156B Week 7

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • Machined linear alternator

  • Circuit built and tested for charging capacitor

  • Handle CAD design still needs work but close to finish

Accomplishments from Previous Week

• • Power generation components have been purchased and validated

  • Report updated

  • Machined PVC pipe to get the desired dimensions

  • Handle 3D CAD updated

  • Heads CAD updated

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • Finish CAD for handle - Ariyan

  • 3D Print new handle - Chris/Ariyan

  • Assemble handle with power-gen circuitry and existing scope heads - Everyone

  • Revise Report - Everyone

  • Use equations to predict smallest possible design for inductor

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• • Handle too large, too many organic curves for fingers

    • Actions Taken: Handle design adjusted to be thinner, have less grooves, and more geometric/modern design

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

• • Validate theoretical voltage and power calculations for linear inductor

    • Actions Taken: Conducted experiments with oscilloscopes and loads on our inductor to measure power

  • Test limits of size of inductor

    • Actions Taken: Inductor reduced in size by machining down the outer diameter of existing pipe and using lathe to re-coil wire

      • Will use theoretical equations to see optimal size/length of inductor as well as determine minimum requirements

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

• • Use videos to demonstrate power generation

    • Actions taken: Recorded video of magnet passing through mechanism while connected to the oscilloscope

Risks and Areas of Concern

• • Fitting circuitry inside handle

  • Circuit able to output light

  • Handle must be rigid to withstand shaking

Resources or Information Required but not Available

• • N/A

Schedule

• • End of this week: Have a prototype working with existing heads

Budget (list amount spent and amount remaining)

Progress on Report and Webpage

• • Still need to add more useful figures such as CAD, circuit diagram, and pictures of power generator