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Eternity Flashlight
# 5K40.28


Description: An internal capacitor in this flashlight is charged by shaking the flashlight back and forth (with moderate force). When this is done, an internal magnetic is forced back and forth through a coil. The induced current in the coil then powers the capacitor. A rectifier circuit is used to convert the AC current from the coil to DC before it is connected to the capacitor.

Parts: Eternity Flashlight

Purchased/Built: purchased

Setup Time: none

Quant. in Demo Room: 1

Source: Arbor Scientific

Demo References
Meiners 31-2.10 A coil connected to a light bulb is mounted on a disk rotating between the poles of an electromagnet. Picture.

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