November 1961 Popular Electronics
Table of Contents
Wax nostalgic about and learn from the history of early electronics. See articles
published October 1954 - April 1985. All copyrights are hereby acknowledged.
It is common in electronics courses
for an analogy to be drawn between electrical and mechanical phenomena. In fact, a lot
of circuit analysis methods and equations apply directly to mechanics, and vice versa.
An LC (inductor-capacitor) oscillating tank circuit is akin to a spring and dashpot.
Resistance of a wire is likened to skin friction of water flowing through a hose. Who
among us can forget those lessons? This Electronic Analogy Quiz from the November 1961
edition of Popular Electronics presents a challenge both because some not-so-familiar
examples of analogies are offered, and because some are a real stretch. Therefore, don't
feel too bad if you don't get a few. That's my way of saying that I didn't get all of
them right ;-) Answers and explanations are at the bottom of the page.
Electronic Analogy Quiz
Electronic circuits perform functions similar to many mechanical devices and natural
phenomena, and finding an analogy between them often leads to a better understanding
of both. See if you can match the numbered electronic circuits on the left with the lettered
sketches on the right.
See answers below.
Popular Electronics published many quizzes over the years
- some really simple and others not so simple. Robert P. Balin created many of the quizzes.
This is a listing of all I have posted thus far.
- A Baffling Quiz
- January 1968
- Electronics IQ Quiz
- May 1967
- Plug and Jack Quiz
- December 1967
Switching Quiz - October 1967
Angle Quiz - September 1967
Electronics Quiz - July 1967
- Bridge Circuit
Quiz -December 1966
- Diode Function
Quiz - August 1965
- Diagram Quiz, August
- TV Trouble Quiz,
- Electronics History Quiz,
- Scope-Trace Quiz,
Circuit Analogy Quiz, April 1973
Your Knowledge of Semiconductors, August 1972
- Ganged Switching
Quiz, April 1972
- Lamp Brightness
Quiz, January 1969
- Lissajous Pattern Quiz, September 1963
Quizoo, October 1962
- Electronic Photo Album Quiz, March 1963
- Electronic Alphabet Quiz, May 1963
- Quiz: Resistive?
Inductive? or Capacitive?, October 1960
- Vector-Circuit Matching Quiz, June 1970
Quiz, September 1961
- RC Circuit
Quiz, June 1963
- Diode Quiz,
- Electronic Curves Quiz, February 1963
- Electronic Numbers Quiz, December 1962
- Energy Conversion Quiz, April 1963
Function Quiz, June 1962
Quiz Part I - February 1964
Quiz - February 1967
- Unknown Frequency
Quiz - September 1965
Metals Quiz - October 1964
Measurement Quiz - August 1967
- Meter-Reading Quiz,
Geometry Quiz, January 1965
Factor Quiz, November 1966
Math Quiz, November 1965
- Series Circuit Quiz,
Quiz, March 1966
- Electronic Analogy
Quiz, November 1961
Coupling Quiz, August 1973
- Electronics Analogy Quiz, August 1960
- Audio Quiz,
Unit Quiz, May 1962
Capacitor Circuit Quiz, June 1968
- Quiz on AC Circuit Theory, December 1970
- Magnetic Phenomena Quiz, February 1962
- Electronics Geography Quiz, April 1970
Electronic Menu Quiz, August 1963
- Electronic Noise Quiz, August 1962
- Electronic Current Quiz, October 1963
- Electronic Inventors Quiz, November 1963
Function Quiz, January 1962
- Electronic Measurement Quiz, January 1963
Tube Quiz, February 1961
- Kool-Keeping Kwiz, June
- Find the
Brightest Bulb Quiz, April 1960
Electronic Analogy Quiz Answers
1. Low-pass filter
A low-pass filter "clips off" signals above a certain frequency; a tunnel
"clips off" objects above a certain height.
2. Zener diode regulator
D. Centrifugal governor
A zener diode "resists" changes in voltage; a governor resists
changes in speed.
3. Push-pull circuit
H. Two-man saw
A signal is alternately "pushed" and "pulled" in a push-pull circuit;
a two-man saw is alternately "pushed" and "pulled" by its operators.
4. Wave trap
A. Drain trap
A wave trap removes unwanted signals; a drain trap "removes" unwanted
5. Smoothing filter
C. Coil spring suspension
A filter "absorbs" signal "peaks" before they reach
the associated circuits; a spring "absorbs" vibration "peaks" before they reach the associated
6. Diode clipper
E. Hedge clipper
A diode clipper "clips" off "peaks" in a signal; a hedge clipper"
clips" of "peaks" in a hedge.
7. High-pass filter
A high-pass filter obstructs the passage of signals below a certain
frequency; a mountain obstructs the passage of objects below a certain height.
8. A.C. rectifier
An a.c. rectifier allows current to flow in one direction ; a
ratchet-and-pawl allows a shaft to turn in one direction.
Posted September 20, 2012