A power semiconductor device includes a conductive board and a switching element mounted on the conductive board and electrically connected thereto. The hub has a bore in which a rearward end portion of the starter shaft is inserted for rotational movement relative to the hub. Further provided is a nickel-metal hydride rechargeable battery including a negative electrode containing the hydrogen storing alloy. An affinity thread pointer is updated to the thread being run to select the next affinity thread or the thread having the greatest affinity. The upper and lower decks are assembled by heat staking the decks together with thermoplastic blocks.