Applications for Amplifiers?

Discussion in 'Homework Help' started by gaurav200x, Dec 30, 2008.

  1. gaurav200x

    Thread Starter New Member

    Dec 30, 2008
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    Dear fellow engineers,

    Kindly give me the applications for the following:

    1) RC coupled Amplifier

    2) Direct Coupled Amplifier

    3) Emitter Follower
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
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    Google works very well.
     
  3. gaurav200x

    Thread Starter New Member

    Dec 30, 2008
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    I've been through google but didn't get satisfactory answers and hence joined this forum.

    So now could you please give me elaborate answers to my question?
     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
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    An RC coupled amplifier can be used to amplify AC signals, like an audio amplifier.

    A direct coupled amplifier can be used to amplify DC and AC signals, amplify the signal out of a thermocouple for example.

    An emitter follower can be used to amplify current but not voltage, can be used as a buffer to drive a low impedance load form a high output impedance source.

    These are a few applications, there are lots more.
     
  5. gaurav200x

    Thread Starter New Member

    Dec 30, 2008
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    Thanks a lot. Can I have a few more applications for each? We need to write at least 5 applications for each in the exam.
     
  6. mik3

    Senior Member

    Feb 4, 2008
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    I think your teacher gave you notes where you can read this. They won't ask something in the exam if they don't teach you.
     
  7. gaurav200x

    Thread Starter New Member

    Dec 30, 2008
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    Well if I had the requisite notes, I wouldn't be asking the same on this forum, would I ? The teacher didn't know it completely and asked me to find the same from the internet. So could you please give me some more applications.
     
  8. mik3

    Senior Member

    Feb 4, 2008
    4,846
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    RC coupled:

    AC signals amplifier
    Audio amplifier
    Filters

    Direct coupled:

    DC and AC signals amplifier
    Filters
    Clampers (maybe)
    Oscillators

    Emitter follower:

    Buffers for digital designs and interfaces
    Current amplifier for analog applications
    Output push-pull pair for audio amplifiers

    I can't think something else right now. I hate these stupid questions which ask about general things. The answer can be anything you can think.
     
  9. gaurav200x

    Thread Starter New Member

    Dec 30, 2008
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    Thanks a lot.

    I am sorry if my question has bothered you, but what maybe be stupid for a person who knows the answer may not be stupid for the one, who doesn't !
     
  10. mik3

    Senior Member

    Feb 4, 2008
    4,846
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    I didn't mean it is stupid because I know it (and I don't know it I just told you some possible applications). I meant it is stupid because it asks general things and you can answer anything comes in your mind and if the teacher doesn't know one of the answers he will say it is false.
     
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