[[abstract]]Most of the portable electronic devices use batteries as a power source; however batteries need to be replaced periodically and may eventually lead to environmental pollution. The purpose of this project is to study the conversion of the human muscle energy to electrical energy, store the energy in a super capacitor and use the energy in various applications. This kind of energy harvesting has the user autonomous advantage, additionally, the super capacitor not only charges very fast, but also is an environmentally safe device. Therefore, we apply the design concepts of the advanced 3C technology, focus on the current weaknesses of the application technology of the “The Mini Hand Electromagnetic Generator” and make improvements. The goal is to develop a new technology and product that will eventually make an impact on the green energy industry. In this project, we apply the technology of “SelfPowered Feed Forward Boost Converter Charger” and “ Hysteretic Self Oscillated Feedback Control Buck Converter” to achieve a simple , highly efficient and cost competitivedesign.