Browse Search Popular Register Upload Rules User list Login:
Search:
Frequency Modulator/Demodulator (v2.0.2b15)

Image:
screenshot of the scene

Author: s_noonan

Group: Technical

Filesize: 23.53 kB

Date added: 2012-12-10

Rating: 5.6

Downloads: 696

Views: 568

Comments: 4

Ratings: 2

Times favored: 0

Made with: Algodoo v2.0.2 Edu

Tags:
electronics

Scene tag
Open the Scope display and use the Move tool to move the scope wheel in front of the laser beams.

Note: The percentage of modulation is small (about 7%), so you probably will not notice it on the modulator output. The phase detector is an exclusive-OR (XOR), so its output is a fixed amplitude wave with a pulse width proportional to the phase offset.
Last edited at 2016/07/02 20:53:27 by s_noonan
Please log in to rate this scene
edit
Similar scenes
Title: Amplitude Modulator/ Demodulator (v2.0.2b15)
Rating: 6.5
Filesize: 21.26 kB
Downloads: 1304
Comments: 9
Ratings: 4
Date added: 2012/11/12 23:39:14
Made with: Algodoo v2.0.2 Edu
screenshot of the scene
Amplitude Modul..​..tor (v2.0.2b15)
Rating: rated 6.5
download
Title: Gas Op SMG
Rating: 5.625
Filesize: 82.02 kB
Downloads: 1076
Comments: 1
Ratings: 2
Date added: 2011/08/18 19:39:02
Made with: Algodoo v1.9.9b
screenshot of the scene
Gas Op SMG
Rating: rated 5.6
download
Title: Glock 17 UPDATED (READ DESC)
Rating: 5.625
Filesize: 241.43 kB
Downloads: 3435
Comments: 5
Ratings: 2
Date added: 2011/11/18 09:12:36
Made with: Algodoo v2.0.0 Edu
screenshot of the scene
Glock 17 UPDATED (READ DESC)
Rating: rated 5.6
download
Title: Needle Nose Pliers
Rating: 6
Filesize: 40.48 kB
Downloads: 988
Comments: 2
Ratings: 3
Date added: 2011/11/09 03:56:10
Made with: Algodoo v2.0.1 Edu
screenshot of the scene
Needle Nose Pliers
Rating: rated 6
download
Title: Laser frequency detector
Rating: 6.1111
Filesize: 54.63 kB
Downloads: 1609
Comments: 8
Ratings: 3
Date added: 2009/10/15 04:37:50
Made with: Algodoo before v1.8.5
screenshot of the scene
Laser frequency detector
Rating: rated 6.1
download
Title: Hydraulics
Rating: 5
Filesize: 24.34 kB
Downloads: 712
Comments: 1
Ratings: 1
Date added: 2011/11/25 17:10:27
Made with: Algodoo before v1.8.5
screenshot of the scene
Hydraulics
Rating: rated 5
download
Kilinich
2012/12/10 11:14:06
Something wrong with modulator
Xray
2012/12/10 17:10:44
Kilinich is right. The output of the modulator is the unmodulted oscillator. Also, the output of the phase detector isn't right either. Sorry, Steve, but it appears that this scene needs some fixin'. :unsure:
s_noonan
2012/12/10 23:05:26
I reset Algodoo and it still works fine for me. Do you get a sine wave at the amplifier output? If so, then it is working. The amount modulation is not much (about 7%), so you won't see it on the modulator output signal. The phase detector is an exclusive-OR (XOR), so its output is a pulse width proportional to the phase offset. I tried greater modulation and detecting it with a phase locked loop, but was unsucessful.
Last edited at 2012/12/11 06:49:25 by s_noonan
Xray
2012/12/11 07:02:15
Yes, it's working as you described. I was looking to see a much bigger change in the output of the modulator, which I did not see, so I assumed that it wasn't working (I suspect that Kilinich reached the same conclusion). With only 7% FM, the output is very difficult to see visually on the scope. And now I see the PWM waveform on the output of the phase detector. I wasn't expecting that, but it's definitely working! Good job! :tup: