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Free Energy from Inverter with Amazing Overunity

Free Energy from Inverter with Amazing Overunity

While experimenting with a 300V DC to 220V AC inverter circuit, I noticed a strange overunity phenomenon which appeared to be like the generation of free energy from the inverter transformer.

Recently while experimenting with a high voltage converter circuit, I was quite astonished to see a strange overunity kind of occurrence wherein the inverter transformer output seemed to be generating more power than it was being supplied.

The entire set up can be witnessed in the following diagram:

Block Diagram


Connection Diagram


free energy generator using an inverter


Is this Free Energy from an Inverter

In the above set up we can see a very common center tap inverter topology, wherein the transformer center tap is connected with the positive input from the supply, while the two outer ends are connected with the drains of switching mosfets.

The gates of the mosfets are switched with an SPWM 50 Hz oscillating frequency from a 12V DC oscillator stage. The oscillator stage is powered from a external 12V DC battery.

The battery here, is only associated with the oscillator stage, and has nothing to do with the transformer power stage.

The actual power to the inverter is introduced from the mains 220V socket after appropriately rectifying it through a bridge rectifier network using 1N5408 diodes.

To ensure that in case of an accidental mistake in the connections nothing goes into smokes, I decided to connect a 200 watt incandescent bulb in series with the input mains supply during the initial testing of the circuit. This bulb can be seen as Lamp#1 attached in series with the input 220V supply.

After this, I switched ON the 220V mains power for initializing the inverter operations.

I was happy to see that the inverter started working without any issues. However since there was no load connected with the transformer secondary, I was still not sure about the results and regarding the actual performance of the inverer design.

Therefore to test this I connected another 200 watt bulb having exactly similar specifications to the Lamp#1 with the secondary of the transformer.

Witnessing the Overunity

I switched on the mains once again, and was quite amazed to see that the Lamp#2 connected at the transformer secondary switched ON and illuminated with a relatively higher brightness compared to the Lamp#1, which hardly showed any illumination on it.

Lamp#2 was glowing with around 40 watt illumination while the Lamp#1 was barely glowing at around 5 watt illumination.

Since all the power to the transformer was being delivered through Lamp#1, the power sharing should have been perfectly equal across the two bulbs, meaning the illumination on both the bulbs should have been equal, but here the conditions did not seem to be following this rule.

This seemed baffling to me, and I am still struggling to find the answer regarding how the bulb connected with the inverter could produce 6 to 8 times more illumination than the series bulb which appeared to be supplying much less power to the inverter?

From the situation it seems free energy is being created from the inverter with an overunity of  400 to 800%, something that certainly deserves a deeper investigation.

Without the Inverter Circuit, Power Distribution becomes Equal

The following video proves that normally resistive loads having equal ratings will share and divide equal power across them. The video shows how the two 200 watt bulbs produced identical illumination (100 watt each) without the inverter circuit involved.

Second Video Confirmation

I tried the experiment one more time, just to confirm whether the results were consistent or not, and fortunately the experiment yet again proved the above explained overunity occurrence, leaving no doubts regarding the perceived outcomes. Here's the video for you all to watch.


About the Author

I am an electronic engineer (dipIETE ), hobbyist, inventor, schematic/PCB designer, manufacturer. I am also the founder of the website: https://www.homemade-circuits.com/, where I love sharing my innovative circuit ideas and tutorials. If you have any circuit related query, you may interact through comments, I'll be most happy to help!

54 thoughts on “Free Energy from Inverter with Amazing Overunity”

  1. basing the schematic diagram, the 220 Vac is just an additional voltage which is converted to Dc voltage by bridge rectifier. The rectified dc must be lower because of the bulb in series. The power dissipated by lamp 1 is not related to the power dissipated by lamp 2 , therefore must not be equal . As the inverter is oscillating to drive the primary winding of the transformer , the rectified DC is just added to the inverter circuit and since the inverter has a DC resistance so it will complete the loop of the added DC supply .

    • power dissipated by lamp 1 is not related to the power dissipated by lamp 2? so from where the lamp2 is getting the extra power (illumination)?

  2. Hello, it is already January 29, 2019, and as it was now, it is really overunit what you discovered, detail me because it is a good hope for the planet

  3. Dear Sir,
    I am living in Delhi, Is possible you build for me Energy from Inverter with Amazing Overunity kit and send to me and i pay you money for this kit

    because i tried but this not working ,so i decided better your build for me and send to delhi and i pay money to you .

    please let me know how much i need to pay you as well as how long it will take to send me

    • Thank you for your interest Sanjay, actually the experiment is still not fully confirmed, therefore it may not be recommended to sell this idea yet. Once I am fully convinced then I may definitely start providing it to the interested users.

  4. Sub_Free Energy from Inverter with Amazing Overunity
    Dear Sir,
    I made circuit but my builb 1 only bright (series connected to main with bridge) and buld 2 very dim (secondary side of transformer )

    I use Square wave ,120HZ , Please help to work like yours

    my mail id sanjaysingh201@gmail.com


    • Hi Sanjay, I am myself not sure regarding the exact reason of the mentioned phenomenon, so I won’t be able to suggest much. However I may try the experiment once again , just to check whether or not the experiment is able to sustain the performance over and over again.

      • Swagatam Ji,
        Kese ho?
        SMPS based power supply will also show the same effect.

        Take mobile charger or any smps power supply, connect a bulb1 in series into charger input supply. Connect another bulb2 at output . You will see the
        Bulb2 is brighter then bulb1.

  5. Hello Swag,

    Thank for the initial response on YT. I am designing a replica circuit and am have some observations:

    1) This inverter is neither a step up or step down but a conversion from AC – DC – AC again, which is done via SPWM.

    2) This process removes the reactive component after the DC stage, where the signal is a series of modulated pulses within a 10 ms square wave. The signal of which produces a sinewave through the transformer. Is this correct?

    My questions are :

    1) At what frequency did you choose to phase correct the pwm (in kHZ)? I am wondering if this effect is happening in the higher frequency range ( 100-200kHZ) and you stumbled on a behaviour that may be linked to the transformer rated at only 50hz? Could this be an effect of bEMF generated from phase correction? Could the rest of the in-series AC line simply not ‘see’ much of a load (like a dimmer circuit) and why the bulb 1 is barely lit?

    Anyway, answers to frequency of the modulated pulses making up the 50 Hz squarewave and the type of RS transformer would be greatly appreciated. I think this is a very important effect you have found 🙂

    Kind regards,


    • Thank you Tivon,

      I accidentally came across this phenomenon while trying to test a 300V DC to 600V AC converter concept. Since I did not have an access to a 300V DC I decided to use my AC mains for this, and just to be on the safer side I made sure to have a series bulb, in case something went wrong.

      Frankly, I am not sure what may be going on inside the design and how the inverter bulb is able to attain more brightness than the input series bulb.

      For the oscillator I used an ordinary IC 555 astable, set to generate a 1kHz frequency. This frequency is supplied to a couple of IC 4017 cascaded dividers, which divide the frequency into two sets of SPWMs at around 55Hz base frequency, which are fed to the respective mosfets and transfromer center tapped winding.

      The complete circuit diagram can be found here: https://www.homemade-circuits.com/1500-watt-pwm-sinewave-inverter-circuit/

      I am planning to repeat the experiment once again, because I realized that earlier one of the channels of the inverer was probably not working, otherwise we could have seen even more brightness on the bulb#2, I will try it soon and present the results here.

      • I did the experiment yet again and glad to say that the result was pretty much the same. Surprisingly this time the series bulb was even dimmer and its illumination was hardly noticeable. I’ll upload the video soon.

        This time I interchanged two 200 watt bulbs just to make sure that there was no hidden issue with the bulbs and they were exactly similarly rated, and I couldn’t find any issues with the bulb behavior, both ways the results were identical.

        • Would it possible to connect a watt meter from the wall to see if there is a deviation in the power draw? Also wondering if a phase shift occurred at bulb 1 (reactive)? You could do the by-pass wire again and see if there is a change in the watt meter reading?

          • yes that would be interesting, however I do not have a wattmeter at the moment, if I buy sometime in future I’d surely check it. I am not sure how a phase shift could help in an overunity to develop, but it may be related to the flyback working conditions

  6. Respected Sir,

    This is strange!!!!!
    Looks like the LED connected with the inverter terminals is in series with the battery, Right? In such a case, firstly the inverter will not operate at all, and

    How is it that you’re applying a direct rectified 325V DC between the common ‘source’ pins tied of both mosfets and the center tap of the transformer?

    Wont applying direct mains at these two points on the inverter section harm the inverter instantly?

    Again, if noticed in the video clearly, both lamps don’t have a steady glow on them, which means that the mains rectified DC is pulsating, passing into the transformer and this directly has an effect on both lamps flickering.

    Can pulsating DC be passed into the rated transformer safely? I’m still confused on what’s happening in the system you prepared.

    Let me investigate more clearly…………

    • Hi Sherwin, thank you for your interest. It seems your questions are not related to free energy, rather regarding the use of 220V as the input and pulsating current.

      In the experiment I used a 220-0-220V /110V transformer, and 1000V rated mosfets, and that’s why I could safely apply 220V DC as the input since the components were appropriately rated.

      All inverters work by applying pulsating current to the transformer, that’s how inverters are supposed to work, therefore in this experiment too the same principle has been implemented.

      I hope it solved your questions, let me know if you have anymore doubts

  7. Yes it must be.

    I thing voltage across bulb 1 is less , compared to voltage across bulb 2 .

    Have you checked
    1. Voltage at bulb 1.
    2. voltage at transformer input.
    3. voltage at bulb 2

    Regards Devendar Jakhar

    • Can you produce two different light levels on two similarly rated bulbs in series?

      Since it is a frequency based circuit voltage/current measurements can be confusing, here illumination itself is enough proof for the mysterious condition

      If bulb#2 would be dim and bulb#1 would be bright then it would be useless, because it would mean that the inverter is consuming more power.

      But here bulb#1 which is supplying all the power is dim and bulb#2 is bright, that’s the mystery??

  8. Now I understood you point.

    You are asking that ‘ how it is possible that a transformer and a bulb can consume different watts. while both are connected in series.

    it is possible in this type of setup .

    I will try to explain with some practical value of watt , volt , amp, duty cycle, frequency, rectified DC , kva , etc.

    Good night!

    • No I am not saying that, I am saying how can two bulbs having identical rating consume different power when they are in series.

      If suppose 40 watt is being consumed by bulb#2, this 40 watt must pass through bulb#1, then both must share equal illumination.

  9. Swagatam Ji,

    I think ‘RL circuit in series’ will explain all the doubts about free energy of this circuit.

    actually transformer is consuming more power than bulb1 , that is why we are getting more power at bulb 2.

    bulb 1 has less volts compared to transformer input but same current.

    total consumed power by bulb1, oscillator and transformer will be more than output of bulb2 .

    Devendar Jakhar

    • Devendar Ji, Bulb1 is in series with bulb2 circuit, so any power consumed by bulb2 will be reflected in bulb1, because both are of same rating. You cannot pass more power to bulb2 through bulb1 by keeping bulb1 cold.

      let’s forget about voltage and current, let’s compare the heat on the filament.
      If suppose the heat on filament of bulb2 is 200 degrees C, then the heat on the filament of bulb1 should be also 200 degrees since the power is entering through bulb1…right? How can filament of bulb2 generate more heat than filament of bulb1 since both are technically in series and the actual power is entering through bulb1??

      • Swagatam Ji!

        I hope by now you have got idea , why bulb 2 is glowing more than bulb 1.

        I was taking about RL series circut
        But you checked RC network .

        RL series – when resistive load and inductive load ( coil , inductor , choke transformer) connected in series.

        RC – when capacitor connected in series
        with R

        let me explain in a simple way .
        bulb getting power from secondary winding of transformer , secondary winding is getting power from primary winding, and primary winding is in series with bulb 1.
        bulb 1 takes less power than primary winding. hence bulb 1 glowing less than bulb 2.

        What is rating of transformer you have used in circuit.

        Devendar Jakhar

        • Devendra ji,

          What you are saying is not explaining the condition or the question that I have raised.
          When two identical bulbs are in series with the supply their glow has to be equal. Here all the current (or power) to bulb#2 is passing through bulb#1. If bulb#2 is glowing at say 40 watt, this 40 watt power has to pass through bulb#1 also right? Therefore bulb#1 should also glow at 40 watt? I

          you are saying bulb#1 “takes less power from primary winding” of the transformer, so from where does bulb#2 get the extra power?? If according to your judgement say primary gets 5 watts from the bulb#1, then from where the extra 40 watts arrive at bulb#2??

          I hope by now you must have understood the point.

  10. Hi !
    this is a RL circuit in series. just Google ‘RL circuit in Ac’ you will find all the answer.

    Devendar Jakhar

    • Hi, yes that may be correct, I went through all the formulas and descriptions but nothing explained how the lamp2 is able to produce more illumination than lamp1? If you know the answer please share with us.

      Here many parameters are involved, 100Hz from the bridge, PWM frequency from the circuit, and the transformer’s flyback topology, all these cannot be considered as a simple RC network

      • Oh it is a relevant Swag. The cap is acting as Resonant ringer.
        Your best bet is to get the Transformer to itself to Ring in line with the oscillator frequency.
        If the Earth is hanging upon nothing, Resonance keeps it there.
        That we all need to immitate to gain Power from Nothin!

            • However, it is best to Inegrate Resonance in any Inverter circuit design. Resonance would keep the Inverter Transformer (when under or no load) from becoming an amperage Hog.

            • An inverter consumption directly depends on the connected load, when there’s no load the inverter is supposed to consume negligible current, unless there’s some serious fault in the inverter.

            • Sir. Swagatam, I am giving you theoretical explanation on Resonance in any type of inductor. Rather I have PRACTICALLY tested what I am telling you. I am a Builder so no hogwash words from the blues please.

              If you tune any inductor to resonance, it will stop taking current from the source anymore!!!
              In other words, when you tune the Secodary to either Natural Resonance or Padded Resonance (Forced/Super Imposed), Lenz would be Negated right away. And when that happens the inductor or Transformer becomes Asymmetrical Transformer.

              Do the practical test yourself.
              Take an LCR Meter and measure the inductance of a Ferrite Core Secondary side trafo. T
              Determine your oscillator frequency which could be 30Khz or more.
              Imagine that!!
              So please go for it….. RESONANCE!!!!

  11. Hi sir,

    Where can I find 220 -0 – 220v to 220V transformer and MOSFET?

    Let me try to investigate a bit deeper, this is really interesting and yeah I too don’t believe in free energy.

    I will be using two 100w bulbs. And to be on safer side I will use a computer UPS on battery mode for mains input to your setup. On oscillator stage I will use AMV or Arduino SPWM generator with proper current limiter circuit (LM317).

    Will this emulate the same setup of yours ???

    I will measure AC current consumption vs output AC current.

    I am ready to face the disappointment in the experiment, as nothing called free energy. but let us investigate what is the reason behind this phenomena / illusion.


    • Hi GR,

      I just checked the transformer secondary specs, it is actually 110V, however I am not considering the voltage or current here, I am only considering the illumination level. Lamp1 and Lamp2 both being 200 watt with their ratings should have shared same illumination under any circumstances, since both are apparently in series with the power line.

      Filament bulbs can never create an illusion, because the glow on their filament will be directly proportional to the consumed power, therefore if Lamp1 is glowing at 5 watt then it must be consuming 5watts and lamp2 should be consuming around 40 watts, so where is this extra power coming from? That’s the question.

      If it is working with a 220V-0-220V to 110V transformer, it should work with any other smaller version also.

      You can try this with a 12-0-12V/220V transformer. Feed the 12V DC from another transformer rated at 12V/220V by rectifying its output through a 1N5408 bridge, don’t add any filter capacitor to the rectified output.

      add a 100watt or 40 watt bulb in series with the primary of this transformer, and connect another 40 watt bulb at the output of the inverter transformer…this should replicate the above concept perfectly.

      You can use Arduino SPWM for this experiment for the initial test.

  12. Hi Swag,

    I read your post and I am it is due to emf produced in transformer. I have seen it when I was working on invter with little higher frequency than 50hz. try to use something else instead of lamps or increase the distance. You know I am also working on same thing to find out if it is possible to consume this power generated in air by magnetic fields. to proof, try to connect your multimeter negative prob to ground and bring positive prob near to the system, you should see some readings in meter. same multimeter experiment can be done while you charge your battery. put positive prob near to battery and negative connect to ground.

    • Hi Saqib, yes that should be happening because of a back EMF but anyway it is generating more output than the input? That’s the question which needs to be investigated.

  13. Namaskar !

    Your blog is awesome!

    Great job you are doing!

    You was not agree with free energy concepts , written by other writer / researchers in your blog.
    there are millions of fake videos on YouTube about free energy.

    This time article was written by reliable trust worthy and very knowledgeable person Mr. Swagatam , so I was very exited .

    I did some experiment with my inverter based welding machine . but result was not as expected.

    transformer is different type in my machine.
    input to the tranfomer is not 50 hz but may be some kHz .

    If you found still now your free energy system working properly please let us know.
    if you found it was because of faulty components in your circuit or faulty connection or circuit .
    please update .
    I m waiting your update .
    Thank you very much

    • Hi, thanks for liking my website. appreciate your interest!

      The above mentioned phenomenon was accidentally discovered by me while testing the aforesaid inverter design.
      I still don’t believe in free energy systems which are discussed on various websites and youtube channels, unless there is some scientific truth behind the concept.
      I have explained above what I actually saw during the experiment. If possible I’ll try to conduct the experiment once again soon, and reconfirm the results with a video shoot.

          • Thank you , Swagatam Ji. I saw your video , it’s amazing! I want to build this one. Please suggest me oscillator circuit. Transformer you have used seems different type. Can I use different MOSFET . Regards Devendar Jakhar

            • I love your posts here from zambia, kindly clear for me on the tranformer, the transformers i can find here in zambia, usually are center taped on the secondary ( out put sided) while the side where the we connect the main usually have only two wires, the common transformers we can salvage from aready existing inverters are usually 220v down to 12 v, so Big man, how do make this circuit with such transformer, and can i use any mosfets such as the 3205, 1010e, thanks in advance, Love from zambia God bless you.

            • Thank you Martin, the mentioned free energy phenomenon was an accidental discovery, when I operated an inverter with 310V DC from mains with a transformer having a rating of 220V-0-220V primary, and 110V secondary. the bulb was connected to the secondary side. I do not have much idea regarding the technical explanation of the outcome of the experiment

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