PowerPoint

A world without wires

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Content:1. Early visions2. Problems in power transmission3. Solution of the problem4. How it works?5. Safety6. Areas of use

Early visions of Wireless Power

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We Humans Love Electricity!

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We Humans Love Electricity!And to power our mobile devices we buy:

40 BILLION disposable batteries/year!

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Verb 1 draw into the mouth by contracting the lip muscles to make a partial vacuum. 2 hold (something) in the mouth and draw at it by contracting the lip and cheek muscles. 3 draw in a specified direction by creating a vacuum. 4 (suck in/into) involve (someone) in something without their choosing. 5 (suck up to) informal attempt to gain advantage by behaving obsequiously towards. 6 N.Amer. Informal: be very bad or disagreeable.

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Wires . . . suck

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Batteries . . . suck

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Batteries . . . suck

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Batteries . . . suck

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Bur things that suck . . .create a vaccum . . .. . .and nature abhors a vaccum!11

MIT Physicists Invent Witricity!

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MIT Experiment

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WiTricity Technology:Resonant Energy TransferResonance - Efficient energy exchange between tuned resonant object. - Very little energy transferred to extraneous or off-resonant objects.

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How WiTricity Technology Works

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How WiTricity Technology WorksA power capture coil is brought within range of the power source coil

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How WiTricity Technology WorksThe magnetic field induces current in the capture coil, and a magnetic field around it

The magnetic fields of the two coils couple tightly, and transfer power efficiently

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What About Safety?Non-radiative power transfer uses magnetic near fieldMagnetic fields are safe for people and animalsHighly resonant coupling minimizes energy transfer to off-resonant objectsWiTricity systems are designed to meet intl safety guidelines18

Mobile Electronics Applications

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Home Electronics Applications

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Desktop Electronics Applications

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Industrial Applications

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Electric Cars are BEAUTIFUL

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but are charging cords?

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Other Applications

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Thank you all for listening =)