Precision rectifier circuit with integral circuit

Published:2012/9/23 21:14:00 Author:Ecco | Keyword: Precision rectifier , integral circuit | From:SeekIC

The circuit can switch input alternating signal to DC signal. If the input signal frequency is low, the input-terminal capacitor C1 can be canceled.In the negative half cycle, the output terminal of op amp IS1 is connected by diode D1 ( off voltage is 0.7V) and isolated from the same summing point via the diode D2. Op amp IS2 works as the inverting voltage follower.In the positive half cycle, IS1 works as an inverting amplifier and is connected to the summing point by R2. At the input terminal, the resistor R3 and resistor R2 constitute a negative feedback loop.



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