000			02038nam a2200241 a 4500
001			vtls000037631
003			KUKTEM
005			20251114204456.0
008			090610t2008 my a f m 000 0 eng d
020			_aTHE0006180(Local)
039		9	_a201905151707 _baida _c201107132243 _dVLOAD _c200908141628 _dVLOAD _c200908141601 _dVLOAD _y200906101649 _zida84
040			_aUMP
090			_aTJ223.P76 K43 2008 rs Bc.
100	0		_aKhairi Khalib
245	1	0	_aMicrocontroller based SMPS protection / _cKhairi Bin Khalib
246	3		_aMicrocontroller based SMPS protection _h[electronic resource]
260			_aKuantan, Pahang : _bUMP, _c2008
300			_a87 p. : _bill. ; _c30 cm. + _e1 computer disc
502			_aProject paper (Bachelor of Electrical Engineering (Power system)) -- Universiti Malaysia Pahang - 2008
520	3		_aThis project have 3 main objectives to achieve, first the project should be able to protect DC load equipment from over voltage from their maximum voltage value or lower voltage from their minimum value. Second it should be able to protect DC load equipment from over current form their maximum current value or lower current from their minimum value. Third the voltage and current protection value are free to set by user. Simple methodology for this project is when the protection circuit detects any high or low voltage and current from power supply output that supplied to the load, it will stop the Pulse-width modulation (PWM) signal output. Sensing circuit will detect any voltage and current alteration output from power supply. Using the PIC microcontroller (PIC 18F4550), it will control the PWM signal output. The PWM output signal can be use for the power supply switching circuit. If the PWM signal stops, the operation for the power supply also will stop. Controlling the PWM signal will ensure that we can control the power supply whether want to turn it on or off.
650		0	_aProgrammable controllers
999			_aVIRTUA40 _c2675 _d2681
999			_aVTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5200*6500*9992