Stable Frequency and Amplitude Sine Wave Output Circuit

Published:2011/6/14 21:19:00 Author:Michel | Keyword: Stable Frequency and Amplitude, Sine Wave, Output Circuit | From:SeekIC

Circuit's Functions The sine wave oscillation circuit requires that oscillation frequency and output level are very steady.It's hard to realize if common CR oscillation circuit is adopted but this circuit can meet the requirement. square wave can be changed into sine wave when low-pass filter is used.But waveform distortion depends on filter's cutoff characteristics and filter's levels should increase and ultraharmonics are greatly reduced to get low distortion waveform. Circuit's Work PrincipleThe quartzquartz crystal oscillator circuit generating clocksignal frequency is divided into 1KHZ by frequency division circuit.The waveform dutyfactorrate is set to 50%:50% to reduce thedistortion caused by even-order harmonic .It can use binary counting frequency demultiplier directly.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/Stable_Frequency_and_Amplitude_Sine_Wave_Output_Circuit.html

Print this Page | Comments | Reading(3)