Electrical Engineer Crossword (Issue 270)

The answers to Circuit Cellar’s January electronics engineering crossword puzzle are now available.


1.     ICONOSCOPE—The first widely used television camera tube

5.     INTERRUPTROUTINE—Responds to disturbances [two words]

8.     RADIXPOINT—Separates a number’s integer part from its fraction part [two words]

11.   IMPEDANCE—Bridge circuit used to measure resistance

14.   SALLENKEY—A simple filter topology used to implement second-order active filters [two words]

16.   TYNDALLEFFECT—Light scattering [two words]

17.   LADDER—A kind of passive filter

18.   INPUTOUTPUT—Microcontrollers contain these type of peripherals [two words]

19.   IDEMPOTENTLAW—The result never changes [two words]



2.     NANDCIRCUIT—Combines two types of functions in a binary circuit with two or more inputs and one output [two words]

3.     BARDEEN—Won the Nobel Prize in Physics twice

4.     DIODE—Developed in 1904 by English engineer John Ambrose Fleming

6.     ECHOBOX—A device that receives part of a transmitted pulse and transmits it back to the receiver [two words]

7.     KARNAUGHMAP—Used to simplify algebra expressions [two words]

9.     FARADY—English scientist (1791–1867) who published the law of induction

10.   GANGED—Tuning that uses a single control to tune two or more circuits

12.   DCGENERATOR—French instrument maker Hippolyte Pixii developed a prototype for this in 1832 [two words]

13.   ILLUMINATE—What an LED does

14.   SAWTOOTH—A waveform with a slow linear rise time and a fast fall time

15.   RCSERVO—An absolute-positioning actuator that is typically limited to a 180° rotation  [two words]

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