Test Your EQ
— Issue #159
Each month, Test Your EQ presents
some basic engineering problems for you to test
your Engineering Quotient. What's your EQ?
|
Problem
1—The
following circuit was recommended as a preamp for a speaker
being used as a microphone in an intercom system.
What
is the configuration of the first transistor called?
Answer
Problem
2—What are the advantages of using this circuit
configuration for this application?
Answer
Problem 3—To what extent does the nonlinearity
of the transistor’s B-E junction contribute to the distortion
of the signal at the collector?
Answer
Problem
4—What are the other disadvantages of this circuit?
Answer
Problem
5—What was the first one-time programmable (OTP)
floating-gate PROM?
Answer
Problem
6—Can a simple radio beacon in a model rocket
be used for precision tracking?
Answer
Problem
7—What is the effective source impedance seen
at the wiper of a 50-kW potentiometer being used
as a voltage divider across a battery?
Answer
Problem
8—If a voltage divider is made of two resistors
that have a specified accuracy of ±5%, what is the maximum error
in the divider ratio? What is the likely error?
Answer
Published October 2003
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