Push-pull audio amplifier circuit using op amp

237

03:16:48

This circuit is actually from electroboom. Source is here. 

https://www.electroboom.com/?p=243

Only thing I added was a capacitor parallel to the load to help get rid of the flat spot created by the transistors minimum activation boltage/current. 
Enjoy!

published 2 years ago

jpoulin0901

2 years ago

You have an error in your circuit -- you are completely bypassing your push -pull stage. What you want to do is have the op-amp output go to the transistor bases and take your feedback from the final output (the emitters) instead of the op-amp output. That will automatically fix the dead zone of the push-pull stage. That circuit has been around since long before elecroboom btw. It's a classic.

592azy2circuitdude

2 years ago

I agree with @jp. I also think you need a split power supply instead of a single 24V source. A picture is worth a thousand words, so please check out my modified version. Let me know what you think... https://everycircuit.com/circuit/4605656187011072

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