File:Knijpkat 996637.JPG

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Knijpkat_996637.JPG ‎(500 × 480 pixels, file size: 71 KB, MIME type: image/jpeg)

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Summary

Description
English: A w:en:dyno torch, a hand powered electric torch, disassembled to show mechanism. Squeezing the handle (left) spins the flywheel through the plastic rack and pinion gear. The flywheel has a ring-shaped magnet on it which, combined with the coil of wire (right), makes a brushless AC generator. The magnetic field of the spinning magnet induces electric current in the coil of wire, which powers the light bulb. The torch only generates light when it is pumped, so it doesn't need an ON/OFF switch. Modified by Midnightcomm to correct white balance and be cropped.
Date
Source Photo taken by author with w:Nikon Coolpix 950 camera
Author Bios
Permission
(Reusing this file)
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.
w:en:Creative Commons
attribution share alike 		This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
This licensing tag was added to this file as part of the GFDL licensing update.

Captions

A dyno torch, a hand powered electric torch, disassembled to show mechanism

Items portrayed in this file

depicts

mechanically powered flashlight

inception

13 September 2005

File history

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Date/TimeThumbnailDimensionsUserComment
current01:43, 1 May 2006Thumbnail for version as of 01:43, 1 May 2006500 × 480 (71 KB)Midnightcomm{{Information| |Description=Corrected white balance (the previous version had a blue tint), made background solid white, cropped version of previous file version. |Source=Wikimedia Commons |Date=[[April 30], 2006 }} Modified by uploader.
15:14, 14 September 2005Thumbnail for version as of 15:14, 14 September 2005640 × 480 (62 KB)Bios~commonswikiinterior of a w:en:dyno torch (by squeezing it, a magnet starts spinning and thus generates electricity in a wire coil; pretty much like a bike dynamo) - taken with w:Nikon Coolpix 950 - {{GFDL}}

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