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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,
arly, when S3 is pressed, the delay is decreased by 1 ms and the load current increases by 10 percent. The minimum delay is 0 ms, which means a full positive cycle is applied. ..................[:=> 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,
- to get a good linear relationship between the phase angle and the delivered output power.
Basically, the zero-crossing detector circuit interrupts the microcontroller after every 10 ms. This interrupt commands the microcontroller to generate some delay (in the range of 1 ms to 9ms). The user can increase or decrease the delay in intervals of 1 ms using switches. The SCR is then fired through the opto-coupler. This repeats after every 10 ms.
CIRCUIT DESCRIPTION
The complete circuit is divided into two sections:
1. The zero-cross detector section
2. The control section
The zero..................[:=> Show Contents <=:]



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