Abstract: A self generating power source includes a housing unit including a housing body, and an energy conversion unit, a rectifying unit and an energy storage unit all disposed inside the housing body. The energy conversion unit includes two first induction members and a second induction member. The first induction members are movable relative to the second induction member for generating an alternating current in the second induction member by virtue of electromagnetic induction. Each first induction member has two magnetic poles opposite to each other in polarity. The first induction members are disposed such that two of the magnetic poles of the first induction members having the same polarity are disposed to confront each other. The rectifying unit is coupled electrically to the second induction member for converting the alternating current into a direct current. The energy storage unit is coupled electrically to the rectifying unit for storing the direct current.