Mixer: An op-amp circuit that can have a different voltage gain for each of several input signals. The total output signal is a superposition of the input signals. Related posts: Personnel Management Operative Functions Administrative Role of PM Competency HR Management Role Change Personnel Policies Personnel Procedures Appealed Policies Implied Policies Specific Policies Personnel records Research Pure research Personnel research Attitude or Opinion Survey Turnover Secondary research Applied research Personnel audit Read more articles Previous PostMiller’s theorem Next PostMonolithic IC