Low-Frequency Multiplier

Posted on Sep 9, 2012

This circuit uses a comparator as a Schmitt trigger (311H) and two active bandpass filters (LM318H). 3-kHz output

Low-Frequency Multiplier
Click here to download the full size of the above Circuit.

is obtained. Higher harmonics (preferably odd) can be obtained by tuning the active filters to the desired frequency. can be 1, 3, 5, 7, 9, etc. Even harmonics can be produced by substituting a full-wave rectifier or absolute-value circuit for the Schmitt-trigger comparator.

Leave Comment

characters left:

New Circuits



Popular Circuits

Monostable photocell circuit
Touch-sensitive switch
BC337 Light Relay Switch By BC547 &
?» The stepper motor driver Creative Works of Tom McGuire
microcontroller Driving low-voltage H-bridge directly from MCU
Whistle to beep circuit
IR Remote Control Tester
wi fi interfacing with lpc2148 arm7 primer
DMX PC Keyboard Interface circuit
Motorola MaxTrac Radius and GM300 Series Introductory Information
Two-Zone Alarm