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Don’t stop. 2.009 Fall 2004 Purple Team. Video introduction. Functional Requirements. Consistent power supply while running independent of a battery Competitive quality and price Ergonomic interface No Running Interference Durable. Design evolution. First generation. User feedback.

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Don’t stop.

2.009 Fall 2004

Purple Team


Video introduction


Functional Requirements

  • Consistent power supply while running independent of a battery

  • Competitive quality and price

  • Ergonomic interface

  • No Running Interference

  • Durable


Design evolution

First generation

User feedback

Final design


User Interface

  • Modular design (MP3 Player / Power Tube)

  • Sliding connector

  • Ergonomic design

  • Hip Belt docking

  • Unending power while running


Internal components


Internal components

MP3 circuit (iRiver)

Neodymium magnet

Clear tube casing

Detachable player casing

MP4ever circuit

30 AWG magnet wire coil


+

-

Battery

How does it work!?

~

Reciprocating magnet

Voltage

MP4ever

Circuit

_

Voltage

iRiver

Circuit

Coils

Reflector magnet


Number of coils

Size of tube

Gauge of wire

Number of turns per coil

Magnet / Coil details

  • Theoretical Model

    Predict effects of changing variables

  • Optimization Tests

    Final Design

    • Double Coil design

    • 1100 turns each

    • 6 in. tube length

    • 1 in. tube ID

    • 28 AWG wire

Location of coil


AC from coil

Wave Rectifier

Driver Chip

Capacitor Bank

Switching Regulator

Output Filter

Voltage regulation

  • Input

    2 Hz AC

    10 V Max. peak-to-peak

    0.45 W Max.

  • Output

    1.4 V

    0.15 W Min.

    Steady Waveform


Coil output

Full Bridge Rectifier

Capacitor Bank

Switching Voltage Regulator

Average = 5.5-10V

Average = 1.4 V

AC from coil

Wave Rectifier

Driver Chip

Capacitor Bank

Switching Regulator

Output Filter

Voltage regulation


AC from coil

Wave Rectifier

Driver Chip

Capacitor Bank

Switching Regulator

Output Filter

Voltage regulation

50-80% Efficient


MP3 player sales

Source: Consumer Electronics Assn., Digital Networks

N. America, Euromonitor Database, China Daily


Develop product alone

  • Requirements

    Raise capital

    Manufacture, market product

  • Evaluation

    No initial brand recognition

    Crippling initial start-up cost

  • Conclusion

    Might never regain initial capital


License concept

  • Requirements

    Obtain patent

    Find partner, broker deal

  • Evaluation

    No running / production costs

    Collect royalties ~ 5% of sales (wholesale)

  • Conclusion

    Best option for profitability


Cost and competition

Competitor prices

Flash memory

iRiver 128MB$ 120

Sony-Philips 128MB$ 140

MPIO 128MB$ 114

Rio Sport 128MB$ 124

HD players

Apple iPod 40GB$ 400

Apple iPod mini 4GB$ 250

CL NOMAD 30GB$ 228

Cost breakdown

MP3 player circuit$ 5

128MB Flash memory$ 20

Circuit, coil$ 10

Magnets$ 7

Battery$ 2

Casing$ 1

Cost to produce$ 45

Wholesale price$ 90

MP4EverRetail price$ 150


Future directions

  • Improve efficiency and obtain better power output to:

    1) Reduce size and weight of MP4ever

    2) Improve charging capability

  • Consider expanding into portable radio market

  • Locate interested buyers


Questions?


Projected ROI, Option1

2005

2006

2007

2008


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