Basic Function of an Oscilloscope

[Fu-Kwun Hwang]

Thank you for your suggestions.
There are many different kinds of oscilloscope.
Yes. There are many oscilloscopes which the time/div and volts/div knobs are fixed steps.
However, there are also digital oscilloscopes which the time/div and volts/div knobs can be adjusted continuously.

The above simulation already provide a yoffset knob for moving the trace vertically.

The purpose for the above simulation is to help user understand how the trace of the oscilloscope was formed.
That is why it provide options for users to select types of X/Y functiona: A sin(wt+B) or C t +D


If you need a simulation which is very similar to the one you are using. I will try to create one for you if you can provide a picture of the oscilloscope need to be simulated.

[nolkelvin]

I have downloaded, but it's not working for offline

[ahmedelshfie]

You have to choose first download file after you hit by mouse Get files for offline use
After finish download unzip the file you will be already to access applet in your PC.
The download offline is work normal 

[Fu-Kwun Hwang]

I have downloaded, but it's not working for offline

There is no way to help you if you did not tell us what you did with the download file?
Is there any error message,...etc.
We do not know how to help if you just said it's not working.

Try to unzip downloaded file,then open html file with your browser.

[lookang]

this is a good jdk simulation of the Cathode Ray Oscilloscope (CRO).

will there be an Ejs version soon? i don't think anyone has made one in Ejs yet.
for your consideration



btw i found some java applet here
http://www.phys.hawaii.edu/~teb/java/ntnujava/oscilloscope/oscilloscope.html by hwang@phy03.phy.ntnu.edu.tw
http://www.ece.ncsu.edu/virtuallab/JAVA/applets/osc.html by daniel hoag and erwin d'souza copyirght NC state university
http://www.csupomona.edu/~pbsiegel/gsix/oscilloscope.htm by Peter Siegel California State Polytechnic University

the learning objective is
Determine the frequency of sound using a calibrated C.R.O.

Determination of frequency of sound using a calibrated C.R.O.

•   Sound are longitudinal waves of compressions and rarefactions through a physical medium, for example air.

•   The frequency of the sound waves from a given source could be determined using a calibrated cathode-ray oscilloscope (C.R.O.) as follows:

-   the source of sound e.g. a loud speaker is placed a short distance from a microphone connected to a calibrated C.R.O. as shown.
-   The time base of the C.R.O. is adjusted until a stationary trace is obtained.
-   The period of the sound wave is given by the product of the length of one wave cycle and the time base setting.
-   The frequency of the wave is the reciprocal of the period.

[Fu-Kwun Hwang]

Here is the EJS version of the same applet

Embed a running copy of this simulation
<applet code='users.ntnu.fkh.oscilloscope_pkg.oscilloscopeApplet.class' archive='http://www.phy.ntnu.edu.tw/ntnujava/ejsuser/2/ejs_oscilloscope.jar' name='oscilloscope8004' id='oscilloscope8004' width='791' height='413' mayscript=true><param name='draggable' value='true'></applet>
Embed a running copy link(show simulation in a popuped window)
<a href='http://www.phy.ntnu.edu.tw/ntnujava/msg.php?smfejs=8004' target='smfejs'>Run simulation</a>

Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License

• Please feel free to post your ideas about how to use the simulation for better teaching and learning.
• Post questions to be asked to help students to think, to explore.
• Upload worksheets as attached files to share with more users.

Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!

[lookang]

awesome!

will study it and remix it soon 

thanks!

[mike1966]

Thank you for all.
You are very helpful. I enjoy your work and you make me more comfortable in the classroom.
Michael Petropoulos
Patras, Hellas
 

[MelissaDaisy99]

Well, great work! You have helped me to improve my knowledge about this field. Thank you so much for sharing.

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[kwinter]

I downloaded the ZIP files.  After un-zipping, I have the following files:
  back     GIF Image   
  index        Chrome HTML Document   
   knob.class     CLASS File   
   oscilloscope.class     CLASS File   
   oscilloscope   Chrome  HTML Document   
   oscilloscope_kr     Chrome HTML Document   
   oscilloscope_s     Chrome HTML Document   
   sample     GIF Image   
   scope     GIF Image   
My problem is that I don't know what to do next.  Also, what version of JAVA do I need?
Any help?
Thanks,
Ken Winter

[Fu-Kwun Hwang]

Double click index.html to open it or use your browser open file and select index.html file.

Any version of java will do since it was created with JDK1.0.2 !

[lookang]

Here is the EJS version of the same applet

dear prof!
i solved a bug
please replace the following line in the code.

// yfun2="("+yfun+")/vdiv+v0";
yfun2="("+yfun+")/vdiv*dy+v0";

missing dy
thanks again for advancing the world of physics education.

[koclup1580]

 thank you so much.
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[tcruise7771]

Is it possible for you to modify the code to be able to use the input of the audio in of the microphone as a signal input and thus capable of displaying syne waves and frequency of the input signal ?

[diinxcom]

-*-
I am very interested because I have to make an end work for schools.
Thanks