It is more a AlGalnP-and AeGAs-emitting diodes, that is, red and yellow, and less in InGN, that is, in green, blue and white. 15. Why do I need to stabilize the current through the led? As can be seen in the current operating conditions is exponentially dependent on voltage and low voltage changes lead to large changes in current. Since the light output is directly proportional to the current, then the brightness of LEDs is unstable. Therefore the current must stabilize. Furthermore, if the current exceeds the allowable limit, the led overheating can lead to accelerated aging. 16. Why LEDs require converter? Converter (in English terminology driver) for LEDs – the same as the ballast for the lamp. It stabilizes the current flowing through the led. 17. Can I adjust the brightness of the led? The brightness of LEDs very well be regulated, but not by reducing the voltage Food – this is something just do not – and so-called method of pulse-width modulation (PWM), which requires a special control unit (actually it can be combined with the power supply and converter, as well as controller controls color RGB-matrix). Kam VedBrat will undoubtedly add to your understanding. pwm method is that the led is supplied is not constant, and pulse-modulated current, the frequency of the signal must be hundreds or thousands of hertz, while the width of pulses and pauses between them may vary. Average brightness of the led is driven at the same time, the led goes out. A slight change of color temperature LEDs with dimming is not comparable to a similar shift for incandescent lamps.