IP67 LED Flood Driver Gas Composition

      Digital cameras and camera-equipped handsets have become mainstream products from new products, which are based on CCD or CMOS technology. In order to support the image sensor in the case of insufficient light, the flash circuit becomes a necessary solution for digital cameras, which is more and more common in camera phones. The main light source to meet the flash requirements is the xenon lamp and the emerging high brightness white light led.IP67 LED Flood Driver

     When a gas mixture is fired, the plasma produces a flash. For consumer Applications, the general duration of the Flash is 2ms. Depending on the type of flash, the energy stored in the capacitor C1 can be as low as 1 joules (small camera) or up to thousands of Joules (professional application). Flash consumption of energy see Formula 1: According to the type of xenon lamp used, capacitor charging voltage is basically 160V to 600V. Low power handheld cameras require less than a few joules of energy, and the output voltage range is 160 to 250V. Higher voltages are generally seen in equipment used in professional studios.IP67 LED Flood Driver

    In addition to the DC voltage, a high-voltage pulse must be provided to excite the plasma in the bulb, producing a high-intensity arc between the two electrodes. The amplitude of the pulse depends on the type of bulb used in the system, from a lower 1.6kV to 10kV. IP67 LED Flood Driver

    A micro xenon lamp is applied to the third external electrode of the lamp tube, 1.6kv/5μs pulse triggering, which is generated by connecting the special pulse transformer shown in Fig. 2 with the high-voltage capacitor. The capacitor is charged to the Flash DC voltage (200V) and suddenly discharges to the lower end of the pulse transformer after the trigger button S1. From the secondary pressure exerted on the bulb (outside the surface), the flash is stimulated.IP67 LED Flood Driver