Led rechargeable bulbs are widely used in our lives. LED storage lights, led emergency lights, led continuous lights, etc., are all made of led rechargeable bulbs, and they are widely used. Let’s believe and understand the work of led rechargeable bulbs. principle.
What is a led charging bulb?
Led rechargeable bulbs are also known as led storage lights, led emergency lights, led continuous lights, and led unextinguished lights. The led rechargeable bulbs combine general lighting functions and power failure emergency lighting functions. The lighting color can be designed according to different needs, and has wide applicability. Advantages such as easy installation or replacement;

The LED rechargeable bulb includes: a bulb head, a shell, a battery, a light source, a lamp cover, and an electronic control board; the housing space formed by connecting the shell and then connecting the lamp cover via the bulb head, contains the electronic control board, the battery and the light source, and They are connected to each other via wires; the electronic control board can convert AC power to DC power and provide it to the light source, and the electronic control board can detect whether the AC power is truly cut off, and choose whether to switch the power to battery power.
The working principle of led rechargeable bulbs
An electronic control board that includes a power supply circuit, a charging circuit, a power failure detection circuit, and a power switching circuit. AC power is input to the power circuit, and the power circuit converts AC power to DC power for supply to the charging circuit and power switching circuit And the power failure detection circuit, the AC power supply also has another input to the power failure detection circuit to detect whether the AC power has reached a real power failure, the charging circuit charges the rechargeable battery, and the rechargeable battery provides power for one of the power switching circuits , The other power supply of the power switching circuit is the power supply circuit, when the power failure detection circuit does not output a signal to the power switching circuit, the power switching circuit directly outputs the direct current provided by the power circuit to the light source;
When the power failure detection circuit outputs a signal to the power switching circuit, the power switching circuit outputs DC power from the rechargeable battery to the light source; the housing space formed by connecting the bulb head to the housing and then to the lampshade contains the electronic control board, The battery and the light source are connected to each other via wires;
　　 LED rechargeable bulbs can still illuminate normally for more than three hours after power failure or power failure, giving full play to the power failure emergency lighting function.

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