Comparing the characteristics of the two lighting circuits, the circuit type super-town type lighting circuit has the characteristics of hysteresis lighting circuit, and has good steady current characteristics, and the grid voltage fluctuation has little influence on the lamp. When the power supply voltage changes, the lamp current changes little, that is, the lamp power changes little; when the lamp is started, the short-circuit current is also small, so the circuit is suitable for a place where the power supply voltage changes greatly, when the lamp is started, since there is no A large current flows through the grid, avoiding the current on the line exceeding the normal value when the high-volume lamp is started at the same time.
With auto-coupled boost, it consumes a lot of power. The lamp current is commutated for a long time and the lamp is easy to extinguish. The power factor of the working circuit is high, and the capacity of the capacitor changes, which has a great influence on the ignition of the lamp. The steady current characteristics are poor, and the grid voltage fluctuation has a great influence on the lamp. When the power supply voltage changes, the lamp power changes greatly. To ensure the long life of the lamp, strict requirements must be imposed on the ballast and the trigger. Its own power consumption is small, 5% smaller than Super Town.
The lamp current commutation zero-crossing time is short, ensuring that the bulb repeats the ignition point. The operating current has a low power factor and the ignition lamp must be supplemented with a compensation capacitor. The structure is simple and the cost is low. Triggered by a trigger, the light is easy to start, especially for new lights. In recent years, small-power lighting metal halide lamps have begun to use electronic ballasts. At present, some problems have not been solved in the supporting technology (such as audio resonance problems in high-frequency state), and have not been widely used.
A type of Auto Lamp that used quartz as glass shell and filled with halogen gas gives a very bright light. Principle is inside the halogen bulb such as injection of iodine or bromine, under high temperature, the sublimation of chemistry with halogen tungsten filament, tungsten will be cooled to solidification on tungsten filament, form balanced circle, avoid premature tungsten filament fracture. So halogen bulbs live longer than incandescent bulbs. The supply voltage of halogen lamp is usually divided into ac 220V and dc 12V and 24V. The halogen lamp is made of tungsten, but it is enclosed in a smaller quartz glass shell. Because the glass is very close to the filament, if it's made by normal glass, it will melt very easily. The gas in the glass is composed of different gases. These gases have a very interesting feature. They are combined with tungsten vapor. If the temperature is not high enough, the halogen gas combines with the tungsten vaporization and redeposition of the filament. This cycle makes the filament can last more time. Halogen bulb is hotter than a normal bulb.
Auto Halogen Lamps
Auto Halogen Lamps,Rainbow Halogen Auto Lamp,Blue Halogen Auto Lamp,Golden Halogen Auto Lamp
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