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Difference between revisions of "Philips ML"
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These high pressure mercury vapour lamps are compact light sources that are viable for indoor as well as outdoor use. Good colour reproduction and a warm to neutral white colour appearance make these lamps suited for most applications except when efficiency or positioning limitations are taken into account. The lamp does not require any additional component, making the lamp very easy to install and operate. | These high pressure mercury vapour lamps are compact light sources that are viable for indoor as well as outdoor use. Good colour reproduction and a warm to neutral white colour appearance make these lamps suited for most applications except when efficiency or positioning limitations are taken into account. The lamp does not require any additional component, making the lamp very easy to install and operate. | ||
Slightly major drawbacks are the lamp's sensitivity to positioning and operating voltage, along with slightly lower than average service life, especially compared with modern lighting technology. The lamp's low efficiency is caused by the compromise of its internal construction. The warm light generated by the internal filament also comes with massive heat radiation, which is similar to typical tungsten lamps that were previously popular. It should be noted that, due to the lamp's construction, light output is not uniform, with noticeable segregation in colour and intensity between the center and tip of the lamp. Although this effect is not severe, it may be a slightly unpleasant effect in certain situations. | |||
The pleasant light is suited both as general lighting in homes as well as gardens or workshops. A good selection of lamps can be used if power consumption is not critical and a specific scene or effect is desirable. Unfortunately, especially in small spaces, the lamp can contribute to heating, which may be advantageous as well as undesirable, depending on application. Special care should be taken when cleaning the lamp as vibrations, dirt accumulation and improper handling can easily crack the bulb, especially on soft glass lamps. Any dirt present on the lamp may be trapped longer due to melting and subsequent adhesion to glass. This means that lamp cleaning has to be as thorough and careful as on old tungsten lamps. While the lamp has a very high output when started and slowly reduces on warm-up, with a corresponding change in light colour, it is not unpleasant. At the beginning most light is output by the internal incandescent fillament rather than the mercury discharge. Lamp restart in case of failure occurs in less than 2 minutes and is less unpleasant than on other high pressure discharge lamps. | The pleasant light is suited both as general lighting in homes as well as gardens or workshops. A good selection of lamps can be used if power consumption is not critical and a specific scene or effect is desirable. Unfortunately, especially in small spaces, the lamp can contribute to heating, which may be advantageous as well as undesirable, depending on application. Special care should be taken when cleaning the lamp as vibrations, dirt accumulation and improper handling can easily crack the bulb, especially on soft glass lamps. Any dirt present on the lamp may be trapped longer due to melting and subsequent adhesion to glass. This means that lamp cleaning has to be as thorough and careful as on old tungsten lamps. While the lamp has a very high output when started and slowly reduces on warm-up, with a corresponding change in light colour, it is not unpleasant. At the beginning most light is output by the internal incandescent fillament rather than the mercury discharge. Lamp restart in case of failure occurs in less than 2 minutes and is less unpleasant than on other high pressure discharge lamps. | ||