PURPOSE: To improve the rise characteristic of a power source, by lowering the voltage of output with a stabilization circuit, and by connecting the output to another output.

CONSTITUTION: By a multiple output switching regulator, rectified and smoothed DC output is turned ON/OFF via the primary winding of a transformer T1 for a converter, and a switching transistor Q1, and induced voltage is generated on each secondary winding of said transformer T1, and by rectifying and smoothing the voltage, multiple DC output is obtained. In this case, the output of output 1 is voltage-lowered by a stabilization circuit 3 consisting of a three- terminal regulator for example, and is connected to output 2 via a diode D6. The output of the stabilization circuit 3 is regulated slightly lower than the sum of the rated output of the output 2 and the forward voltage of a diode D7. As a result, when the output of the output 2 is lowered, then the diode D6 is communicated with, and from the stabilization circuit 3, the output of the output 1 is fed to the output 2, and the apparatus does not malfunction.