Search results 15274 items matching your search terms. Filter the results Item type Select All/None Page Collection GLD Company Event Folder New items since Yesterday Last week Last month Ever Sort by relevance date (newest first) alphabetically Figure 2 - Some standard heatsinks out of a broad range. Located in media Figure 1 - Luminous flux vs ambient temperature for red LED by constant current (according to documents from the company Lumileds ). Located in media HOW IT WORKS: Conventional and magnetic refrigeration cycles use different physical effects to cool things off. [Top] When a gas is compressed (2), it heats up, but if it is cooled and then allowed to expand (3), its temperature drops much lower than it was originally (4); this principle keeps food in your home refrigerator cool. But a magnetocaloric material [bottom] heats up when magnetized (b); if cooled and then demagnetized (c), its temperature drops dramatically (d). Located in media HOW IT WORKS: Conventional and magnetic refrigeration cycles use different physical effects to cool things off. [Top] When a gas is compressed (2), it heats up, but if it is cooled and then allowed to expand (3), its temperature drops much lower than it was originally (4); this principle keeps food in your home refrigerator cool. But a magnetocaloric material [bottom] heats up when magnetized (b); if cooled and then demagnetized (c), its temperature drops dramatically (d). Located in media Figure 4: Current and temperature dependence of the WPE of a red Dragon LED (measured by Mentor Graphics MicReD). Located in media Figure 3: Sketches of some mainstream power LED packages. Located in media Figure 2: Junction-to-X thermal resistance calculated from a temporal difference of the junction temperature and the power dissipated in the device. Located in media Figure 1: Light output depends on ‘everything’. Located in media LED light source for farming is getting popular for energy saving and improvement of product quality. Located in media Testing LEDs abilities to lower the costs of lighting greenhouses. Located in media < Previous 10 items 1 ... 1244 1245 1246 1247 1248 1249 1250 ... 1528 Next 10 items > Subscribe to an always-updated RSS feed.
