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+--- Thread: Self Powered Back EMF (/showthread.php?tid=8)
Self Powered Back EMF - JoeLag - 03-28-2023
Here I show you the concept:
https://youtu.be/MsG3xQHQIW8
My invention is a simple, low-cost, self-oscillating system that harnesses the back EMF of two coils to produce a sharp spike of energy that can be used to power devices or charge batteries.
The system uses only a few components to trigger the feedback loop, including a low voltage zener diode and an SCR (silicon-controlled rectifier) to dump the charge of a flash capacitor into one of the coils.
In details, The system is powered by three dry cells, with two of them being integrated into the coils themselves. The coils are wound around magnetic cores, with a thin paper layer in between to act as a dry cell. This setup creates a total of three dry cells, which, when run in series, produce a few volts of power that can be fed back into the system for a back EMF feedback loop. and an SCR diode is used to dump the charge from the capacitor into one of the coils, causing a back emf spike that triggers the system to oscillate. The dry cell acts as a power source, while the coils generate a back electromotive force (emf) due to their magnetic fields. The system is designed to operate as a self-triggering feedback loop, with the triggering voltage of the SCR adjusted based on the output voltage of the coils. The dry cell properties of the coils also create an internal capacitance, which helps the system during "off" times
The addition of a metal core to each coil, with a thin paper insulator between the core and the coil, creates a dry cell effect within the system, effectively doubling the power output of the generator. This is due to the metal cores acting as an anode and cathode, with the thin paper insulator acting as the electrolyte. The voltage generated by the coils and dry cell effect can be added together to create a larger voltage for the flash capacitor to discharge. By using the magnetic cores as dry cells in addition to the paper, the voltage difference between the two coils can be increased, creating a larger voltage output.
It's important to clarify that the "dry cell" in this invention is not a traditional dry cell battery that we commonly use in electronics. Instead, it refers to the phenomenon of creating a voltage potential using a metal core and a thin paper insulator as an electrolyte.
This phenomenon occurs due to the presence of moisture in the air. The thin paper insulator, which is typically made of cellulose, is hygroscopic, meaning it readily absorbs moisture from the air. When this moisture comes into contact with the insulator, it creates a conductive path between the metal core and the coil, allowing for the flow of electrical current.
As the generator operates and produces back emf, the dry cells become charged, providing additional power to the system. This helps to ensure that the generator can continue to operate, even when the dry cell battery runs low or is depleted. When an alternating current flows through one coil, it generates a magnetic field that fluctuates in strength and direction. This fluctuating magnetic field induces an alternating current in the second coil, which is placed in close proximity to the first coil. This phenomenon is known as mutual induction.
The back emf feedback loop is an essential part of the generator, as it allows the system to continue generating power without the need for an external power source. By carefully tuning the values of the components involved, a stable and efficient feedback loop can be established, resulting in a steady stream of electrical power.
To ensure a stable oscillation, a compensator voltage system can is implemented to adjust the triggering voltage of the SCR based on the output voltage of the coils. This helps maintain a consistent feedback loop, allowing the system to operate continuously.
this system is a promising approach to harnessing the energy of back EMF for practical applications. The use of dry cells integrated into the coils themselves, along with the addition of the paper layer, provides a simple and effective way to generate power and trigger the back EMF spikes. With further development and optimization, this system could have a wide range of potential applications in areas such as renewable energy, wireless power transmission, and more. This is why I feel like I must share my research as I go along.
It is possible to modify this dual coil invention to use a small voltage from a dead rechargeable 12-volt battery to start the trigger pulse. Once the feedback starts and maintains in amplitude, you can send the extra energy back into the source battery by inducing the voltage from a third coil and rectifying it back into the dead trigger battery.
In this loop, the source trigger battery would charge up quickly, and the SCR cap dump and voltage compensator stage would adjust accordingly to keep the feedback trigger going from the cap dump into the coil for back EMF spike to maintain feedback. However, it is important to note that the success of this modification will depend on several factors.
Replacing the thin paper electrolyte with a more durable and long-lasting material would be a crucial step for large-scale production and use as a power plant. Some possible alternative materials could be polymer or ceramic-based electrolytes, which are known for their durability and resistance to environmental factors. However, further research and development would be necessary to determine the most suitable material for this specific application.
The wearable version of my invention involves using the human body as an electrolyte in between two wearable coils that trigger a back EMF spike. This works similarly to how original idea works, but instead of using a thin paper in between the two coils, the body would be used as the electrolyte.
To make this work, we need to modify the coils and make them wearable in some way. The wearable coils generate back EMF and work in a feedback loop with two coils to trigger the back EMF spike. This would wirelessly charge devices such as cell phones, tablets, and small laptops in pockets and bags near the body where the wireless radiates.
The human body would not be the power source, but rather used as a low voltage trigger pulse to start the back EMF spike feedback loop. As long as the frequency is kept safe for humans and the current is not too high, it could be explored as an alternative option to wireless charging.
Wireless power transmission using electromagnetic fields has the potential to revolutionize the way we power and charge our devices, and my invention offers a breakthrough in this field. By utilizing the back electromotive force (back emf) generated by the coils, an oscillating magnetic field can be created and received by a resonant coil tuned to the same frequency. This enables multiple devices to be wirelessly powered or charged simultaneously, without the need for cumbersome cords or charging pads.
Moreover, the excess energy generated by the back emf can be harnessed for wireless power transmission to nearby devices. This is achieved by employing a resonant coil in the transmitting device to create an oscillating magnetic field that can be received by a resonant coil in the receiving device. This energy can then be converted into electrical power, offering a seamless and efficient way to power our devices.
As such, my invention offers tremendous potential to be a key component in making wireless power transmission a reality. With the ability to wirelessly transmit power to multiple devices at once and the potential to harness excess energy for further power transmission, the possibilities for this technology are endless. This breakthrough has the potential to significantly impact our daily lives and offers a sustainable and efficient solution to powering our devices.