Power amplifier placement

@jeffrey-xA7lUP • Oct 26, 2024

Oct 26, 2024

1.4K

Why is the current rating of the signal is amplified last and not in the begining

What will happen if we use a CC to amplify the ip current then amplify the voltage of the signal

Is it feasible or not

Do clarify me

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Jeffrey Arulraj

@jeffrey-xA7lUP • Sep 29, 2012

Really what will happen in such a configuration
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[Prototype]

@prototype-G9Gn5k • Sep 30, 2012

If the circuit is the source of the signal then the amplification will alwyas be at the end. Since our circuiti the source we the signal will be already strong enough for processing. Amplification is done just before the signal leaves the source circuit to travel to far away destination or if the signal is being fed to multiple other places. Amplification at this point will ensure the siganl reaches with proper strength. Otherwise if you just amplify at the begining, the signal will already get week due to processing and will die half way.

If still the signal strength gets lowered repeaters are used.

This is in genral why amplification is done at the last stage. However I feel it should be contextual to your question.

Sorry for typos, writing from mobile.
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Jeffrey Arulraj

@jeffrey-xA7lUP • Sep 30, 2012

No probs about typos pal

But I meant this in cascaded amplifiers why does the current amplifiers are like terminal ends and not in the initial stages
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Jeffrey Arulraj

@jeffrey-xA7lUP • Sep 30, 2012

What is the prime concern then I am really confused with your reply #-Link-Snipped-#

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[Prototype]

@prototype-G9Gn5k • Oct 1, 2012

jeffrey samuel
No probs about typos pal

But I meant this in cascaded amplifiers why does the current amplifiers are like terminal ends and not in the initial stages
I am not sure if this is what you are asking but let me try.

See, you're cascading the amplifiers to attain a certain amount of voltage amplification. Now as you keep on cascading, with every stage the voltage will increase but current will decrease. Hence to make up for this current loss, after the required voltage amplification is attained, we amplify the current at last so its ready to be given to next stage in strongest form.

Power amplifier will amplify both voltage and current and its used in last so as our amplified voltage doesnt loose the required amplification level in current amplification process.
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Jeffrey Arulraj

@jeffrey-xA7lUP • Oct 2, 2012

Now I get it pal I misconceived that At each stage of any amplifier both current and voltage is amplified now it is crystal clear
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