Article
Filter-based 50 Hz Sinewave Generator
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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.
The circuit is free from any kind of gain setting network.
Materials
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.
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PCB
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
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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