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Continue to Chat115th Birthday of Harold S. Black, Inventor of the Negative Feedback Amplifier https://geekdad.com/2013/04/115th-birthday-of-harold-s-black-inventor-of-the-negative-feedback-amplifier/
115th Birthday of Harold S. Black, Inventor of the Negative Feedback Amplifier https://geekdad.com/2013/04/115th-birthday-of-harold-s-black-inventor-of-the-negative-feedback-amplifier/