| 摘要 |
PROBLEM TO BE SOLVED: To provide a voltage compensation circuit that can efficiently supply a constant voltage to a load device in a simple configuration even when an output of a DC power supply such as a storage battery drops.SOLUTION: A voltage compensation circuit 1 includes an isolated DC/DC converter 10, first and second diodes D1, D2, and a voltage detection circuit 20 for detecting a terminal voltage of a load device 3. The DC/DC converter 10 starts to operate when the terminal voltage of the load device 3 detected by the voltage detection circuit 20 is below a predetermined threshold, and supplies a composite voltage V1+V2 of an output voltage V1 of a storage battery and an output voltage V2 of the DC/DC converter 10 across the load device and feedback-controls the level of the voltage V2 such that the composite voltage V1+V2 maintains a predetermined voltage level. |
