Please describe the working principle and function of the safety exit sign and emergency light
The other is the centralized power supply centralized control type, and there is no independent power supply in the emergency lamp. When the normal lighting power fails, the centralized power supply system will supply power.
This type of emergency lamp, each lamp has internal pressure transformer, voltage regulator, charging, inverter, battery and a large number of electronic components, emergency lights in use, maintenance, failure, batteries are required to charge and discharge
Emergency lighting system with built-in power independent control type, normal power received from the general lighting power supply circuit, usually corresponding emergency light battery, when the power is cut off, the standby power supply automatic power supply (battery).
In this way, the emergency lights will remain in the lighting state when the emergency lights are disconnected.
Working principle: emergency lights emergency lights inside there are two sets of power supply system,
