Abstract: A power source is provided with a holder-case housing a plurality of slender power modules. Cooling-air passes through on the surfaces of power modules by passing air through the holder-case. An air-duct is formed in the holder-case and intermediate air-inlets are opened in a central portion of the air-duct. A plurality of rows of power modules housed in the holder-case are cooled by the air inhaled from the intermediate air-inlets.

Abstract: A power source is provided with a holder-case for retaining a plurality of power modules which are disposed in a parallel fashion and have sensor leads projecting from their end regions, and end-plates provided with pass bars for connecting the power modules in series. The power module sensor leads are mutually connected outside the end-plates. The sensor leads are flexible lead wires and have the length to allow them to be connected outside the end-plates. The end regions of the sensor leads are connected via connecting implements outside the end-plates.

Abstract: The power source holds a plurality of parallel oriented power modules in a holder-case. The holder-case is provided with cover-casings on both sides and intermediate-casings between them. Holder ribs project from the insides of cover-casings and from both sides of intermediate-casings for arranging power modules in a plurality of rows and retaining them in fixed positions. Cover-casings on both sides and intermediate-casings are joined to sandwich and hold the plurality of rows of power modules in fixed positions via the holder ribs.

Abstract: A thermostat comprises a first laminated metal plate and a second laminated metal plate in which a plurality of metal layers having different rates of expansion are laminated. The first laminated metal plate has a movable contact. The second laminated metal plate is disposed in such a position as to put the first laminated metal plate to the off and on positions. The first and second off temperatures, which put the movable contact in the off position by causing the first and second laminated metal plates to deform, and the first and second return temperatures, which return the movable contact from the off position to the on position, are set respectively at different temperatures.

Abstract: A power source includes a holder-case 2 and a plurality of parallel oriented power modules 1 in the holder-case 2. The power modules 1 are provided with electrode terminals 13, 14 at both ends. The holder-case 2 is of split construction having cover-casings 21 provided on both sides. At least one of the cover-casings 21 is provided with holder ribs 23. The holder ribs 23 have retaining cavities 24 which retain the power modules 1 and prevent their rotation.

Abstract: A battery pack, capable of replacing a plurality of primary or secondary batteries, includes at least one battery body, a battery holder that houses the battery body, and a pair of positive and negative terminals. The battery pack is provided with a recess formed at one end of the battery holder to house a projecting battery terminal positioned in a battery case when the battery pack is stored in the battery case.