02030nam a2200241 a 4500 vtls000037823 KUKTEM 20251114204358.0 090615t2008 my a f m 000 0 eng|d THE0006916(Local) 201906131045 aida 201107132137 VLOAD 200908141629 VLOAD 200908141603 VLOAD 200906151228 ida84 UMP TK7871.89.L53 Z85 2008 rs Bc. Mohd Zulkifli Azizan Sinnappan UMP version LED bulb / Mohd Zulkifli Azizan Sinnappan UMP version LED bulb [electronic resource] Kuantan, Pahang : UMP, 2008 59 p. : ill. (some col.) ; 30 cm. + 1 computer disc Project paper (Bachelor of Electrical Engineering (Electronics)) -- Universiti Malaysia Pahang - 2008 The conventional bulb (incandescent and fluorescent) are considered as the only alternative right now to produce bright light, however bulb that use light-emitting diodes (LEDs) – which contain no mercury neither produce CO2 - are quickly emerging as a challenger. LED is the type of lighting, which is most commonly use to illuminate signs, signals and displays but is rapidly evolving to provide light for general illumination. This project is focusing to design and build UMP version LED bulb. It consist the module of the transformer, rectifier, battery backup and LED bulb. The transformer is used to step-down the AC voltage from the main supply and the output of the transformer will be rectified to DC voltage by the rectifier. The IC voltage regulator provides the desired supply to the LED bulb by limiting the current and voltage to avoid the LED bulb from damage. When power failure is occur in the system, battery backup will act as main supply to the LED bulb. The LED bulb consist several white LED which is grouped together to produce bright light. Light-emitting diodes 0 0 0 1 20000 20000 2019-09-04 0 TK7871.89.L53 Z85 2008 rs Bc. 0000037390 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 1 20000 20000 2019-09-04 0 CD 3259 | TK7871.89.L53 Z85 2008 rs Bc. 0000037391 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 986 992 VTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5200*6500*9992