PAM modulation and demodulation

194

03:05:22

In this circuit a sinusoidal wave of 10kHz will modulated in PAM with a carrier signal of 335kHz.
The sinusoidal wave will be reconstructed with 2 RC low-pass filters with fc=10kHz.

published 9 years ago

hurz

9 years ago

Better scaling this way ;-) http://everycircuit.com/circuit/5901837362790400

Karsten

9 years ago

Can't you just call that AM? I mean, I have no problem with PAM but I think the P isn't necessary.

Savii

9 years ago

It's called PAM - acronime of pulse amplitude modulation. It's different from the AM modulation.. The carrie signal in this tipology of circuit it's a rectangular wave..

Karsten

9 years ago

I mean, I knew that PAM means Pulse Amplitude Modulation, but I thought it wasn't different from regular Amplitude Modulation. Thanks for the explanation why that is so.

thebugger

9 years ago

It's close, although different. You wouldn't be wrong to call it amplitude modulation, but that's not a complete description.

Savii

9 years ago

Yes.. You are right.. It is a type of amplitude modulation.. But thats is the specific description

thebugger

9 years ago

Yes it's like differentiating a red tomato from a green tomato. They both are tomatoes, but are different types of tomatoes. This is a very bad analogy, but it sorta applies

hurz

9 years ago

Yes bad, because multiplication is multiplication. And Red!=Green

thebugger

9 years ago

Red! Is actually cyan, but whatever hahaha

hurz

9 years ago

I wont eat cyan tomatoes

thebugger

9 years ago

Hahaha :D no one would.

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