Hello All,
I'm building a small audio amplifier circuit, very, very similar to the amplifier shown on the final step of the Class B Audio Amplifier page. I have uploaded a schematic that reflects my changes. It seems to work well below my power rails, but when my output signal becomes close to my power rails, the output clips before I expect it to. My rails are ±12V, but my signal seems to clip when it comes close to 5V. Am I doing something here that would make my circuit clip prematurely?
I have one last question out of academic curiosity. In my circuit, the feedback portion of the second op-amp does not connect directly to the load. This connection is added without explanation in the link above. What purpose does the connection from the load to the feedback of the second op-amp provide?
Thanks for your thoughts!
- Andrew
I'm building a small audio amplifier circuit, very, very similar to the amplifier shown on the final step of the Class B Audio Amplifier page. I have uploaded a schematic that reflects my changes. It seems to work well below my power rails, but when my output signal becomes close to my power rails, the output clips before I expect it to. My rails are ±12V, but my signal seems to clip when it comes close to 5V. Am I doing something here that would make my circuit clip prematurely?
I have one last question out of academic curiosity. In my circuit, the feedback portion of the second op-amp does not connect directly to the load. This connection is added without explanation in the link above. What purpose does the connection from the load to the feedback of the second op-amp provide?
Thanks for your thoughts!
- Andrew
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