What is Back EMF in the field of Electricity?
Counter-electromotive force (counter EMF, CEMF), also known as back electromotive force (back EMF), is the electromotive force (voltage) that opposes the change in current which induced it. CEMF is the EMF caused by magnetic induction.
In addition, in Ether physics talking about electricity, Back EMF is also understood as the back electromagnetic field.
Thus, Back EMF is understood as:
- Back EMF = back electromotive force
- Back EMF = back electromagnetic field
This is possible: After Ether physics was haphazardly rejected by Einstein, the Michelson-Morley experiment famously failing to confirm the existence of Ether, the science of electricity in physics was established. modified as it is today. And, Back EMF is supposed to be back electromagnetic field, but is interpreted as back electromotive force.
Free energy experts generally understand that Back EMF = back electromagnetic field. Because it has a broader meaning and covers "back electromotive force".
Back EMF by Wikipedia: The term back electromotive force is also commonly used to refer to the voltage that occurs in electric motors where there is relative motion between the armature and the magnetic field produced by the motor's field coils or permanent magnet field, thus also acting as a generator while running as a motor. This effect is not due to the motor's inductance, which generates a voltage in opposition to a changing current via Faraday's law, but a separate phenomenon. That is, the back-EMF is also due to inductance and Faraday's law, but occurs even when the motor current is not changing, and arises from the geometric considerations of an armature spinning in a magnetic field.
This voltage is in series with and opposes the original applied voltage and is called "back-electromotive force" (by Lenz's law). With a lower overall voltage across the motor's internal resistance as the motor turns faster, the current flowing into the motor decreases. One practical application of this phenomenon is to indirectly measure motor speed and position, as the back-EMF is proportional to the rotational speed of the armature
Doubts - - questions for you:
- Lenz and other scientists once claimed to have found the Law of the Universe?
- Stephen Hawking thinks the Entropy of the universe is increasing (The expansion of the universe), And will it become a law?
- After Nikola Tesla and Einstein died, how many new laws of physics were born?
The problem of Back EMF in generators and Lenz's force is an invariant law or not |
Maybe: The emergence and circulation of physical laws in science is like the operation of paper money? You don't know who behind is using paper money to control humanity. So is the law of physics, you don't know who thought it was a law.
Faraday's law is a true description of reality, but Lenz's law may only describe one aspect of Faraday. Because it is clear that Lenz's law is founded on the observation of some particular phenomenon. Therefore, it is possible that Lenz's law cannot be applied to all cases.
So, How to break Lenz's law in generators and transformers: Tesla Bifilar Coil Magnet Generator
Types of Back EMF
1. The most primitive Back EMF: a square pulse acting on the coil
The most primitive Back EMF phenomenon in science is the one that Faraday discovered in 1831:
Faraday's law of induction (briefly, Faraday's law) is a basic law of electromagnetism predicting how a magnetic field will interact with an electric circuit to produce an electromotive force (emf)—a phenomenon known as electromagnetic induction. It is the fundamental operating principle of transformers, inductors, and many types of electrical motors, generators and solenoids.
Electromagnetic induction was discovered independently by Michael Faraday in 1831 and Joseph Henry in 1832.[5] Faraday was the first to publish the results of his experiments.[6][7] In Faraday's first experimental demonstration of electromagnetic induction (August 29, 1831),[8] he wrapped two wires around opposite sides of an iron ring (torus) (an arrangement similar to a modern toroidal transformer). Based on his assessment of recently discovered properties of electromagnets, he expected that when current started to flow in one wire, a sort of wave would travel through the ring and cause some electrical effect on the opposite side. He plugged one wire into a galvanometer, and watched it as he connected the other wire to a battery. Indeed, he saw a transient current (which he called a "wave of electricity") when he connected the wire to the battery, and another when he disconnected it.[9]: 182–183 This induction was due to the change in magnetic flux that occurred when the battery was connected and disconnected.[4] Within two months, Faraday had found several other manifestations of electromagnetic induction. For example, he saw transient currents when he quickly slid a bar magnet in and out of a coil of wires, and he generated a steady (DC) current by rotating a copper disk near the bar magnet with a sliding electrical lead ("Faraday's disk").However, this phenomenon is extended by the following popular experiment:
When a cyclic voltage pulse, with a voltage graph in the form of a square, and it is applied to the coil, the coil itself creates resistance against the voltage applied to it. See the voltage graph below:
Lv is the voltage at the coil after applying the voltage in the form of a square pulse. Lv is the result of the voltage synthesis from the initial pulse and the back EMF's reactance. |
2. Back EMF generated by generator and induction motor
Faraday's law of electromagnetic induction states: Initially, when the magnetic flux changes, with the magnetic field line cutting the coil (perpendicular or greater than 0 degrees) current will be generated. But the coil itself generates an electromotive force, to create a magnetic field that opposes the direction of the original magnetic induction. Scientist Lenz expanded and analyzed this phenomenon in detail, and science assigned a law named after him. Lenz himself did not claim to have discovered the law, but the creator of the 20th century science program arranged it to serve the later technological monopoly.
With induction motor, there are two types, DC and AC motor, when the wire frame carries current on the rotor, it will move due to the changing magnetic field. However, when operating, the Rotor generates another magnetic field that affects the windings (with AC induction motors). According to the law of electromagnetic induction, there must be an induced electromotive force on the windings on the stator. But the problem is that the emf is opposite to the initial emf applied to the coil to make the rotor rotate, and that is the Back EMF at the AC induction motor. With a DC induction motor, the Back EMF happens similarly, but the emf will be on the wire frame in the rotor, not on the stator like an AC motor does.
It is the Back EMF in the induction motor that makes the rotational speed limitless and stable. Because according to the formula of Newton's 2nd law, with a constant net force (because the current in the magnetic field produces the force), the acceleration a = F/m, where m is the mass. That is, the Rotor's rotational speed can set the speed higher than light after only a while.
3. Back EMF generated by Transformer
With transformers, when the primary winding is applied AC voltage, the steel core will have a flux that varies with AC current. When the magnetic flux passes through the steel core of the transformer, to the secondary winding, the voltage will be increased or decreased. That is the process of generating new voltage.
The new voltage generated on the transformer is also not outside Faraday's law of electromagnetic induction. That is, it must have an electromotive force that generates the flux inside the steel core to counteract the flux that generates the new voltage.
In fact, inside the transformer core, there is a reverse electromagnetic field, called Back EMF.
The red line is "back electromagnetic field" that goes in the opposite direction to the blue line, and it's called Back EMF. |
4/ Back EMF generated by circuit breaker in tension Ether
In electronic circuits that exploit radiant energy: When the voltage reaches 0V, or when the circuit is cut with a semiconductor, it will generate Back EMF with a higher voltage. |
Very interesting (and dangerous) phenomena manifest themselves when the current path is interrupted, thereby causing infinite resistance to appear. In this case resistance is best represented by its inverse, conductance. The conductance is then zero. Because the current vanished instantly the field collapses at a velocity approaching that of light. As EMF is directly related to velocity of flux, i tends towards infinity. Very powerful effects are produced because the field is attempting to maintain current by producing whatever EMF required. If a considerable amount of energy exists, say several kilowatt hours* (250 KWH for lightning stroke), the ensuing discharge can produce most profound effects and can completely destroy inadequately protected apparatus.[* The energy utilized by an average household in the course of one day.] (Source)
Mining Back EMF generates "Free Energy"
1. Generate radiant energy
Just above, Back EMF is generated due to electrical transients, by switching the circuit. Electric Transitions by Tesla: Throwing the Knife Switch - The Blue Spike Phenomena
Normally, most people assume that radiant energy comes from the sun, or from the deep space of the universe. However, radiant energy is also generated from an electronic circuit based on the mechanism of Pulse Technology.
If you are interested in how to generate radiant energy and convert it into electricity for home use, I would like to recommend how to build the system:
- Radiant energy in static form, from the sky: How to Build Tesla's Radiant Energy Receiver
- Radiant energy in the form of an impulse, based on an electronic circuit: Radiant Energy with Bifilar coil - Impulse Technology
2. Free Energy Transformer
3. Exploit The AC generator's Back EMF to feed back to the induction motor
Extract back EMF to power induction motors to create self-powered generators - basic type |
Exploit The AC generator's Back EMF to feed back to the induction motor - premium version |
Revealed At Last: Ancient Invention Generates Energy-On-Demand
✔ Nikola Tesla’s method of magnifying electric power by neutralizing the magnetic counter-forces in an electric generator
Generates Energy-On-Demand: Easy Power Plan Will Change Our World Forever
✔ Combination of induction motor and alternator
✔ Combine generators with induction motors - self-powered generators with rotary motion
✔ Various methods of generating high power immobile generators
✔ Or maybe called Overunity for the system. Mother Nature doesn't care about people calling or naming phenomena. Overunity or Free Energy, or Zero Point Energy (ZPE) are just a few different words
Paul Babcock advised removing the iron cores. Makes it air coils instead. Reduces Lenz. He mentioned replacing bipolar switch with power mosfets or IGBT, and replacing neon bulb with tvs diodes. We'll see. Regardless thank you for the awesome info, this is impressive 👏
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