【 Weak current College 】 Xenon Flash and LED the difference between premium light

LED lamp is the use of supplemental lighting led diode on the absorbed object fill light, LED light due to the low energy consumption and high brightness — used in the camera phone or digital camera to the light does not light up when the supplement. Since the brightness of the LED light-emitting diode is much lower than the real Flash, so it can only serve to "fill light" effect. Now some phones have been used and camera-like Flash, such as SonyEricsson, K790c, xenon flash, is the effect you want to repair than the LED light is good, but not the same as always as flashlight LED.

Xenon Flash's principle: Xenon Flash, also known as the high-intensity discharge Flash. Xenon flash lamp consists of a Xenon bulb, pressure stability, and insulated conductors, use exceptional Xenon in ultra high voltage discharge percussion. Its working principle is triggered through the contact points of the camera, through transformer, the moment will be 12V power rose to more than 2 million Volt voltage pulse voltage, start a Xenon bulb of xenon arc 6000K--10000K color temperature in the strong light, the color is slightly purple in phyto-white-blue. When you press the shutter, shutter feedback to CPU a signal, at the same time, the CPU synchronization to transistor outputs a control signal trigger circuit for Flash. Then on to trigger the transistor capacitance begins, the transformer primary produce a pulse, the current has the transformer secondary pressure produced near 4000v, inspire Flash internal hernia ionization and conduction. The capacitance transient storage of electrical energy on through the flash tube discharge into light, complete a Flash.

Early Flash life is very short, magnesium pipe can only Flash once. According to industry standards, then said a million times, real life should be far reaching million times. Now in Flash, through technology upgrading, life should be increased.

LED flashing light principle: LED and not through an atom internaljump to glow, but rather through the voltage at the ends of the pn junction LED to the formation of a pn junction itself, and electronic energy level in the energy level jumps and produces photons to glow. Qualified LED at the rated power of life should reach 10 million hours. If mobile phones are designed to be LED drive current exceeds the rated current for use, LED life will significantly shortened to thousands or even hundreds of hours.