Amplitude Modulation: Sine Wave Carrier of 750kHz, 4.0V, Modulated by 3kHz, 0.5V

[NabeelIshaq]

Hi everyone, plx help me on this!

I've worked out frequency modulation but can't understand amplitude modulation ...

A sinusoidal carrier wave has a frequency of 750kHz and an unmodulated amplitude of 4.0V. The carrier wave is to be amplitude-modulated by a sinusoidal signal of frequency 3kHz and the amplitude 0.5V. Describe the modulated carrier wave.


Thnx in advance :)

 

[sophiecentaur]

The wording of the question makes it look an awful lot like homework.?

 

[schip666!]

Let me Google that for you:
http://www.google.com/search?q=Ampl...s=org.mozilla:en-US:official&client=firefox-a

... as to a description, are you interested in time or frequency? In the time domain the first few images on the google results are instructive. In the frequency domain the modulation produces "sidebands" at carrier +/- mod frequencies ...