soos2014
Newbie level 4
I need help in designing a sine wave oscillator for frequencies 30-100 khz i tried lots of circuits but got distorted waveforms, amplitude variations and other non linearities with frequency variations. any suggestions?
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I need help in designing a sine wave oscillator for frequencies 30-100 khz i tried lots of circuits but got distorted waveforms, amplitude variations and other non linearities with frequency variations. any suggestions?
Correct! 30khz n not 30 hz. discrete components are no problem sir, but special ics may not be available to me. though i tried the 8038 and got distorted output too
I need help in designing a sine wave oscillator for frequencies 30-100 khz i tried lots of circuits but got distorted waveforms, amplitude variations and other non linearities with frequency variations. any suggestions?
Correct! 30khz n not 30 hz. discrete components are no problem sir, but special ics may not be available to me. though i tried the 8038 and got distorted output too
A Wein-bridge type oscillator would give you the frequency range you want but you would need a dual-pot or dual-gang capacitor to tune the frequency.
Some previous threads about single resistor tuneable sine oscillators (not only Wien bridge):
https://www.edaboard.com/threads/178535/
https://www.edaboard.com/threads/210760/
Not so good as it seems. I remembered that there have been threads about single resistor tuned oscillators, but it took me several runs of the search tool to find (at least part of) it.FvM - your memory seems to be much better than mine.