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Help with Output waveform
Help with Output waveform
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Old 25th March 2020, 01:46 PM   #1
mnhiphop101 is offline mnhiphop101
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Join Date: Sep 2011
Default Help with Output waveform

Im working on a DD m4b. When I play a 100hz sinewave into the amp the the wave on the speaker terminals looks like this. Any idea why? It still reads as 100hz. Sorry for the upside down pic. Idk why it flipped like that.
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Last edited by mnhiphop101; 25th March 2020 at 01:48 PM. Reason: Added a note
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Old 25th March 2020, 02:25 PM   #2
Perry Babin is offline Perry Babin  United States
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Location: Louisiana
Is the amp producing full positive and negative rail voltage?

Do you have rail-rail oscillation on the output transistors?
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Old 26th March 2020, 07:11 PM   #3
mnhiphop101 is offline mnhiphop101
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Yes. The waves look good on the high and low side
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Old 26th March 2020, 07:48 PM   #4
Perry Babin is offline Perry Babin  United States
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What driver board are they using?
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Old 26th March 2020, 11:38 PM   #5
NickGee is offline NickGee
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Do you have the schematic?
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