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Request for circuit analysis

Discussion in 'Electronic Design' started by rajibbandopadhyay, Oct 21, 2012.

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  1. Dear friends,
    The reason why I got stuck with electronic circuits just before biasing
    will be clear in a short while.
    Without the support of a good teacher the logic involved appears
    The pages attached relate to transistor as an amplifier and its biasing.
    The book concerned is The
    questions are posted on some of the attached pages themselves. The rest
    attached pages are for logical continuity and completeness.
    I will try to find a way on how to get those pages uploaded and then get
    Please help.
  2. Guest

    you forgot the part about asking a specific question and what
    specifically you don't understand. No one is going to do you
    home work for you, you could at least pretend you tried to make
    an effort

  3. Typed on the pages.
  4. Ian Malcolm

    Ian Malcolm Guest

    That's NOT how it works. You are asking a bunch of complete strangers -
    many of us highly paid professionals - to give up some of our time to
    answer your questions. The LEAST you have to do is to ask the questions
    here so those of us who have no particular interest in the SPECIFIC
    question can pass over it and to get the attention of those who wish to

    Read "How to ask questions the smart way" at:

    Then ask your question HERE. We wont do your homework for you but if you
    make an attempt are likely to help you correct it.
  5. On Sun, 21 Oct 2012 07:56:14 +0000, Ian Malcolm wrote:
    I am sorry I could not explain myself better, and wasted your time. The
    questions are contextual, so are posted on the pages themselves.
  6. On Sun, 21 Oct 2012 07:56:14 +0000, Ian Malcolm wrote:

    I am sorry I could not explain myself better, and wasted your time. The
    questions are contextual, so are posted on the pages themselves.

    I wanted to save your time by posting my questions on the pages
    themselves. I believe it would definitely save your time.
  7. WoolyBully

    WoolyBully Guest

    There are no friggin pages here.
  8. The pages are in:
    Page 249 has a circuit diagram.
    Problem 9 is given near end of page and continues in Page 250. The
    Problem 10 refers to the same circuit and defines voltage gain by a
    formula. How this formula is derived?
    Instability and solution is given in Page 253, Problem 11 and a circuit
    diagram is given. Then formula for gain is given. But how this formula is
    Page 256 has a problem 17 continued in page 257. Steps are given. But if
    the gain part can not be derived then the solution can not be arrived at,
    which are continued in page 258.
  9. ehsjr

    ehsjr Guest

    The url you posted does not display large enough in either IE
    or Firefox 16.0.1. What is visible does not show a diagram on
    page 249.

    To get answers, you will need to find a better way to ask your
    questions. I'll try to give you a method: "ASCII art"

    Here is what I can make out on page 248 in "ASCII art"
    (Not shown is the sine wave input and inverted sine wave output)

    | |
    [R] [R]
    | |
    | +---Vc
    | |
    | /

    You can use the above diagram (if it is the one you have in mind)
    to ask your question.

    Or you can find another way. We can't help if we can't see.

  10. P E Schoen

    P E Schoen Guest

    "rajibbandopadhyay" wrote in message [snip overly generalized questions]

    The images are too small to read. And using the zoom in IE9 actually makes
    the image smaller.

    From what I can see, you have no idea how to apply Ohms Law, and you don't
    understand basic transistor characteristics such as Vbe diode junction and
    current gain. You may need to go back a few (hundred) pages and comprehend
    the basic principles of circuit components.

    Have you ever actually built a simple circuit?

    Have you tried using a simulator like LTSpice? (a tutorial to get started)

  11. IanM

    IanM Guest


    Two hints concerning ASCII art and circuit diagrams:
    You *MUST* use a fixed pitch font to view ASCII art or the lines dont
    match up vertically. If you don't know which font to use, try "Courier New".

    There's a utility for Windows called AAcircuit that helps you draw ASCII
    art circuit diagrams. <>
    Simply use it to edit your diagram till you are happy with it, then use
    its menu option to copy to clipboard, then paste into your next
    newsgroup posting. The program is German but you can also select
    English or Danish.
  12. Robert Baer

    Robert Baer Guest

  13. ]
    Query replied to privately.
  14. Guest

    You're not going to learn much from a book like that, it is just recipes. The gain equation for the uncompensated config beta x Rc/ hie is more symbolic than numerical since hie is all over the map depending on collector current swing.
  15. On Tue, 23 Oct 2012 12:24:47 -0700, Jim Thompson wrote:

    And I would be eagerly waiting...
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