Q:Can normal LED fluorescent tubes be used in a vacuum?

Both kinds of light-emitting device itself can be used in vacuum environment. But they alone is difficult to work and need to match the other electronic components and circuit, LED to match driver circuit (); Fluorescent lamp or fluorescent lamp should match the inductance ballast or electronic ballast circuit components, such as ability to work, some of these additional circuits and components can work in a vacuum, some components may not be suitable for vacuum work, some will spread in a vacuum, could destroy the vacuum environment, some hot components in a vacuum, also not easy heat dissipation

Q:How to choose daylight lamp? What is the light bulb specification?

The fluorescent lamp shines after normal. Due to alternating current (ac) continuously through the ballast coil, the coil of self induction electromotive force, self inductance electromotive force blocking the current in the coil change, ballast step-down current-limiting role at this moment, the current is stable in the range of the rated current of the lamp tube on both ends of the voltage is stable within the rated voltage range. Because the voltage is lower than the ionization of the starter, so is no longer the starter in parallel at each end of the work, daylight lamp specifications: general search said 50 cm, 100 cm, 120 cm. Fluorescent lamp structure and function: each has a filament on both ends of the fluorescent lamp, inside the tubes filled with tiny amounts of argon and the thin mercury vapor, tube coated with phosphor, on the wall between the two filament gas when conducting an ultraviolet, the fluorescent powder soft light.

Q:Does the installation of LED fluorescent bulbs need to be positive and negative

It depends on whether your power is external, or is it built in, so if you have an external one, you don't have to have it built in,

Q:How does the lamp line connect

If the lamp is ordinary lamp, that is the kind of tubes, tube wall coated with phosphor is need ballast, if it is a led lamp, does not need ballast, later I'll detail

Q:Does the LED lamp need to be a national compulsory certification

Some of them need to be CCC, but most of them don't need to be CQC. This is the latest national standard. The last time I went to a certification company to listen to the lectures

Q:Now there is no led lighting, just like the fluorescent light bulb, which is universal

Yes, on some treasure, I have just changed a batch of such tubes, no more than 8 yuan or so.

Q:Is there a ballast in the LED lamp? Or do you need a ballast?

Fluorescent lamp tube is need to use ballast, whether inductance type or electronic type, need to give lamp tube a high-voltage pulse to light. Leds, unlike leds, need a completely constant current to drive it, so the LED driver is a driver for constant current constant pressure.

Q:Are led fluorescent tubes not available for lighting?

It is also possible to use a stent without a stent, usually with a negative level on the positive side of the connection

Q:Brightness, longevity The current led lighting tube is 90-100lm/watt, and the life span is more than 20,000 hours, and the chips and power supply should be paid attention to. We adopt a 3-ampere, long power supply to ensure the quality of the lamp.

You are not professional can not calculate, because of the brightness of the LED is unknown, the 1 w LED brightness lm from 10 to 110 lm, can achieve the best LED 1 w = 130 lm, but on the market generally between 60-90 lm, which is 15 wled only 30 to 45 w energy-saving daylight lamp brightness, only 180 w to 270 w old incandescent lamp brightness. The best one we produce is 15W = 60W daylight saving tube. This one depends on the light, and you can see it visually.

Q:Led lamp tube t8 good or t5 good

The specification of fluorescent lamp is the diameter of tube, length. Look at your lighting requirements, T8 pipe size, of course, the light effect will be better, the same length of lamp tube T8 will be more than twice as bright as T5, and the brightness is much better. The quality of the lamp is not so good at present. The main view is lamp tube with light, electric power and heat dissipation processing.