Download Exam 2 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
– 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
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.
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
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-.
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
Format of Exam
1. Short answer questions that are similar in
format to the Electronic Response questions.
2. Use superposition to find a current/voltage in a
circuit.
3. Solve for currents and voltages in a circuit
containing a dependent source.
4. Transform a network of resistors and sources to
its Thevenin and Norton equivalents
5. Solve for the closed loop gain of a circuits with
one or more op amps in it.