Motion Activated Power Source
First Claim
1. An electrical generator as a portable battery replacement which includes a) a housing b) a magnetic field generated within said housing by permanent magnets c) at least one coil resiliently mounted within the magnetic field such that movement or vibration of the housing induces reciprocal movement of the coil in the magnetic field to generate an electric current in the coil d) an electronics device electrically connected to said coil adapted to rectify the current produced and incorporating a charge storage device.
1 Assignment
0 Petitions
Accused Products
Abstract
An electrical generator which includes a magnetic field generated within a housing (10) by permanent magnets (19, 20) located within the housing and a coil (23) is resiliently mounted within the magnetic field such that movement of the housing induces movement of the coil to generate a current. The generator includes an electronics device (45) connected to the coil which is adapted to rectify the current and incorporating a charge storage device (46). In one embodiment, at least one coil is suspended on a torsion wire (33) within the magnetic field and the torsion wire carries a counter weight (47) whose mass is selected to resonate with the vibrational frequency to which the generator is subjected. The coils are arranged to oscillate at frequencies less than 100 Hz and are particularly useful in harvesting the motion and vibration of vehicles.
21 Citations
8 Claims
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1. An electrical generator as a portable battery replacement which includes
a) a housing b) a magnetic field generated within said housing by permanent magnets c) at least one coil resiliently mounted within the magnetic field such that movement or vibration of the housing induces reciprocal movement of the coil in the magnetic field to generate an electric current in the coil d) an electronics device electrically connected to said coil adapted to rectify the current produced and incorporating a charge storage device.
Specification