What is Cold Cathode UV?
Cold Cathode Germicidal Ultraviolet Lamps, Tubes and Bulbs STER-L-RAY® Cold Cathode germicidal lamps are instant starting and utilize a large cylindrical cathode instead of a tungsten filament. Cold cathode germicidal lamps have favorable operating characteristics at reduced temperatures.
Is led cold cathode?
When considering using a Cold Cathode Fluorescent light bulb for your project, keep in mind that they can be used as a direct replacement for incandescent bulbs in many applications, and will reduce energy costs in such situations drastically.
What is the capacity of fluorescent light?
Voltage of a Fluorescent Tube
| Bibliographic Entry | Standardized Result |
|---|---|
| Goldwasser, Samuel M. Sam’s F-lampFAQ. Version 1.88, 1999. | 100–175 V |
| Fluorescent Tube and Switching Ballasts. Transtronic. 1994-2001. | 93 V |
| Volantis, David Thomson. Fluorescent Tube Voltage Source. 2001. | 152 V |
What is the illumination efficiency of fluorescent tube?
The efficiency of fluorescent tubes is much higher than that of incandescent lamps, which means more input power can be converted to visible light by using fluorescent tubes than incandescent lamps. Fluorescent lamps use 25%-35% of the energy used by incandescent lamps to provide the same amount of illumination.
What is cold cathode and hot cathode?
A cold cathode is a cathode that is not electrically heated by a filament. A cathode may be considered “cold” if it emits more electrons than can be supplied by thermionic emission alone. The other type of cathode is a hot cathode, which is heated by electric current passing through a filament.
What is the function of cold cathode?
A cold cathode lamp functions by using electricity emitted from cathodes to excite mercury vapors using the process of inelastic scattering in order to create fluorescence, just as a typical linear fluorescent does.
Is neon a cathode cold?
For many people, the most easily identifiable example of a cold cathode lamp is the neon sign.
Will T8 fit T12?
T8 tubes are simply 1 inch in diameter versus the 1.5 inch diameter of T12 tubes. In an effort to make LED tube lights compatible with the internal dimensions of most fixtures, you will find that most LED tube lights feature a T8 or 1 inch diameter. They can indeed be used in T12 fixtures.
How many lumens is a 40 watt fluorescent tube?
2300 lumens
A 40-watt fluorescent tube, for example, is rated around 2300 lumens. To replace it with the same intensity LED, just look for one that rates around 2300 lumens. Of course, not every fluorescent, incandescent, metal halide, etc., lamp will give its lumens.
Which electric discharge lamp gives highest lumens per watt?
Mercury vapor lamps are more energy efficient than incandescent and most fluorescent lights, with luminous efficacies of 35 to 65 lumens/watt.
Is a cold cathode lamp?
A cold cathode fluorescent lamp (CCFL) is a type gas-discharge lamp similar to linear fluorescent or compact fluorescent lamps. They are known for high efficiency, long rated life, and their ability to start in cold conditions.
What is an indirectly heated cathode?
Indirectly heated cathode : In this type, the filament is not the cathode but rather heats a separate cathode consisting of a sheet metal cylinder surrounding the filament, and the cylinder emits electrons. Indirectly heated cathodes are used in most low power vacuum tubes.