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ATTENTION!!! There are a few errors in the diagram in the video. In the diagram at the link, these errors have been corrected.
Why make it easy when you can make it difficult, right?! In general, I assembled an amplifier for a condenser microphone on an operational amplifier and, accordingly, with a bipolar power supply. But this seemed not enough, and I wanted to compare several op-amps, both domestic and foreign. First I tried to find out how much noise they make with an oscilloscope, and after that I made a test recording on each operational amplifier. Notice the difference?
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