Amongst the issues of LED lights dimmability is one of the latest challenges still yet to be fully solved. Dimming LEDs is theoretically easy, because analogue dimming, this is the adjustment of current, has long been an option. However, this process only works safely when used with one LED bulb. Systems of LEDs require a modern-day way of dimming. The two basic forms of dimming are the PWM or Pulse-Width-Modulation and the analogue dimming, each of which are switched-mode regulators. Those two types are similar in the sense that they both control enough time-averaged current through the diode.
Analogue dimming is definitely a simple method of dimming, this is the adjustment of cycle-by-cycle from the LED Driver current regulated with a potentiometer. The current is adjusted for the LED increasing and decreasing its intensity.
The drawback to analogue dimming is it only works safe as long since we dim just one light bulb. Systems of Leds demand a more refined technique. The problem of dimming a method of LED lights is that we now have many types of LEDs, requiring various methods for dimming. If you have a method of lights we would like to dim, the many LEDs may react diversely towards the same amount of current, and as the current is reduced some LEDs can switch off later or sooner than others. Also, analogue dimming largely changes the color from the light, similarly to when it is combined with incandescent lights.
The most commonly used manner of dimming LEDs is Pulse-Width Modulation, that is basically the cutting in the phase with a certain frequency. PWM switches the devices between fully on and fully off with a frequency that should not be told from the human eye, therefore LED Dirver Ul always run on the forward current recommended. The regularity of switching determines the brightness of light, so the longer the lighting is “on” the brighter the light will be. Here is the same technique used in incandescent light dimmers as well, other than incandescent lights react to current more slowly, and therefore require a different frequency.
2 kinds of Pulse-With Modulation signals are used often with dimming light: the leading-edge as well as the trailing edge techniques. Both of these are not the same methods for cutting the phase, and bring about separate dimming technologies. The most commonly used dimmers of LEDs use solely the leading-edge technology. Dimmers marked as R or RL are suitable for most dimmable LEDs, because they work with all the leading edge technology and you should not include electronic transformers. TRIAC drivers, or devices governed by the DMX and digital addressable lighting interface (DALI) protocols and, down the road, may include wireless (RF) being a control option, that is certainly dimmers that turn or slide having a knob, all work with dimmable LEDs.
Alas leading edge technologies controlled with a touch or push button, are often powered by an electric powered transformer, excluding many dimmable LEDs.
The other form of phase-cutting technique is trailing edge technique, usually used in MOSFET or is not suitable for almost all dimmable LEDs. Among the latest inventions appearing on the marketplace is the RAIS lamp technology. RAIS lamps give you a higher level of functionality and appear to work with all types of dimmers available on the market. However RAIS technology is still new, as well as its long-term influence on LEDs have not been fully tested. When they turn out to be trustworthy their application both domestically and commercially, can dwxakg in the market to be considerably safer and easier than previous dimmable LED lights’.
Inside the ever-evolving technologies of LED lights, dimmable LEDs remain to get developed to further compatibility and much better performance. While there is no general rule for which dimmer LED Waterproof Power Supply might be appropriate for, always check the technical details with all the distributor. Use of Leds with non-compatible dimmers might ruin the LEDs, plus they are, right now, not the cheapest solution of lighting.