Rectifier Problem

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padupoi Commentator Join Date: Feb 2010 Posts: 61	Rectifier Problem 06/10/2010 10:05 AM
	hi frnds.....................im in a big problem of solving an equation.can any one help me..... 1135.6sin(x-77.34)-145+2376.8e^(-.2247x)=0 where x is end commutation angle of rectifier.. __________________ padupoi
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mjb1962853 Guru Join Date: Jan 2008 Location: NY Posts: 1207 Good Answers: 119	#1 Re: Rectifier Problem 06/10/2010 8:02 PM
	Did you omit an "i" or "j" as part of the exponential function?
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kvsridhar Guru Join Date: Sep 2009 Location: Temporarily at Ashburn, VA Posts: 2744 Good Answers: 164	#2 Re: Rectifier Problem 06/10/2010 9:05 PM
	While i have absolutely no idea of this area, is it not a simple equation ? i get X ≈ 250..maybe i goofed somewhere in the excel formula...please let me know ... __________________ Nothing worthwhile can ever be taught, it can only be learnt.
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padupoi Commentator Join Date: Feb 2010 Posts: 61	#4 In reply to #2 Re: Rectifier Problem 06/10/2010 9:39 PM
	ya its correct x=250.............actually the accurate ans is 230,but 250 is not bad ,it can give correct ans to sme extent __________________ padupoi
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kvsridhar Guru Join Date: Sep 2009 Location: Temporarily at Ashburn, VA Posts: 2744 Good Answers: 164	#5 In reply to #4 Re: Rectifier Problem 06/10/2010 10:16 PM
	Are you sure of 230? Here are my excel results... Please comment. __________________ Nothing worthwhile can ever be taught, it can only be learnt.
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padupoi Commentator Join Date: Feb 2010 Posts: 61	#6 In reply to #5 Re: Rectifier Problem 06/10/2010 10:20 PM
	ya Im sure,but how did u do that..... can u help me to solve this using 991MS scientific calc __________________ padupoi
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kvsridhar Guru Join Date: Sep 2009 Location: Temporarily at Ashburn, VA Posts: 2744 Good Answers: 164	#7 In reply to #6 Re: Rectifier Problem 06/10/2010 10:31 PM
	i use excel, as shown in this image. __________________ Nothing worthwhile can ever be taught, it can only be learnt.
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padupoi Commentator Join Date: Feb 2010 Posts: 61	#3 Re: Rectifier Problem 06/10/2010 9:34 PM
	no friend i didnt miss any i or j __________________ padupoi
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mjb1962853 Guru Join Date: Jan 2008 Location: NY Posts: 1207 Good Answers: 119	#8 Re: Rectifier Problem 06/10/2010 11:27 PM
	Is X in radians or degrees? This appears to be a sinusoid, with a DC offset, and an added exponentially decaying transient. There seems to be an infinite number of solutions, unless the range is bounded. If I am wrong, please explain how.
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padupoi Commentator Join Date: Feb 2010 Posts: 61	#9 Re: Rectifier Problem 06/10/2010 11:53 PM
	ya, you are correct,v can juz predict the range of values,and it is of sme transients and DC offset. can we use numerical iterative methods to solve this? __________________ padupoi
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kvsridhar (3); mjb1962853 (2); padupoi (4)

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