【 Weak current College 】 projectors supplies protect six note---Power By 【 China power house network 】

Projection projector bulb is an important supplies, prices are more expensive, how to effectively protect the bulb is every user must be taken seriously. To this end, we will offer the following 6 is recommended, in the hope of providing our users with the help of the projector, the effective protection of the good projector bulb.

1, power switch interval of 5 minutes

Because the projector power supply using a ratio of pulse width modulation method on a buck and regulated power supply, stable power handling, and in dealing with these links, the projector power of power switching valve and the transformer will work at a high frequency, switch tube in frequent switching process will naturally appear considerable switching losses, the loss will be transferred into heat rays, so that the temperature inside the projector, the lamp itself emits heat accumulation in projector internal narrow space, you can easily make the bulbs produce explosive phenomena. In addition to frequent switching power supply, also on bulb produces a large storm, bulb that can easily be damaged. In order to avoid damage of these bulbs, we try not frequently switch the projector, but also remember, if you close the projector to turn, you must wait 5 minutes.

2, projection environment not reflective

Many people often mistake that so long as the brightness of the light bulb to improve high enough, the drop shadow effect will certainly be very clear and easy to distinguish; in fact, the drop shadow effect is good or bad, and the relationship between the bulb brightness has, and the light bulb work environment, work environment light intensity affect the drop shadow effect. So we have to lay out a good projection work environment, as much as possible to avoid the light bulb work on too strong, this is due to the too strong ambient light may cause the lamp brightness effect become worse; so if you want a better drop shadow effect, we may wish to install the curtains in the room in order to block the outdoor light; room walls, the floor should use should not be reflective of the material, because these details will let the lamp brightness effect even more.

3. ensure that the power of "identity"

In order to prevent the bulb exploded or does not match the working power, the projector on its connection to power source specification also had strict rules. Users connect to a projector to a power outlet, it should be noted that the supply voltage of nominal value, the machine's ground and power polarity, and pay attention to the grounding. This is because when the projector and the signal source (such as PC) is connected to two different power, may exist between the zero line high potential difference. When you plug the signal line or other circuit will occur between the spark plugs and Sockets, damage to the signal input circuit, not only may cause the lamp does not function correctly, but also may damage the projector, serious also can cause fires. Therefore, we'd better use random supplied power cord, ensure the power cord connected socket to grounding reliable.

4, notice the order of the switching power supply

As part of the burden of the power supply of the projector to the projector internal circuitry and projector lamp power supply, if not in the correct order shutting down power to the projector, the lamp may and projector power circuit parts together close to projector internal fan power will stop working, so the bulb and the projector in the course of a large number of calories can not be timely by fans from, is likely to cause the bulb exploded. Many have just begun to touch on projector, frequently very naturally frequently switch projector, projector on its power on and off is strictly required, otherwise you may damage the light bulb or vote. Typically, when we turn on the projector, you should first powered on, and then press and hold the projector LAMP led in the control panel until you see the green light does not Flash. Shutdown cannot directly cut off power supply and should hold the LAMP indicator until the green light is not flashing, the projector until the cooling fan to stop spinning, then cut off the power. Therefore the correct switch the projector's power on the bulb's lifetime, and projector internal parts of life.

5, each time the work is not more than four hours

If the bulb to work long hours, the projector internal imaging system may emit large amounts of heat, the heat will cause the projector internal temperature quickly grow as the projector bulb wall of quartz in high temperature conditions will result in lost through phenomena, which have white spots, so losing significant barrier light permeable Department so that the local regional temperature anomalies caused by loss-of-rise, which in turn further expanded through the region, allowing the rapid decay of luminance, and is likely to cause the bulb exploded. Therefore, as far as possible, we must note that every time the projector works duration must not exceed four hours.

6, UHP lamp advantages

UHP bulb is at present the projector of the more popular a good cold light source, its advantages are long life, can be generally more than 4000 hours of normal use, and brightness falloff is very small; the disadvantage is that the patent to Philips UHP technology monopoly, higher prices.