PURPOSE: To provide the load power feeding circuit arrangement of simple constitution with less power loss by supplying energy from an AC power supply through a switch mode power feeding unit to at least one of two partial loads and directly supplying it to the other as desired.

CONSTITUTION: Respective switches 5 and 6 are provided with the serial connection circuits of diodes 7 and 8 and FETs 9 and 10 and energizing is performed from the respective partial loads 3 and 4 to a connection point 11 between first and second load branching lines 3 and 5 and 4 and 6. Further, two divergence branching lines 12 and 13 and feedback branching lines 14 and 15 are respectively mutually serially connected between terminals 1 and 2. The respective divergence branching lines 12 and 13 are provided with the diodes, a current by the unidirectional conductive elements is small power loss and an additional control means is not required. Then, energizing is performed from a contact point 16 to one of the terminals 1 and 2 as desired without causing short circuit between them. Also, the feedback branching lines 14 and 15 are constituted of FETs, energizing is performed at optional time only in a direction from the connection 17 to the terminals 1 and 2 and a unidirectional semiconductor switch is used similarly to the switches 5 and 6. Thus, the lowest power loss is designed with a manufacture cost.