| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a receiver for automatic fire alarm system to which power can be fed without increasing the capacity of a power unit. SOLUTION: This receiver is provided with an auxiliary power source 13 that is operated when abnormality occurs in an AC power source. The auxiliary power source 13 feeds power to interlocking device lines Le and Lb, when a fire sensor S generates alarm, and also feeds power to an internal circuit simultaneously. In addition, the auxiliary power source 13 is charged by the AC power source. A circuit for feeding power to the interlocking device lines is provided with a fuse, and the interlocking device lines are a smoke ejector circuit and a local sound equipment line.</p> |
