Electronics World Cover,TOC,and list of posted Popular Electronics articles QST Radio & TV News Radio-Craft Radio-Electronics Short Wave Craft Wireless World About RF Cafe RF Cafe Homepage RF Cafe in Morse Code Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs Twitter LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes AN/MPN-14 Radar 5CCG Notable Quotes App Notes Calculators Education Magazines Software,T-Shirts,Coffee Mugs Articles - submitted by RF Cafe visitors Simulators Technical Writings RF Cafe Archives Test Notes RF Cascade Workbook RF Stencils for Visio Shapes for Word Thank you for visiting RF Cafe!

Lissajous Art Circuits for O-Scopes

Regardless of whether you call it a Lissajous pattern or 'quadrature art,' there is a coolness about feeding signals into the X and Y axes of an oscilloscope and watching the patterns that emerge on the CRT (or possibly LCD these days) display. Using static waveshapes can create amazing-enough Etch-A-Sketch type drawings, but animating the on-screen patterns with time-varying signals into one or both axes really spiffs up the results. This short article by Russ Williams on the EDN website presents a few simple circuits for generating some of the quadrature art examples shown in the thumbnail below. A solderless breadboard, quad opamp IC, and a handful of resistors, capacitors, and inductors will get you started. For test equipment, a simple DC power supply, a waveform generator capable of outputting sine, square, and triangle signals, and, of course, an oscilloscope, are all that are needed.

Simple Circuits Enable Oscilloscope Art - RF CafeOf course actual hardware in the form of an arbitrary waveform generator and an oscilloscope is not required to enjoy the show - indeed software emulation will get the job done - any other method loses much of the awe and mesmerizing factor.

Posted  September 25, 2013

Try Using SEARCH to Find What You Need.  >10,000 Pages Indexed on RF Cafe !

Copyright 1996 - 2016
Webmaster:  Kirt Blattenberger, BSEE - KB3UON
Family Websites:  Airplanes and Rockets | Equine Kingdom

All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.