In 1968, HP produced red LED illuminators (wavelength 660nm), and then appeared yellow-green (wavelength 570nm), blue (wavelength 470nm) and pure green (wavelength 525nm) for display screens, but currently due to high The blue and pure green semiconductor wafer manufacturing technology of brightness is mainly in the hands of a few companies such as Japan and the United States, resulting in relatively expensive prices. The LED luminescent materials used in the display screen have the following forms:
1LED light (or single light)
Generally, it consists of a single LED chip, a reflective bowl, a metal anode, and a metal cathode, and is surrounded by an epoxy resin casing having a light condensing ability. One or more (different color) single lamps can be used to form a basic pixel, which is mostly used for outdoor displays due to high brightness.
2LED dot matrix module
The light-emitting matrix is ​​composed of a plurality of wafers and is encapsulated in a plastic case with an epoxy resin. It is suitable for row and column scanning drive, and it is easy to form a high-density display screen, which is mostly used in indoor display.
3 SMD LED Lights (or SMDLEDs)
It is a package of LED light-emitting type, which can be used for indoor full-color display, which can realize single-point maintenance and effectively overcome the mosaic phenomenon.
Mineral Insulated cables, or simply Mica cables, are cables in which
conductors or wires are enclosed by a metal jacket and insulated with
hard-packed mica. It is a variety of electrical cable made from copper
conductors inside a copper sheath, insulated by mineral mica powder. Mineral
Insulated cable is a specialized type of cable used in high temperatures
or harsh environmental conditions because it has low flammability, even
when operating at high temperatures. The maximum continuous operating temperature is
250℃. The cable can supply with power continuously for 3 hours
at 950-1000℃. The mineral fillings in cables provide excellent non-reactive
insulation. It resists oxidation and enables precise measurement.
Advantages:
- Low flammability
- Resists oxidation
- Easy installation
- Long service life
- High insulation resistance
- High mechanical strength
- Excellent shield performance
- Exceptional vibration resistance to protect the mechanical conditions of the internal conductor wires
- Can be drawn down to extremely small diameters, providing fast response times when used in temperature sensors
- Can be formed/bent in the field without causing short circuits between the sheath and the internal wires, or between wires
- Can be easily sealed around when used as extension or control cables in critical environments
Application:
- Nuclear or hydrocarbon based energy plants
- Emergency power systems
- Exposure to dangerous gasses
- Emergency lighting systems
- Public buildings such as theatres, cinemas, hotels
- Hospital operating rooms
- Fire alarm systems
- Transport hubs (railway stations, airports etc.)
- Tunnels and mines
- Electrical equipment in hazardous areas
- And many more...
Welcome to visit our factory to learn more about us. If you have any questions, please feel free to contact us.
Mineral Insulated Cable,Fire Resistance Mica Cables,Highly Fireproof Power Cables,Metallic Sheathed Power Cables
Smartell Technology Co.,Ltd , http://www.liencable.com