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Shake it, baby

Discussion in 'Electronic Basics' started by David Harmon, Dec 26, 2005.

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  1. David Harmon

    David Harmon Guest

    OK, I got a shakelight flashlight for Christmas. Now the shaking
    idea is better than no light in an emergency, but obviously a loser
    for everyday use. Who wants to design the charger with an external
    coil and a small oscillator to drive it? Must not overdo it and
    degauss the magnet.
     
  2. Allen Bong

    Allen Bong Guest

    OK, I got a shakelight flashlight for Christmas. Now the shaking
    idea is better than no light in an emergency, but obviously a loser
    for everyday use.

    ----
    I have also bought one from a travelling salesman from China. It costs
    about $1.80 (RM7.00) and when I take a magnifying glass and examine the
    inside, I found that the coil ended up no where. The small PCB just
    housed a small resistor and a slide switch. There were also 2 3V
    CR30XX batteries. From what I can see, the coil wound is less than a
    layer as I can still see the plastic core.

    There is no transistor or diode or .1F capacitor as described in other
    posts in s.e.b. So I guess once the battery is out I'll need to
    replace them with new ones. Or else I can shake till my arm breaks and
    they won't be any light.

    Allen
     
  3. That is an amazing low price for a flashlight and a futility generator.
     
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