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PHASE-ANGLE CONTROL OF SCR USING AT89C51


Posted by: seminar class
Created at: Tuesday 22nd of March 2011 12:35:11 AM
Last Edited Or Replied at :Monday 22nd of April 2013 01:54:25 AM
phase angle control using scr , thyristor phase angle, scr zero crossing current detector , thyristor angle control, phase ange control in phase controlled rectifiers , zero crossing detector for 230v, firing angle pdf ppt , thyristor firing angle through microprocessor, ppt for firing of thyristor based on microcontroller , use scr to phase shift for controlling current, how to genarate firing pulses for scr , phase angle control of scr, scr zero crossing detector , microcontroller based 3ph firing angle control fundamentals, thyristor fire angle controller with microcontroller , zero crossing detector based scr firing, standalone zero crossing detector , at89c51,
of the regulator IC, while diode D6 protects the regulator IC in case their input is short to ground. LED5 acts as the Power-on indicator and resistor R5 limits the current through LED5.
This regulated 5V is also used as biasing voltage for both transistors (T1and T2) and the control section. A pulsating DC voltage is applied to the base of transistor T1 through diode D5 and resistors R1 and R2. When the pulsating voltage goes to zero, the collector of transistor T1 goes high. This is used for detecting the pulse when the voltage is zero. Finally, the detected pulse from ‘C’ is fed to th..................[:=> Show Contents <=:]



PHASE-ANGLE CONTROL OF SCR USING AT89C51


Posted by: seminar class
Created at: Tuesday 22nd of March 2011 12:35:11 AM
Last Edited Or Replied at :Monday 22nd of April 2013 01:54:25 AM
phase angle control using scr , thyristor phase angle, scr zero crossing current detector , thyristor angle control, phase ange control in phase controlled rectifiers , zero crossing detector for 230v, firing angle pdf ppt , thyristor firing angle through microprocessor, ppt for firing of thyristor based on microcontroller , use scr to phase shift for controlling current, how to genarate firing pulses for scr , phase angle control of scr, scr zero crossing detector , microcontroller based 3ph firing angle control fundamentals, thyristor fire angle controller with microcontroller , zero crossing detector based scr firing, standalone zero crossing detector , at89c51,
er, regulated power supply and zero-crossing detector. The 230V AC mains is stepped down by transformer X1 to deliver the secondary output of 9V, 500mA. The transformer output of 9v, 300mA. The transformer output is rectified by a full-wave bridge rectifier comprising diodes D1 through D4
And then regulated by IC 7805 (ic3). Capacitors C2 and C3 are used forpassing the ripples present in the regulated 5V power supply. A capacitor above 10µF is connected across the output of the regulator IC, while diode D6 protects the regulator IC in case their input is short to ground. LED5 acts as the Pow..................[:=> Show Contents <=:]



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