1.3) Two-Output Precision Half-Wave Rectifier Circuit
Although the precision rectifier circuit illustrated in Fig.7-3 has two output terminals, it is just a modification of the circuit in Fig. 7-2.
Diode D2 is connected in series with the op-amp output terminal and resistor R2 exactly as in Fig.7-2.
Diode D1 is also connected as in Fig.7-2, except that resistor R4 has been added in series with D1.