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ac voltage controller using triac and diac


Posted by:
Created at: Sunday 14th of October 2012 03:51:04 AM
Last Edited Or Replied at :Sunday 06th of January 2013 03:44:43 AM
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I ..................[:=> Show Contents <=:]



conclusion for ac or dc voltage regulator using scr


Posted by:
Created at: Saturday 13th of October 2012 01:21:18 PM
Last Edited Or Replied at :Saturday 13th of October 2012 02:12:49 PM
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send me the 1.conclusion for ..................[:=> Show Contents <=:]



power factor improvement of single phase ac voltage controller employing extinction angle control technique ppt


Posted by:
Created at: Wednesday 03rd of October 2012 06:49:51 AM
Last Edited Or Replied at :Wednesday 03rd of October 2012 06:49:51 AM
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Power factor improvemen..................[:=> Show Contents <=:]



OPTIMAL VOLTAGE REGULATOR PLACEMENT IN A RADIAL DISTRIBUTION SYSTEM USING FUZZY LOGIC


Posted by: sriramasekhar
Created at: Saturday 10th of December 2011 05:12:41 AM
Last Edited Or Replied at :Sunday 11th of December 2011 10:31:01 PM
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pls send me the ppt ofOPTIMAL VOLTAGE REGULATOR PLACEMENT IN A RADIAL DISTRIB..................[:=> Show Contents <=:]



A METHOD FOR POWER QUALITY IMPROVEMENT IN CLASSICAL AC VOLTAGE CONTROLLER


Posted by: seminar class
Created at: Thursday 14th of April 2011 04:18:06 AM
Last Edited Or Replied at :Thursday 14th of April 2011 04:18:06 AM
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oad.
The series connected transistors regulate the power delivered to the load, and the parallel ones provide the freewheeling path to discharge the stored energy when the series ones are turned off.
The fundamental voltage can be adjusted according to the required duty cycle, i.e., the ratio of on-time ton to a modulation period T,. The harmonics are suppressed in proportion to the difference between the frequencies of the ac line voltage and the modulation
This form of PWM control produces an approximately sinusoidal load current for inductive loads even without filters
MAIN CONNECTIO..................[:=> Show Contents <=:]



8 CANDIDATE QUIZ BUZZER USING 8051 MICRO CONTROLLER AT89C51


Posted by: seminar class
Created at: Friday 04th of March 2011 01:40:02 AM
Last Edited Or Replied at :Monday 10th of March 2014 06:13:18 AM
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bridge. The load resistance is connected between the other two ends of the bridge.
For the positive half cycle of the input ac voltage, diodes D1 and D3 conduct, whereas diodes D2 and D4 remain in the OFF state. The conducting diodes will be in series with the load resistance RL and hence the load current flows through RL.
For the negative half cycle of the input ac voltage, diodes D2 and D4 conduct whereas, D1 and D3 remain OFF. The conducting diodes D2 and D4 will be in series
with the load resistance RL and hence the current flows through RL in the same direction as in the previous half ..................[:=> Show Contents <=:]



acvoltagecontroller


Posted by: tmplsureshkumar
Created at: Saturday 06th of March 2010 11:27:27 PM
Last Edited Or Replied at :Monday 08th of March 2010 04:46:08 AM
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Phase Angle Control in Triac based Single phase AC RegulatorsA Study


Posted by: computer science technology
Created at: Monday 18th of January 2010 11:43:53 AM
Last Edited Or Replied at :Thursday 17th of March 2011 01:13:37 AM
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4
DIAC
A Diac is equivalent to two diodes connected back to back. Also, it is

a bidirectional device, in contrast to the diode, which is a

unidirectional device, having reverse blocking characteristic,

preventing the flow of current from Cathode to Anode. So, when it

(diac) is in conduction mode, current flows in both directions (forward

and reverse). This switching device is called as DIAC (DIode AC

switch), with the circuit symbol shown in Fig. 28.1. The two terminals

of the diac are designated as and , shown in the same figure. These are

similar to the ter..................[:=> Show Contents <=:]



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