| 摘要 |
PURPOSE:To decrease possibility of causing off of a circuit even when a trouble occurred in other radio equipments when a power source section is out of order by using spare system in the power source section. CONSTITUTION:Output of a power source section 14 is applied through a diode 15 and output of a power source section 34 is applied through diodes 36, 37 to a #1 presently used radio equipment 1. When output voltage of power source sections 14, 34 is 10V, voltage at a point passed through the diode 15 is lowered by about 0.7V by resistance of the diode itself, and becomes about 9.3V, and voltage at a point passed through diodes 36, 37 becomes about 8.6V. Voltage of 9.3V is supplied from the power source section 14 to the #1 presently used radio equipment. When voltage becomes 0V due to occurrence of fault in the power source 14, about 8.6V is supplied from the power source section 34. Accordingly, the #1 presently used radio equipment 1 operates normally, and not switched to a spare radio equipment.
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