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Posts Tagged ‘dimming LEDs’
The app of Dimmable LED destinations and Bulbs

Among 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, that is the adjustment of current, has long been an option. However, this method only works safely when used with one LED bulb. Systems of LEDs require a more sophisticated method of dimming. The two basic forms of dimming are the PWM or Pulse-Width-Modulation and the analogue dimming, both of which are switched-mode regulators. These two types are similar in the sense that they both control the time-averaged current through the diode.

Analogue dimming is a very simple way of dimming, it is the adjustment of cycle-by-cycle of the LED current regulated with a potentiometer. The current is adjusted to the LED increasing and decreasing its intensity.

The disadvantage of analogue dimming is that it only works safe as long as we dim a single light bulb. Systems of LED lights require a more refined technique. The difficulty of dimming a system of LED lights is that there are many types of LEDs, requiring different methods for dimming. If there is a system of lights we would like to dim, the various LEDs may react diversely to the same amount of current, and as the current is reduced some LEDs can turn off later or sooner than others. Also, analogue dimming largely changes the c

Apr 25th, 2012 | Filed under LED Light
The Application of Dimmable LED Spots and Bulbs

Among 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, that is the adjustment of current, has long been an option. However, this method only works safely when used with one LED bulb. Systems of LEDs require a more sophisticated method of dimming. The two basic forms of dimming are the PWM or Pulse-Width-Modulation and the analogue dimming, both of which are switched-mode regulators. These two types are similar in the sense that they both control the time-averaged current through the diode.

Analogue dimming is a very simple way of dimming, it is the adjustment of cycle-by-cycle of the LED current regulated with a potentiometer. The current is adjusted to the LED increasing and decreasing its intensity.

The disadvantage of analogue dimming is that it only works safe as long as we dim a single light bulb. Systems of LED lights require a more refined technique. The difficulty of dimming a system of LED lights is that there are many types of LEDs, requiring different methods for dimming. If there is a system of lights we would like to dim, the various LEDs may react diversely to the same amount of current, and as the current is reduced some LEDs can turn off later or sooner than others. Also, analogue dimming largely changes the colour of the light, similarly to when it is used with incandescent lights.

Apr 9th, 2012 | Filed under LED Light