It hums. And I’m annoyed.
What did I do on Saturday? Well, via the wonder of the web, I watched my friend burn both himself and his baby daughter with his home-made amplifier, then rail against excel and python in an attempt to print out some gradesheets. He eventually got so angry he threw himself out the window. He was in the basement, but you have to appreciate the attempt.
Update: I modified the last stage to have less gain (4 instead of 20), so it better matches my source, furthermore I added a 5k resistor at the input to have less input impedance. That helped a lot.
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