This circuit provides for right half wave rectification of the input signal. The op-amp IC no-NE5535 is Dual High Slew Rate Op-Amp, it is used for main of this circuit. The input signal have two-phase supply are Fist, positive signals is the gain is 0; And second, negative signals is the gain is – 1. [...]

read more: Precision half wave rectifier using op-amp