POWER SUPPLY OF FIRE ALARM BOX Russian patent published in 2010 - IPC H02M3/00 

FIELD: electricity.

SUBSTANCE: power supply of a fire alarm box comprises an energy storage, a high-voltage filter rectifier, a high-frequency key, a high-voltage voltage divider, a timing circuit and a microcontroller and has the following connections: input voltage bus is connected with the energy storage with its output through the high-frequency key connected to a zero bus, and through the high-voltage rectifier by a high-voltage voltage bus connected to a high-voltage filter, a high-voltage voltage divider and through an output connector with a UF receiver of the fire alarm box, an output of the high-voltage divider is connected by a feedback bus to the first input of the microcontroller, an input/output bus of which is connected with the timing circuit, and an output 1 - to a driving point of the high-voltage key, the second input of the microcontroller is connected to an output of the UF receiver of the fire alarm box, and the second output of the microcontroller is an output of the fire alarm box.

EFFECT: improved performance and consumer characteristics.

2 cl, 1 dwg