Home Office Home Remodeling. Kitchen Living Room. Lighthouse Hydro Luceco Nanoleaf. While most LED bulbs are now dimmable, not all of them are and not all of them dim in the same manner Since LEDs consume such a low wattage, many types of dimmers do not function with LED in the same way that they do with high wattage load incandescents.
When dimming an LED you may notice the following:. Share 0 Tweet 0. Leave a comment Name Email. Why buy from EarthLED? Lowest Price Guarantee. Expert Customer Support. Great products, prices and customer service Cool white, soft white who knows?
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Shopping Basket close. In principle, two different types of dimming are possible for dimming LED lamps: the phase angle dimmer and the phase segment dimmer. With the phase angle dimmer, the zero-voltage crossing of the sinus during the half cycle delays the switching on and therefore reduces the voltage consumption.
The principle is similar for the phase segment dimmer, but here the voltage is switched on at the zero-voltage crossing, and then switches off during the half wave. However not all LED bulbs are dimmable. Conventional incandescent or halogen lamps can simply be dimmed by reducing the voltage. This is not the case with LEDs. They need a certain voltage forward voltage to shine at all. After that, the brightness increases very quickly as the voltage increases further.
This means that the dimmer has to work very precisely with the voltage characteristic of an LED. Another difference: LEDs require a direct current, so the AC power from the socket must be converted by a technical ballast — and this must just be aligned for dimming.
If this is not the case, either the lamp, the dimmer, or both can be damaged during a dimming attempt. In order for the interaction of the three components to work, these letters must match for the three individual parts. For example, if you have a dimmable V LED, then you usually need a phase control dimmer R, L for normal transformers.
This results in various combination options — but you should be aware of which transformer and which dimmer come into question when buying the bulb, to avoid troubles further down the line.
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