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Study Guide

Study Guide. Exam 2. Exam 2. Closed book/Closed notes Bring a calculator. Superposition. Use whatever analysis technique you are most comfortable with. Draw the circuits with the single source on/other sources off Calculate the voltages and currents

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Study Guide

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  1. Study Guide Exam 2

  2. Exam 2 • Closed book/Closed notes • Bring a calculator

  3. Superposition • Use whatever analysis technique you are most comfortable with. • Draw the circuits with the single source on/other sources off • Calculate the voltages and currents • Sum results to obtain the voltage and current for the original circuit • Assumption is that the circuit components are linear • Power dissipation/generation can not be added using superposition

  4. Dependent Sources • Identify type of dependent source • VCVS, VCCS, CCCS, CCVS • Know the PSpice symbols and how to incorporate them correctly in a circuit • Solve for currents and voltages in a circuit containing one or more dependent sources.

  5. Thevenin and Norton Equivalent Circuits • You may determine the equivalent circuit by: • Calculating the open circuit voltage, the equivalent resistance, and the short circuit current • Performing multiple source transformations • Maximum power transfer to the load occurs with RTh = Rload

  6. Operational Amplifiers • Use the nearly ideal op amp model • No current enters the input terminals • The output voltage produced in a circuit with a feedback resistor is used to make the two input voltages equal when V- < Vo <V+ • If the closed loop gain times the input voltage(s) is greater than V+, then Vo = V+ • If the closed loop gain times the input voltage(s) is more negative than V-, then Vo = V- • If there is no feedback resistor, then Vo is equal to • The open loop gain times the voltage difference between the two input terminals in the linear region (very small input voltages). • V+ when the open loop gain times the voltage difference is greater than V+. • V- when the open loop gain times the voltage difference is more negative than V-.

  7. Operational Amplifiers • Cascaded Op Amps • The total gain f the circuit is the multiplication of the gains of each of the op amp circuits that have be ganged together

  8. Format of Exam • Short answer questionsthat are similar in format to the Electronic Response questions. • Use superposition to find a current/voltage in a circuit. • Solve for currents and voltages in a circuit containing a dependent source. • Transform a network of resistors and sources to its Thevenin and Norton equivalents • Solve for the closed loop gain of a circuits with one or more op amps in it.

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