000			02030nam a2200241 a 4500
001			vtls000037823
003			KUKTEM
005			20251114204358.0
008			090615t2008 my a f m 000 0 eng|d
020			_aTHE0006916(Local)
039		9	_a201906131045 _baida _c201107132137 _dVLOAD _c200908141629 _dVLOAD _c200908141603 _dVLOAD _y200906151228 _zida84
040			_aUMP
090			_aTK7871.89.L53 Z85 2008 rs Bc.
100	0		_aMohd Zulkifli Azizan Sinnappan
245	1	0	_aUMP version LED bulb / _cMohd Zulkifli Azizan Sinnappan
246	3		_aUMP version LED bulb _h[electronic resource]
260			_aKuantan, Pahang : _bUMP, _c2008
300			_a59 p. : _bill. (some col.) ; _c30 cm. + _e1 computer disc
502			_aProject paper (Bachelor of Electrical Engineering (Electronics)) -- Universiti Malaysia Pahang - 2008
520	3		_aThe 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.
650		0	_aLight-emitting diodes
999			_aVIRTUA40 _c986 _d992
999			_aVTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5200*6500*9992