Precision Full-Wave Rectifier – Dual-Supply

  • Rajkumar Sharma
  • 386 Views
  • easy
  • Tested

This is a dual-supply precision full-wave rectifier board that can turn alternating current (AC) signals into single polarity signals. The OPAMPs, U1A, and U1B, buffer the input signal and compensate for the voltage drops across D1 and D2 allowing for small signal inputs. This implementation functions with limited distortion for 20Vpp input signals at frequencies up to 50 kHz and for signals as small as 50 mVpp at frequencies up to 1kHz. The circuit can be used in applications that need to quantify the absolute value of input signals which have both positive and negative polarities.

Connections

  • Connector CN1: DC Supply Input +/-15V DC
  • Connector CN2: AC Signal Input
  • CN3: Full-Wave Signal Output
  • Jumper J1: PCB Jumper Closed
  • Use PR1 if the input Signal Peak to Peak is more than 20V
  • For DC Voltage Output: Use C6=10uF/25V and R5=100K Size 0805 (Full-Wave AC to DC Voltage Output)

Features

  • Supply Voltage +/-15V DC
  • Input AC Signal +/-50mV To +/-10V
  • Output 50mV to 10V Full-Wave Rectified Output
  • Frequency Response 1Khz to 50Khz
  • PCB dimensions: 42.39 x 15.56 mm

Schematic

Parts List

NO.QNTY.REF.DESC.MANUFACTURERSUPPLIERSUPPLIER PART NO
11CN13 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5316-ND
21CN24 PIN MALE HEADER PITCH 2.54MM WURTHDIGIKEY732-5317-ND
31CN32 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5315-ND
42C1,C310uF/25V SMD SIZE 1206 OR 1210AVXDIGIKEY478-2363-1-ND
52C2,C40.1uF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
61C547PF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
73PR1,R5,C6DNPOPTIONALDO NOT INSTALL
82D1,D21N4148 SMD NEXPERIADIGIKEY1727-2967-1-ND
91J1CLOSED-SOLDER JUMPER
104R1,R2,R3,R41K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
111R649.9E 1% SMD SIZE 0805MURATA/YAGEODIGIKEY
121U1OPA2211TIDIGIKEY296-24510-5-ND

Connections

Gerber View

Photos

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Video

OPA2211 Datasheet

opa2211-ep

PCB

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