Patent ID: 7939983

Claim:
A generator comprising: a fixed ring core; a predetermined plural number of first windings wound around said ring core, the first windings being spatially separated from, and serially connected to each other, said first windings having a plurality of gap portions therebetween; a plurality of second windings equal in number to said predetermined plural number and wound around said ring core, the second windings being spatially separated from, and serially connected to each other, said second windings covering said gap portions of said first windings; and first and second rotor plates respectively opposed to two surfaces of said ring core, said first rotor plate having a plurality of first permanent magnets equal in number to said predetermined plural number, being opposed to said first windings, and being arranged in such a manner that a same magnetic pole appears, with a plurality of first gaps each being formed between two neighboring ones of the plurality of first permanent magnets, said second rotor plate having a plurality of second permanent magnets equal in number to said predetermined plural number, being opposed to said second windings, and being arranged in such a manner that a magnetic pole opposite to said same magnetic pole appears, with a plurality of second gaps each being formed between two neighboring ones of the plurality of second permanent magnets, wherein said first windings are wound around said ring core in a manner opposed to said first permanent magnets, said second windings are wound around said ring core in a manner opposed to said second permanent magnets, said first and second windings have a same number of turns and a same winding direction, each of the first windings is opposed to a corresponding one of said second gaps, each of the second windings is opposed to a corresponding one of said first gaps, and electricity generated on said first and second windings is taken out by rotation of said first and second rotor plates.