In the lighting industry, the lamps in which the brightness of the light can be controlled are called dimmable. The meaning of the English word dim is to darken or dim.
Dimmable lamps make it possible to control the illumination level, change the visual appearance of the area, and save energy.
Incandescent lamps could easily be dimmed with dimmer circuits due to their nature. When it comes to LED lamps, there are two different options as dimmable or non-dimmable.
Dimmer circuits are simple systems that control the light by changing the voltage. This simple structure could work properly with incandescent lamps. LED lamps, on the other hand, have a much more complex structure. Inside the LED lamps, there is a built-in circuit that converts the AC mains voltage to a much lower DC voltage.
In order for LED lamps to be dimmed with traditional dimmer switches (rotary or sliding switches), the driver circuit inside the LED lamp must have a dim function. If the LED driver has a dimmable structure, the brightness of the LEDs will change when voltage control is made from the dimmer switch.
LED lamps have a lower dimming range than incandescent lamps. While LEDs can be dimmed up to approximately 10 percent of the total light output, incandescent bulbs can be dimmed up to 1 percent of their total brightness.
When dimmable lamps are used, it is recommended that all lamps in the room be of the same brand and model. In this way, each lamp will be dimmed equally when the dimmer is controlled. When different LED lamps are used together, dimming problems may occur as the driver circuits will behave differently.
Dimmable lamps operate smoothly on non-dimmable circuits (standard on, off switches). Non-dimmable lamps, on the other hand, will not work properly in dimmable circuits. Used this way, both the lamp and the switch can be damaged.
Dimmable LED lamps are more expensive than non-dimmable lamps as they require a more complex driver circuit. The energy saving and application flexibility it will provide make dimmable LED lamps a better alternative.
Almost all of the LED lamps in the market have expressions such as dimmable or non-dimmable. If none of these are present, it should be assumed that the lamp is non-dimmable.
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