Portable Smart Phone Charger Using Human Mechanical Energy by Gear Train with Hand Crank

Chakma, Rocky; Chawaphan, Thanarat; Mamun, Khandakar Abdulla Al; Chakma, A.; Harun, Sajid

doi:10.9790/1676-1203012025

Cited by 1 publication

(1 citation statement)

References 3 publications

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“…Keeping all that in mind, the papers written prior to this do not meet this limitation with the chargers being so huge that they need separate bag for transportation [6]. By using a buck-boost converter in the presented design, even if the user rotates the handle slightly below the required rpm, the battery accumulates the power; opposing the designs which only have the buck converter [7]. And finally, the objective is to have everyone intrigued to be able to build their own device, that is why pre-used components that are easily available were used.…”

Section: Introductionmentioning

confidence: 99%

Open Source Hand-Crank Phone Charger

Slutskiy,

Moreira,

McGuire

et al.

ASEE-NE 2022 Proceedings

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A mobile phone is an essential tool of communication, not only can it be used to connect with friends and family but more importantly to call emergency services in life-threatening situations. Therefore, it is important to make sure that mobile phones do not run out of charge, especially during power outages. This paper reports on the development of a portable hand-crank charger. The goal is to make everyone be able to make a call even when there is a no power, so this paper presents detailed instructions on constructing a portable hand-crank phone charger. The objective is to outline all the steps in such a manner that a person with no engineering background could assemble a similar device. This paper uses as many 3D printed parts as possible and describes each step of the design and assembly explicitly. Calculations include the required input rpm and gearbox ratio determination. The final device has a common USB type A output and is capable of charging any modern smartphone.

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Section: Introductionmentioning

confidence: 99%