Life safety device with extended shelf life
A technology for life safety devices and batteries, applied in circuit devices, battery circuit devices, safety/protection circuits, etc., can solve the problems of device shelf life, inconvenient removal of products, and cost, and achieve the purpose of extending shelf life. Effect
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[0012] figure 1 Shown is a block diagram of a built-in life safety device 10, which may be, for example, a smoke alarm, a carbon monoxide (CO) alarm, a combination smoke and CO alarm, or the like for alarming a residence or other building A device that provides occupants with warning of potentially life-threatening conditions. The flush-mounted life safety device 10 is typically mounted on a wall or ceiling and connected to an alternating current (AC) power source.
[0013] as in figure 1 As shown in , the life safety device includes a low voltage supply (voltage supply) 12, a battery assembly 14 (which includes a rechargeable battery 16, a battery charging circuit 18, a booster circuit 20 and a battery protection circuit 22), regulator electronics Device 24 , hazard detector 26 , microcontroller unit (MCU) 28 , sounder circuit 30 and battery test electronics 32 .
[0014] A low voltage supply 12 is connected to the AC mains input, as represented by a line input L and a neu...
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