江山How can LED filament bulbs adapt to different voltage requirements?

How can LED filament bulbs adapt to different voltage requirements?
LED filament bulb is an efficient and energy-saving lighting fixture, and in order to adapt to different voltage requirements, some measures need to be taken to adjust it. The following will introduce how LED filament bulbs can adapt to different voltage requirements.
Firstly, in order to adapt to different voltage requirements, a dimming circuit will be used inside the bulb. There are two common dimming methods: PWM dimming and resistor dimming. PWM dimming is a method of changing brightness by continuously switching current, which can achieve a large range of brightness, but requires complex circuits to implement. Resistance dimming is a method of changing the brightness of a light bulb by altering its resistance. It is easy to operate and cost-effective, but the brightness range is relatively small.
Secondly, in order to adapt to different voltage requirements, suitable current drivers will be used inside the bulb. LED bulbs need to operate at a certain current, and high or low current can affect the lifespan and brightness of the bulb. The current driver has the function of stable output current, which can provide appropriate current according to different voltage requirements to ensure the normal operation of the light bulb.

In addition, to meet different voltage requirements, a multi chip combination can also be used. LED chips can usually operate normally at different voltages, and by combining multiple chips together, light bulbs that meet different voltage requirements can be provided. This method can select the number and combination of chips according to actual needs, which can meet the brightness requirements and adapt to different voltages.
In addition, to meet different voltage requirements, switch mode power supplies can also be used to provide stable voltage. Switching power supplies can convert input voltage into appropriate output voltage and current, unaffected by input voltage fluctuations. By using a switch power supply, the required voltage and current can be stably provided to the LED filament bulb to ensure its normal operation.
In addition, for specific application scenarios, different voltage input interfaces can be designed to meet different voltage requirements. For example, in household use, the common voltage requirement is 220V, and light bulbs can be designed to be directly connected to a 220V power source. In special occasions such as automobiles, the voltage requirement may be 12V or 24V, and light bulbs can be designed with interfaces that are compatible with these specific voltages.
In summary, LED filament bulbs can adapt to different voltage requirements through dimming circuits, current drivers, multi chip combinations, switching power supplies, and designing different voltage input interfaces. These measures can ensure the stable operation of LED filament bulbs at different voltages, achieving the expected brightness and lifespan. Meanwhile, the adaptability of LED filament bulbs also provides convenience for their application in different scenarios.