of the Flyback...
  13. S

    Why do transformers use AC currents in the primary coil?

    Hello. If we assume an ideal transformer, why do we use a.c current in a transformer? I've searched and answers are that we need a changing electric current to produce a change in magnetic flux, using Ampere's law. However, Faraday's law states that a voltage produced a changing magnetic flux...
  14. ElegantSir

    Direction of Current in a Coil with Magnetism: Double Checking

    Homework Statement The problem is in the thumbnail Homework Equations None The Attempt at a Solution I just wanted to double check my answer on this: Left side of the coil is North Right side of the coil is South The arrows that indicate the direction of the current should be facing up in...
  15. D

    Megger Testing on Distribution Transformers

    In Megger testing distribution transformers, how much importance is there in including the LV/HV bushings in the test. If you disconnect and have high readings independant of the bushing, and then put the bushings back into the circuit and the readings fall dramatically, what is that saying...
  16. A

    Transformers Fans: G1 to Present Day

    And I mean from the G1 days to present times. I grew up on G1, liked the Beast Wars. Love TF Prime and the Cybertron series games. Plus the new IDW comics are great.
  17. Y

    Electrical Engineering - Transformers

    Homework Statement Please see the picture attached. Homework EquationsThe Attempt at a Solution I was able to solve part A correctly, at least I believe I was able to do so. I'm struggling with part (b) however. I'm not sure were to start on this. My test that has this problem doesn't have...
  18. K

    Types of transformers used in LCD backlights

    How common are piezoelectric transformers in computer LCDs?
  19. I

    Transformers and iron cores and frequency

    As far as i understand the thing that matter in all of the process of mutual inductance is the rate of change of the current in the primary coil $$\frac{dI}{dt}$$ butting soft iron core will increase the density of the magnetic field inside the primary coil, but how this will effect...
  20. A

    Tapped Transformer With a Capacitor

    The question is the following: a) Determine all load voltages and currents b) Determine the resistance reflected into the primary. Answer a) R(l): 35V, 2.91A, X(cl): 15V, 1.5 A The answer to part (b) is apparently 34.5 Ohms. How did they arrive at these answers? I am not sure...
  21. J

    Commercial transformers for variable frequency & voltage

    I am looking to step up the voltage of a 3 phase PM generator which has variable AC output of 200 - 400 Vl-l, and 15 - 30Hz. I am looking for a step up ratio between 1:1.5 and 1:2, and need this transformer to be a commercial device. What i have been finding is that most commercial...
  22. T

    What Happens When a Transformer Core Reaches Saturation?

    Over the years I've learned a lot about TXs etc. But I'm a bit rusty. Any thoughts on general reminders about core saturation. I know there are huge issues, but the specifics I can't remember that well. I vaguely remember hearing something like when there is a DC component on a transformer the...
  23. kelvin490

    How to show laminations minimizes eddy current?

    In transformer, lamination is an effective method to minimize eddy current and thus energy loss. I just wonder how can we show that the energy loss due to eddy current in those laminates is added up to be less than that without lamination (suppose the total cross sectional areas are the same)?
  24. ranju

    Optimizing Power with Parallel Transformers

    Homework Statement A load of 1000 kVA at 0.866 p.f. lagging is supplied by two 3 phase transformers of 800 kVA capacity operating in parallel. Ratio of transformation is same : 6600/400 V, delta/ star. If the equivalent impedances referred to secondary are (0.005 + j.015) ohm and (0.012 + j...
  25. ErnieChicken

    Transformers Under Load and No Load

    Homework Statement I have a step down transformer (6 : 1) Copper Loss of 110W at full Load Primary Coil: I = 3.33A R = 0.35 Ohms Power Loss = 4W Secondary Coil: I = 20A R = 0.265 Power Loss = 106W Power Drawn Over the Primary = 75W 9kVA Transformer Homework Equations The Equations i have...
  26. X

    Transformers Current and Voltage

    Homework Statement A transformer has a turns ratio of 5 : 1. It is connected to a 230 V supply and an output (secondary) current of 2.7 A is measured. If the transformer is 90% efficient, calculate: Secondary voltage Input (primary) current [/B]Homework Equations...
  27. arnab ghosh

    Why Grounding Transformers Used w/Delta Sec. Transformer?

    Just curious about why grounding transformers are used with a delta secondary . What would happen if I connect a phase to ground load to the secondary of a star delta transformer without adding a grounding transformer?
  28. A

    Transformer with open iron core?

    Hello everyone, I'm not sure if the title makes sense, but I'll try to explain it a bit better here. So, if we have a transformer with an open iron core (U shaped iron core, with coils wrapped around each side, same number of coils, same thickness), why is the electromagnetically induced emf in...
  29. S

    Is the Transformer in My Adapter Damaged? A Question for Physics Assignment

    Hi guys, I am rather new here and would like to pose a question about transformers. As physics assignment I am supposed to make a model of an AC transformer, for which I grabbed an AC/AC step down adapter (something like these here...
  30. P

    Tap Changing (ULTC) Transformers and Reactive Power Control

    So I am trying to understand how a ULTC operates in the Reactive Power Control mode (it adjusts taps to control the reactive power in a line). What equation is governing it's operation, and what variables does it adjust in order to increase/decrease reactive flow? Is it just the simple reactive...
  31. F

    How do transformers work and how do toroidal transformers differ?

    I have a few questions regarding general transformer workings, and a couple of questions regarding toroidal transformers as well. For ease of reading I've put them in bullet points: 1. The magnetic flux induced by the primary winding creates the voltage (and hence current) across the secondary...
  32. P

    Do Isolation Transformers Compromise the Earth Wiring Protection of a Circuit?

    hello! isolation transformers are supposedly protecting from electric shock without them, the voltage source is connected to a circuit and the circuit is connected to Earth via an earthing wire. if you touch the live circuit, a closed circuit will be formed that will give you electric shock...
  33. ranju

    Why Do We Use Rated KVA Values in Transformer Impedance Calculations?

    For the transformers in parallel.. there's a relation Z1/Z2 = S2 (rated)/S1(rated) where Z1 & Z2 are the impedences while S1 & S2 are KVA ratings of the two transformers. Now why we are taking rated KVA values..?? I mean if Z1/Z2 < S2(rated) / S1(rated)... we increase S1 to satisfy the relation...
  34. M

    Engineering Using the Short Circuit Test on a Single Phase Transformer?

    Homework Statement A short circuit test is performed on a small single phase transformer. The results are: Primary Voltage 5V, 60Hz Primary Current 2A Secondary Current 10A Primary Power 8W a) Making suitable approximations deduce the primary/secondary turns ratio (single number)? b) Making...
  35. M

    Ideal Transformers and finding the steady state current?

    Homework Statement In the circuit shown the 120V, 60Hz source supplies the ideal load shown through an ideal 2:1 transformer. What steady state current would you expect to read on the rms ammeter shown (please find the picture attached)? Homework Equations Zeq = (1/Z1+ 1/Z2)^-1 Z1 =...
  36. 2

    Magnetic fields in transformers and back emf?

    i am having some trouble with understanding the magnetic fields inside transformers and how they relate to back emf. In particular, I am considering the two cases of current passing through the primary coil but not the secondary coil, and then with the secondary coil as part of a complete...
  37. A

    Can transformers alter the resistance of wires in a circuit?

    Do transformers change the resistance of the wires inside then when turned on? The reason I ask is because I know that transformers can be used to change the ratios between voltage a current while keeping the power sent in and power sent out roughly equal, but since V=IR this must mean that the...
  38. ranju

    Power factor for transformers

    I have read that transformers operate on high power factor but I cannot get what is the reason behind it..?? I mean..what if we are having a low power factor..how is that going to affect the working of transformer??
  39. K

    Transformer help please -- AC Mains transformers of different input voltages

    Hiya Does anyone know if there's any safety or performance issues with going about the input voltage of a transformer? The spec on maplin says on just about every step down transformer that the input is (x)v-230v. As I live in the uk, mains voltages are 240v a.c. Not sure about what to do
  40. J

    Delta Transformers on Wye Distribution System

    Hopefully this has not already been asked. It would be hard to do a forum search with the right words to find it if it has been already. I am wondering if it is ever possible or common place to generate power in a Wye generation scheme and then connect it directly to a transformer with a...
  41. A

    Understanding Generators: Exploring Induction and Alternating Current

    So I was just reading on generators. The basics that I've understood is that it works by inducing a current through motion of a coil on a magnetic field. So what I didn't understand was that it produces an alternate current through full 360` rotation. In a half cycle, it induces a current in one...
  42. T

    Voltage transformers and magnetic field leakage

    I’m looking to purchase a toroidal AUSTRALIA-to-US stepdown voltage transformer, and have narrowed my choice down to two models, one permitting a maximum rate of energy consumption of 100 Watts, and the other permitting a maximum rate of energy consumption of 250 Watts. Both of these maximum...
  43. BeautifulLight

    What's that yellow stuff around transformers?

    I need to find something that I can wrap around the coil of a bottle radio (image below) to keep the magnet wire from unwinding. Lacquer is messy and time-consuming. I'm hoping there is a translucent tape that I can use? Someone suggested using Kapton tape, but it's very expensive and a bit...
  44. P

    Questions about Voltage Regulators and Current Transformers

    I am working on my final year design project, and I will be using magnetic power harvesting from a power line to supply a microcontroller. I am thinking of using wires around an iron core, or just purchasing a CT for harvesting energy. If it is the CT, I am a bit confused on its ratings. If the...
  45. A

    Single phase and three phase transformers

    please suggest me simple and pecise notes or book for the above that can provide full concept in a very short span of time perhaps this is not the homework.
  46. M

    Transformers Confusion: P=IV, V=IR Explained

    I know that in a step down transformer the voltage is reduced and therefore current has to increase because P=IV. But potential difference is what drives the current so when the voltage decreases it seems strange for the current not to decrease too. Another why of putting it is if both coils...
  47. E

    Can Transformers Create a 90 Degree Phase Shift?

    I am learning about transformers and from everything I've read I can see how its possible to create a 180 degree phase shift by winding the primary and the secondary in opposite directions. What I wanted to know was if it's possible to make a 90 degree phase shift with a transformer.
  48. F

    Transformers to step up voltage?

    I was shown how to use two transformers to step up voltage and I am curious as to how it works. The low side of the transformers were connected to 120v and the high side was connected to a load at 240v. What amazed me was that the low sides connected in series could be connected to the 120v...
  49. T

    How do transformers and Ohm's law contradict each other in basic circuits?

    We all know Ohm's law and power conservation, but in a basic transformer, they seem to be contradictory. For example, say we have a 50v source running through a 10Ω wire, then the amperage to the transformer should be 5 A and would come out to 250 watts. Then say the transformer steps the...
  50. adjacent

    Transformers and inverse square law

    Homework Statement This was in my test paper today: A transformer is cut into half so that one half contains the primary coil and the other half contains the secondary coil. They are moved 30cm apart. Explain why the transformer would not work The Attempt at a Solution My answer: The magnetic...
Back
Top