test #1 fall 2004

test #1 fall 2004 - 6 What major advantage does the...

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Name:_________________________________________ EE 3220 Test #  1 SSN:__________________________________________  Fall 2004 Any work done on the back of pages will not be graded.  Do not write on back. 1.) Perform the DC bias analysis for the circuit below.  (Find all node voltages and  currents).  What is the power absorbed by the transistor? 2.) Draw the complete two-port equivalent linear circuit model for the circuit below  and derive the gain v o /v s . Assume C E  and C S  have negligible impedances in the  model.
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3.) For the circuit below, what is the input swing range of voltages that will still have  the transistor operating in the constant current region? 4.) Find the output swing range for the differential amplifier.  
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5.) Approximate the single ended differential and common mode gain at output 1  (A dm-se1  and A cm-se1 ) for the differential amplifier circuit in the previous problem.
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Unformatted text preview: 6.) What major advantage does the transistor current source have over a single resistor current source? 7.) If the voltage follower does not offer any voltage gain, what purpose would it serve? 8.) If a simple capacitor can bypass the emitter resistor and create large gain with stable bias amplifiers, why are other, more complicated active bypass amplifiers used instead? (Give 2 reasons) 1-2-9.) What uncontrollable factors affect β F of a BJT? What problems will this cause in a single transistor amplifier circuit? 10.) What are the advantages and disadvantages of adding a resistor to the emitter of a BJT amplifier? 11.) Why is the FET inverter with a resistive load not a good analog signal amplifier? What modification can we make to the circuit that would be more suitable?...
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This note was uploaded on 01/25/2012 for the course EE 3220 taught by Professor Audiffred during the Spring '06 term at LSU.

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test #1 fall 2004 - 6 What major advantage does the...

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