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Transcript: Initial Concept Block Diagram 2nd Order Cut-off frequency References Switch Opened Low-Pass Characteristics with simulation Close coupling What is Wireless Power Transfer Progress Output voltage for square-wave input voltage Explore the boundaries Power System Communications Time Restraints Chopper Circuit (Step-up Style) Block Diagram (1st degree) Conclusion Electric toothbrush using wireless charging technology. Wireless Power Transfer Next Step Scheme of Work (Gantt Chart) Notice the descending amplitude Researching from New Zealand Concept of magnetic Inductive Coupling Output Voltage for low pass filter with sinusoid input Transmitter & Receiver Communication Qi;s version of the wireless power transfer concept Voltage Supplied to the transmitter DC Chopper Circuit receiver Circuitry Low-pass Filter Lander, C.W. (1993) Power Electronics, 3rd ed., Berkshire: McGraw-Hill. Mohan, N., Underland, T.M., Robbins, W.P. (1995) Power electronics: converters, applications, and design, Canada: John Wiley & Sons. Provakis, J.G., Manolakis, D.G. (1996) Digital signalling processing: principles, algorithms, and applications, 3rd ed., New Jersey: Prentice-Hall. Smith, D. (2009) ‘Wireless power spells end for cables’, The Observer, 04 Jan, available: http://www.guardian.co.uk/science/2009/jan/04/wireless-power-technology-witricity (accessed 08 Dec 2012) Wilson, T.W. (2006) ‘How Wireless Power Works’, How stuff works, available: http://electronics.howstuffworks.com/everyday-tech/wireless-power4.html (accessed 08 Dec 2012 New Technology? What are its advantages? (Three main) Companies Involved (PowerBeam & MIT) PowerBeam (Solar concept) MIT (Resonance Concept ) Chopper Circuit Qualcomm Aim & Objectives Switch Closed Increase in amplitude Notice the slight distortion at the output General Cut-off frequency as filter order changes (in dB) Step-up Chopper Circuit simulation By Kayode Tinde