About the article

Filter-based 50 Hz Sinewave Generator

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Filter-based 50 Hz Sinewave Generator
The circuit shown here combines the functions of a low-pass filter and an integrator, presenting a novel approach to creating a precision 50-Hz source with relatively low distortion.
The circuit is free from any kind of gain setting network.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.

Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

Component list
Resistors:
R1,R2,R3 = 47k
R4 = 4k7
R5 = 100
Capacitors:
C1,C2,C3,C6,C7 = 100nF
C4,C5 = 1nF
C8,C9 = 47µF 25V radial
Semiconductors:
D1,D2 = zener diode 5.6V 400mW
IC1 = LF353DP
Miscellaneous:
PCB, ref. 040093-1
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