Transistor Circuit Identification Quiz

12/28/2001

The following questions relate to the Transistor Ckt Schematic available here:

Note that this Schematic is the one given for use initially as a Study Guide

You should download and print this pdf as a reference for the following questions.

Identify by the name or purpose of Q1 in Figure #1
Identify by the name of purpose of the specific circuits Figure #3, #4, #5, #7, and #8
In the circuits shown as Figures #2, #6, and #7, Q1 and Q2 form what is commonly called a ___________ circuit.
In the circuit shown as Figure #5, Q1 and Q2 have what things in common with Q2 and Q3 of Figure #8? _____________________________________________
What circuit in this group of circuits is commonly used for analog purposes? ___________
The one circuit which is known for it's hysteresis switching effect is the circuit shown as Figure # ___.

Note: Where a ( ..... / ..... ) is shown, it represents a choice of those items within the parenthesis.

Q1 represents a ( low / high ) dynamic resistance to point "B".
Point "E" should be ( left as-is / -V / +V ) for Q2 to work correctly.
Q1 represents a ( constant-current / constant-voltage ) source, and Q2 represents a ( constant-current / constant-voltage ) source.

Solve for all currents, IR drops, and potentials, using the values as given.
What would be the minimum value of R1 that could be used before Q2 saturates? _______________
Q1 and Q2 form what is commonly called a _________ circuit, and the purpose of this circuit is to function as a _________ ______________.