LED flashlight is a new type of illumination instrument that uses light emitting diode as light sources, with merits of power-saving, long lifespan and high brightness. Immediately after White LED was invented, LED flashlight came into the market. Initially, WLED was only applied on part of military materials, daily uses of it were not widespread [...]
We’ve likely all experienced the bothersome inconvenience of having to change a light bulb located in a hard-to-reach place. Maybe a lofty porch light burns out, or a chandelier bulb dies. These can be difficult to get to, and many times they are lights that are left on for many hours throughout the day, so [...]
The Comparison of different Lamp Sources
LAMP COMPARISON CHART *
WATTS
LUMENS
LUMEN / WATT
min.START TEMP.
STARTUP TIME
RESTRIKE TIME
AVG. LIFETIME
COLOR TEMP.
INCANDESCENT
40w
480
12
-40°
instant
instant
1000 h
2700k
60w
890
15
-40°
instant
instant
1000 h
2700k
75w
1,200
16
-40°
instant
instant
1000 h
2700k
100w
1,700
17
-40°
instant
instant
1000 h
2700k
150w
2,550
17
-40°
instant
instant
1000 h
2700k
TUNGSTEN HALOGEN
35w
900
26
-40°
instant
instant
3500 h
3000k
50w
1300
26
-40°
instant
instant
3500 h
3000k
65w
1,700
26
-40°
instant
instant
3500 h
3000k
LED (white)
0.03-5w
18-115
-40°
instant
instant
50,000 – 100,000 h
2700-10,000k
COMPACT FLUORESCENT
PL13w
1,050
81
-20°
.5 to 5 sec.
1 sec.
10,000 h
2700-6500k
QUAD 28w
1,500
57
0°
.5 to 5 sec.
1 sec.
10,000 h
2700-6500k
CF26w
1,800
69
-20°
.5 to 5 sec.
1 sec.
10,000 h
2700-6500k
CF32w
2,400
75
-20°
.5 to 5 sec.
1 sec.
10,000 h
2700-6500k
CF42w
3,200
76
-20°
.5 to 5 sec.
1 sec.
10,000 [...]
By now there’s little doubt that LED-based light bulbs are the future, and while a lot of cool LED technology still needs to make its way from the lab to the store, it’s exciting to see that engineers are still finding new ways to squeeze more performance out of those semiconductor diodes. The latest breakthrough [...]
Molten aluminum body,stainless steel polishing or Aluminum alloy faceplate,waterproof tie-in,silica gel rubber airproof cover,arc poly angle refractable glass,durable,waterprllf,dustproof and no creepage. LED lamp-house,various colors compounding-form as single color,double colors,seven colors gradual changing and seven colors jumpy changing. Extensively applied in lighting of village,courtyard,downtown street,etc,bring splendid scenes to life.
Underground lamp: input voltage: AC220V/110V, protection grade: IP67, [...]
Since high power LEDs are more and more used in general lighting there is an increasing demand for off-line power supplies to drive these. Due to the VI characteristic of LED such a power supply must have a constant current output. The following article describes a PSU based on a Fairchild Power Switch (FPS™) that [...]
The application field of Solid state lighting, in the form of light emitting diodes (LEDs) has changed from traditional indicator functions to illuminator applications. With traditional light sources such as incandescent lighting, much of the energy required to generate visible light is dissipated as heat in the radiant beam of light. LED light sources do [...]
What Are Pixels and What is the Pitch?
Definitions of the LED Communication Terminology.
In this section are presented some short descriptions of the most common terms utilized on this website and in the LED visualization field in general. This list of terms and definitions doesn’t have any academic intent but more simply would like to put [...]
An LED driver is a self-contained power supply that has outputs matched to the electrical characteristics of your LED or array of LEDs. There are currently no industry standards, so understanding the electrical characteristics of your LED or array is critical in selecting or designing a driver circuit. Drivers should be current-regulated (deliver a consistent [...]
LED displays control system common failures
Failure phenomena
Reasons for failure
Failure analysis and solutions
1.The whole screen doesn’t light or appears pane
• if the controlling host machine has started • if the communication line is well plugged • if the sending card is well plugged • if the data line between the multi-media card and collecting card and [...]