FM and AM Circuit Difference

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adlfurball Associate Join Date: Jun 2012 Posts: 44	FM and AM Circuit Difference 03/25/2013 6:04 AM
	Hi everyone. I have been searching all over the internet. I found the circuits for FM and AM transmitter and found no difference. Can anyone explain how these 2 circuits differ for each other? As both have different way to modulate the signals.
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PWSlack Guru Join Date: Jan 2007 Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on. Posts: 32175 Good Answers: 839	#1 Re: FM and AM circuit difference 03/25/2013 6:10 AM
	Using a visible light analogy: an AM signal's brightness varies with modulation while the colour stays the same. an FM signal's colour varies with modulation while the brightness stays the same. so the electronics for the circuits must surely differ in some way? __________________ "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
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Tornado Guru Join Date: May 2009 Location: Richland, WA, USA Posts: 21017 Good Answers: 795	#2 In reply to #1 Re: FM and AM circuit difference 03/25/2013 6:14 AM
	Plus ça change, plus c'est la mème chose. Excuse my French. __________________ In vino veritas; in cervisia carmen; in aqua E. coli.
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RAMConsult Guru Join Date: May 2007 Location: NYC metropolitan area. Posts: 3230 Good Answers: 444	#3 Re: FM and AM Circuit Difference 03/25/2013 10:36 PM
	The block diagrams look the same; Modulator, Oscillator, Final amplifier; the difference lies in the way the audio affects the carrier frequency. For more info check out the ARRL Handbook. __________________ “Tell me and I forget. Teach me and I remember. Involve me and I learn.” Ben Franklin.
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adlfurball Associate Join Date: Jun 2012 Posts: 44	#4 In reply to #3 Re: FM and AM Circuit Difference 03/26/2013 7:27 AM
	YO, dude. Thanks man. I think ur link directed me into the right direction. :D
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