Senior Theses

Publication Date


Document Type

Thesis (Open Access)

Degree Name

Bachelor of Science in Physics



Faculty Advisor(s)

Tianbao Xie (Thesis Advisor)
Jennifer Heath & Bill Mackie (Committee Members)

Subject Categories

Electrical and Electronics | Energy Systems | Physics | Power and Energy


A hand-pulled generator has been designed and tested. A preliminary result has been obtained and discussed. This device was created to provide outlet-free charging. Electronic devices are useful when going out into the wilderness. A portable power supply is necessary to keep an electronic device alive. This project created a device that converts human energy into electricity to charge electronic devices. This thesis overviews the device’s design, build, and tests. Two different tests were run to determine that the device is capable of charging the storage battery. The device presented can provide 14 minutes of charging time with one hour of string pulling. It is concluded that this device can be beneficial to people with electronic devices that need off-grid charging.