I'm designing a single channel, 6-W transistor audio amplifier for a class this semester, and I'm a bit stuck on a few things. The transistor will have four stages.
1) Input Buffer Stage (To ensure a high input impedance)
2) Gain Stage
3) Second Buffer Stage
4) Output Push-Pull Stage
Here's my current schematic in MultiSim:
Here's the oscilloscope output. Yellow is input, Blue is output.
Here's the output (in blue) taken after the gain stage, for reference.
What I'm having trouble with is clipping. So, the thought that jumps into my head is that the AC load line is causing this. Also, the output voltage should ideally be like, 20 V peak-to-peak, and it's not nearly that. Anybody an expert in audio amplifier design? I could use some pointers and advice, and it would be greatly appreciated.
1) Input Buffer Stage (To ensure a high input impedance)
2) Gain Stage
3) Second Buffer Stage
4) Output Push-Pull Stage
Here's my current schematic in MultiSim:
Here's the oscilloscope output. Yellow is input, Blue is output.
Here's the output (in blue) taken after the gain stage, for reference.
What I'm having trouble with is clipping. So, the thought that jumps into my head is that the AC load line is causing this. Also, the output voltage should ideally be like, 20 V peak-to-peak, and it's not nearly that. Anybody an expert in audio amplifier design? I could use some pointers and advice, and it would be greatly appreciated.