How Rechargeable Lanterns Work

An electronic control board, the electronic control board includes a power supply circuit, a charging circuit, a power failure detection circuit and a power supply switching circuit. The AC power is input to the power supply circuit, and the power supply circuit converts the AC power into a DC power to provide the charging circuit and the power switching circuit And the power failure detection circuit, the AC power 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 , another 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 supply circuit to the light source;

When the power failure detection circuit outputs a signal to the power switching circuit, the power switching circuit outputs the DC power from the rechargeable battery to the light-emitting source; the accommodating space formed by the bulb head is connected to the shell and then connected to the lampshade, which accommodates the electronic control board, The battery and the light source are connected to each other by wires; when the rechargeable light bulb is powered off or after a power failure, the light bulb can still be illuminated normally for more than three hours, giving full play to the function of emergency lighting for power outages!