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Unidentified low frequency components around 50Hz in a dc-ac inverter
Sorry for not replying soon to all the questions that you made.   What speed are you running the AVR?  What is the exact timer config? Are you using an interrupt to...
Sunday, 21 February 2016 - 01:58
Unidentified low frequency components around 50Hz in a dc-ac inverter
Huh?  I still don't see how you're getting 20 kHz.  If you're using dual slope mode, the frequency of an 8-bit timer will be F_CPU / (prescaler * 510).  With an...
Wednesday, 25 November 2015 - 21:01
Unidentified low frequency components around 50Hz in a dc-ac inverter
  All that said, your statement about the frequency components shifting when you remove the filter is a bit puzzling. I have not yet wrapped my head around that. I took a...
Wednesday, 25 November 2015 - 20:20
Unidentified low frequency components around 50Hz in a dc-ac inverter
Yes, it is being amplitude modulated, and that produces the "sidebands" you see What do you think can cause such a modulation?   The waveform, itself, looks distorted at...
Sunday, 22 November 2015 - 02:18
Unidentified low frequency components around 50Hz in a dc-ac inverter
Like  Torby, those are suspiciously like modulation sidebands. How have you determined these frequencies? Spectrum analyzer? FFT   I used the FFT feature on the...
Saturday, 21 November 2015 - 17:47
Unidentified low frequency components around 50Hz in a dc-ac inverter
Sorry I can't post the code neither the schematics because I don't have the soft version of the schematic and the console that im working on is not connected to the internet....
Saturday, 21 November 2015 - 16:29
Unidentified low frequency components around 50Hz in a dc-ac inverter
I don't have any distortions in my sin table. When plotting it I'm getting a perfect 50Hz sin wave! Also looking at the frequency spectrum of the sin table shows a single...
Saturday, 21 November 2015 - 15:21