Search results
Results From The WOW.Com Content Network
Typical LED package including thermal management design Thermal animation of a high powered A19 sized LED light bulb, created using high resolution computational fluid dynamics (CFD) analysis software, showing temperature contoured LED heat sink and flow trajectories Thermal animation of a high power density industrial PAR 64 LED downlight heat sink design, created using high resolution CFD ...
Temperature dependence: LED performance largely depends on the ambient temperature of the operating environment – or thermal management properties. Overdriving an LED in high ambient temperatures may result in overheating the LED package, eventually leading to device failure. An adequate heat sink is needed to maintain long life. This is ...
For example, funded by the U.S. Department of Defense, research has been underway using high-power density gallium nitride transistors with synthetic diamonds as thermal conductors. [ 10 ] [ 11 ] Also, some heat sinks are constructed of multiple materials with desirable characteristics, such as phase change materials , which can store a great ...
Thermal management of high-power LEDs is required to keep the junction temperature of the LED device close to ambient temperature, since increased temperature reduces light output and can cause catastrophic failure. LEDs use much less power for a given light output, but they do produce some heat, and it is concentrated in a very small ...
Thermal management can mean: Thermal management (electronics) Thermal management of high-power LEDs; Thermal management of spacecraft; Exhaust heat management of internal combustion engines; Thermoregulation in biological organisms; Thermostat, a thermal control and management device for heating and cooling systems
The numerical methods such as FEM or FDM derive a matrix equation as shown in the previous section. To solve this equation faster, a method called Model order reduction can be employed to find an approximation of lower order. This method is based on the fact that a high-dimensional state vector belongs to a low-dimensional subspace .
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
The superluminescent diode was reported for the first time by Kurbatov et al. (1971) [2] [3] and Lee, Burrus, and Miller (1973). [4] [3] By 1986 Dr. Gerard A. Alphonse at RCA Laboratories (now SRI International), invented a novel design enabling high power superluminescent diodes. [5]