How to make wireless power transfer system like a smart phone charger, a very simple science project

How to Make Wireless Power Transmission Very Easy and Simple at home DIY. For this project you need, a copper wire 0.2-0.4 mm, 2N2222A transistor, 1.2k resistor, Two cell of 1.5V battery, LED and connector.
Step#1; You need make primary coil about 30 turns, the tricky point in primary coil is one "loop" at center. At 15th turn make extra loop that will connected with positive end of battery, Seed video tutorial guide carefully here https://youtu.be/jM2C4FK_rIM
Step#2; Secondary coil about 40-50 turns. Remember, Secondary coil always have more number of turns than primary coil. So that wireless transmission of power can work otherwise not.
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Science:
Wireless power transfer is the transmission of electrical energy without wires as a physical connection. Wireless power uses the same fields and waves as wireless communication devices. Various radio-frequency (RF) technologies are used for wireless power transmission.
Wireless power transfer (WPT) systems allow power to be transferred from one electrical network to another without the need for wires or exposed contacts. For a large number of diverse applications, this feature is highly advantageous, and in certain cases has enabled new applications to be realized. Further, WPT is poised to play a vital role in the worldwide drive to electrify transportation systems and, thus, become ubiquitous throughout technologically advanced future societies. Therefore, knowledge in the area of WPT is increasingly important for the modern power electronics engineer. In this chapter, various WPT techniques are described, before a focus is developed on inductive power transfer, IPT, systems. Fundamental and essential knowledge related to the design of IPT circuits and control methods is then presented.
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Видео How to make wireless power transfer system like a smart phone charger, a very simple science project канала Beautiful Craft