Abstract: A power supply system includes a plurality of power supply devices which are mounted in a mount region and a control [means] unit (namely, a central processing unit), The control [means] unit is connected to the power supply devices and sets a power supply quantity to be supplied to an external load apparatus. [Herein,] The power supply devices are assigned connection positions as addresses in the mount region[, respectively]. Further, the power supply devices send the connection positions as connection position signals into the control [means] unit. The control means determines the number of the power supply devices based upon the connection position signals and sets the power supply quantity based upon the number.

Abstract: A spacer for brazing having a main body made of a steel plate such as a hot rolled steel plate, a stainless steel plate or the like and a coating provided on the surfaces of the main body by a flame spraying process such as a metal spraying process or a plasma spraying process. The coating is an inorganic substance which is low in wettability in relation to a brazing filler metal. When the brazing filler metal is a copper series one, the inorganic substance is a metal oxide such as a lumina, zirconia, a mixture of zirconia and titania, magnesium zirconate or the like, or an inorganic nitride such as boron nitride or the like.