Diode Quiz
July 1961 Popular Electronics

July 1961 Popular Electronics Table of Contents People old and young enjoy waxing nostalgic about and learning some of the history of early electronics. Popular Electronics was published from October 1954 through April 1985. All copyrights are hereby acknowledged. See all articles from Popular Electronics.

Test your diode switch analysis skills here with six circuits designed by Mr. Robert P. Balin in the July 1961 issue of Popular Electronics. When evaluating the equivalent circuits with the diodes biased on or off, don't make the job more difficult for yourself by considering whether there is enough voltage or current to turn a particular diode on or not, just whether the diode is forward or reverse biased. Doing so reduces everything to simple series and parallel combinations. Redrawing each circuit either with a short for a forward biased diode and an open for a reverse biased diode makes the task easier.

 

Diode Quiz

By Robert P. Balin

Keeping in mind that a diode can pass current in one direction only, see if you can find the effective resistance across the battery in the circuits below. Assume that every resistor measures six ohms, and that the diodes have zero resistance in the forward direction, infinite resistance in the reverse direction.

Here are other Popular Electronics quizzes:

- Lamp Brightness Quiz, January 1969 - Graph Interpretation Quiz, April 1967 - Electronic Quizoo, October 1962 - Electronic Photo Album Quiz, Mar 1963 - Electronic Analogy Quiz, Nov 1961 - Electronic Alphabet Quiz, May 1963 - RC Circuit Quiz, Jun 1963 - Diode Quiz, Jul 1961 - Kool-Keeping Kwiz, Jun 1970 - Electronic Curves Quiz, Feb 1963 - Electronic Numbers Quiz, Dec 1962 - Energy Conversion Quiz, Apr 1963 - Coil Function Quiz, Jun 1962 - Electronics Analogy Quiz, Aug 1960 - Audio Quiz, April 1955 - Electronic Unit Quiz, May 1962 - Capacitor Circuit Quiz, Jun 1968 - Magnetic Phenomena Quiz, Feb 1962 - Electronics Geography Quiz, Apr 1970 - Electronic Menu Quiz,  Aug 1963 - Electronic Noise Quiz, Aug 1962 - Electronic Current Quiz, Oct 1963 - Electronic Inventors Quiz, Nov 1963 - Resistor Function Quiz, Jan 1962 - Electronic Measurement Quiz, Jan 1963 - Vacuum Tube Quiz, Feb 1961

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Diode Quiz Answers

1.   2 ohms

2.   6 ohms

3.   3 ohms

4.   9 ohms

5.   6 ohms

6.   2 ohms

 

 

Posted April 13, 2014