Modulation doubts

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Nimo 17 years ago

Hi engineer..,

well, I think my question will be most basic to you yet I need your help :-)

Modulation:- (a) Freuency (b) Amplitude

well, I don't have any problem with frequency modulation because from an electronic Oscillator we can produce frequncies depending upon our requirements

what my point is..,

How Amplitude modulation was done ?

because, we can't produce Amplitude of a wave from the crystal ( oscillator or what ever it is;)

then, how Amplitude was produced depending upon requirements ? ____

what equations do you people use most frequently for "Amplitude" Modulation ?

cheers nimo

It is a mathematical fact that the casting of this pebble from my hand alters the centre of gravity of the universe.

Thomas Carlyle * Sartor Resartus III.

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Jan Panteltje 17 years ago

On a sunny day (Sat, 16 May 2009 11:59:50 GMT) it happened Jan Panteltje wrote in :

Oops, 41 more years, there you go...

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Jan Panteltje 17 years ago

On a sunny day (Sat, 16 May 2009 09:10:17 -0700 (PDT)) it happened Nimo wrote in :

---------------------------------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

So then you HAVE a crystal oscillator.

AND if you HAVE a crystal oscillator, WHAT IS ITS AMPLITUDE??????

Those are still rare, the Japanese have a robot called Asimof (?) it can direct an orchestra to play 'the unreachable sky'. And it can talk too.

BYE

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John Fields 17 years ago

That\'s not true. Consider a swing at a playground and it should be obvious that while the frequency of its swing will stay more-or-less constant, the amplitude of its swing will vary with the force applied to it.

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Nimo 17 years ago

thanks John :)

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Nimo 17 years ago

ng,

^^

really, I don't know;

(1) Can you please tell me, how to determine the "amplitude" of a given crystal ?

(2) Is the amplitude of a crystal is just "constant" ? or it is "varying" at different places ?

direct an orchestra

thanks for the reply :)

greetings ____nimo

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Jamie 17 years ago

Yes, I have the answer for your home work.

Frequency (FM) and Amplitude (AM)

FM = Foreign music. AM = American music..

Hope that helped out!

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Trolleater 17 years ago

Nimo wrote

IT IS SIMPLE.

THINK PENDULUM.

KICK PENDULUM HARDER IT WILL MOVE FURTHER BUT PERIOD STAYS THE SAME.

TUNING FORK SAME THING.

CRYSTAL SAME THING.

CONNECT OSCILLOGRAPHOSCOPE TO CRYSTAL. HIT CRYSTAL. AMPLITUDE IS DECAYING SINEWAVE. HIT CRYSTAL HARDER. AMPLITUDE IS BIGGER DECAYING SINEWAVE.

USE HAMMER.

____

E=MC**2

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Nimo 17 years ago

awesome.., I need this point and I got it

thank you very much :-) keep it up

by the way, you are a troll eater..I think I've to be careful :(

clever ;

greetings nimo ______

Radio has no future. Heavier-than-air flying machines are impossible. X-rays will prove to be a hoax.

-PHYSICIST LORD KELVIN , 1899

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FatBytestard 17 years ago

Ever heard of a mixer?

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Abbey Somebody 17 years ago

Nice job, John.

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Jan Panteltje 17 years ago

On a sunny day (Sun, 17 May 2009 20:53:18 -0700) it happened FatBytestard wrote in :

How about a spacecraft? (While we are changing subject).

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John Fields 17 years ago

:-) JF

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JosephKK 17 years ago

Nimo

thing,

---------------------------------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^= ^^

So measure it.

It is not a property of the crystal, it is a property of the oscillator around it.

Not even a meaningful.

can direct an orchestra

follow-up to sci.electronics.basics

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