220伏转12伏广告灯箱
Can a 12v advertising light box still be used when connected to a 220v lamp?
The original 12v advertising light box is replaced with a 220v lamp and directly connected to 220v electricity. It will definitely work! If you directly replace the 12-volt advertising light box with a 220-volt lamp, the input power is still 12 volts, and it will definitely not light up.
LED lights need to distinguish between lamp types, and different lamps use different voltages. The 220V you mentioned should refer to the voltage of daily electricity, which is alternating current, while LED lights use direct current. No matter what the rated voltage of the lamp is, it cannot be input directly. The medium between alternating current and LED lights is the LED power supply, which converts alternating current into direct current through the power supply, and at the same time converts the output voltage into the rated voltage of the lamp, so that the LED lamp can work safely and efficiently.
For example, commonly used household lamps are directly connected to 220V, and there is a driving power supply inside, which has converted the 220V voltage into the voltage required by the internal LED lamp set. This makes it convenient for users to buy and replace them anytime and anywhere. Convenient as a general purpose lamp.
But some lamps, such as some light strips, use 12V or 24V DC power supply. The above LED lamp groups are connected in series and parallel according to the 12V or 24V voltage and cannot be directly connected to the 220V circuit. , you need to buy the corresponding power source that converts from 220V to DC 12V or 24V before you can use it, which is equivalent to a low-voltage lamp.
The voltage is different, which is determined according to the use environment and the purpose of the lamp. They are all LEDs and have the same lighting effect. There is no saying that different voltages are good or bad.
For example, commonly used household lamps are directly connected to 220V, and there is a driving power supply inside, which has converted the 220V voltage into the voltage required by the internal LED lamp set. This makes it convenient for users to buy and replace them anytime and anywhere. Convenient as a general purpose lamp.
But some lamps, such as some light strips, use 12V or 24V DC power supply. The above LED lamp groups are connected in series and parallel according to the 12V or 24V voltage and cannot be directly connected to the 220V circuit. , you need to buy the corresponding power source that converts from 220V to DC 12V or 24V before you can use it, which is equivalent to a low-voltage lamp.
The voltage is different, which is determined according to the use environment and the purpose of the lamp. They are all LEDs and have the same lighting effect. There is no saying that different voltages are good or bad.