Wireless thoughts😇

WiTricity!!!!

Have you ever heard this word before???

During the time of my first year of Btech. , I heard this word. In my college all department have their own associations and those are the platform where to interact with seniors.at that year our association was inaugurated by a senior engineer from KSEB.he delivered an inaugural speech and mention about the power transmission. He quoted that communication technology revolution happened after the invention of wireless system and still have the opportunity to find the way to transmit electricity through wireless. Those talks gave me spark in my mind and after that program I googled how can we transmit the electricity wirelessly. That search was ended with word WiTricity.

WiTricity means wireless electricity, this word was firstly used by Massachusetts scientists, and they invented one circuit and transmitted 60 watts energy with 5 meters of distance. Which was based on the theory of eminent scientist tesla. Law of induction, our transformers and electric motors are operating on the basis of the theory of induction. Even in transformer the energy transfer from primary core secondary is by magnetic field, those principle also can be used for the wireless Technology.

From those papers, I got a decent idea about the wireless transmission and at the same time  i realized that it’s not feasible for the long-distance power transmission. But it can be used in the portable device charging. So, I focused my research on the portable device charging.

Wireless charging pad for mobile and laptops, wireless charger for artificial pacemakers, wireless charger for electric cars. From those all applications i have selected wireless charging pad for mobiles for the prototype development.

The wireless charging system consists of a transmitter which includes a power circuit and magnetic oscillator which generates a signal with high frequency. That signal feeds to a coil. Receiver section consists of a Receiver coil and rectifier circuit with voltage regulator. regulator maintains a constant Voltage output.

I discussed these all with my classmates and we formed a team, and our department gives permission to use the lab for testing. we designed an oscillator circuit and transmitter coil. we did some testing in order to check whether the power transfer can be possible through this arrangement. After the testing we realized that that circuit is not enough carry power for the mobile charger.

Around 1-2 months testing we found one circuit which can transfer the power for the mobile charger. at that time my dream was Indian made phone with our wireless charging technology. These all the things happened 2015.

Today we wireless charging is common and premium phone brands are providing wireless charging as optional feature.

All happens for the good reason. When a door is not open towards you, still gives an opportunity to knock other doors. If I quote Paulo Coelho words, it might be a conspiracy of nature.