Rubber cable is also rubber sheathed cable. As its name implies, it is a wire and cable with various rubbers or thermosetting elastomers with equivalent performance as the insulation and sheath foundation. Rubber Cable,Rubber Welding Cable,Outdoor Copper Wire Rubber Cable,Flexible Rubber Sheathed Cable Ruitian Cable CO.,LTD. , https://www.hbruitiancable.com
National Semiconductor Corporation announced on October 24 that it has introduced a common-positive current mode high-brightness LED driver with pulse width modulation (PWM) dimming control. The LM3433 LED driver is the latest addition to National's PowerWise energy-efficient series, which can drive high-power, high-brightness LEDs, especially for screen backlight systems, projectors, and solid-state lights.
National's LM3433 LED driver can support a common anode backlight system design, and the common anode design has the advantage of enhancing the heat dissipation capability of the display, thus opening up new applications for LEDs, such as large-screen LCD TVs. Stable and reliable LEDs can be used. In addition, the increasingly compact "pocket projector" has also begun to use LEDs, because LEDs have a wider color gamut than the ultra-high-performance bulbs currently in use, and the performance is more reliable and longer life. Luminus' PhtalLight LED is a new generation of LED products for point source high brightness lighting systems. The PhlatLight red-green blue LEDs on display at National's booth can output more than 3,000 white lumens.
LM3433LED Driver Specifications
National's LM3433 is a fixed-on-time DC-DC step-down constant current regulator that can output a negative constant current to drive high-power, high-brightness LEDs. The output of a negative voltage constant current allows the anode of the LED to be directly connected to the ground reference chassis, thereby increasing the heat dissipation capability of the heat sink. Because the chip uses a shorter fixed on-time structure, the system can use small external passive components without the need for an output capacitor. In addition, the LM3433 has two current control modes that adjust the brightness of the LEDs. The analog current control mode uses the input signal to regulate the current to compensate for different brands of LEDs. Another current control mode uses a logic level dimming control input signal to control the brightness of the LED in a PWM control. The PWM control mode uses parallel switches to connect the LEDs together, allowing the PWM dimming control frequency to be as high as 40KHz. The chip also features other features such as thermal shutdown protection, VCC undervoltage lockout, and logic level shutdown mode.
Price and availability
The LM3433 is available in a 24-pin LLP package. The LM3433 is available in 1,000-unit quantities and is priced at $2.25 each. Reading era
The most attention to the lighting of the bridge lighting business products detonated the National Games experts talk about the night scenes of the four major cities
1 
Because of its unique flexibility, rubber sheathed cables are very suitable for use in indoor and outdoor environments, including wet and even water conditions. They are usually used on mobile electrical equipment. They are suitable for electrical and pneumatic connection or wiring with AC rated voltage of 300V/500V and 450V/750V below.
Rubber sheathed cables are used by products in many fields due to their unique mechanical and physical properties, so they are classified into many categories, such as mobile universal rubber sheathed cables, electric welding machines, electric power, marine, mining, wind energy, nuclear energy, etc., among which mobile universal rubber sheathed cables and mining cables are widely used.
Advantages
1. Good water resistance, less air permeability.
2. It can be mixed with other rubber or plastics to improve the performance of rubber.
3. Good heat resistance. The heat resistance of rubber is better than that of natural rubber and styrene butadiene rubber.
4. The physical and mechanical properties are average. The mechanical properties of rubber without reinforcing agent are poor.
5. It has excellent oil resistance and solvent resistance. The higher the content of acrylonitrile, the better the oil resistance.