Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

Low-distortion Audio-range Oscillator

Low-distortion Audio-range Oscillator

This generates very low-distortion sine waves up to 1V RMS,this oscillator operates over the range 16 to 22000 Hz.There is no settling time when the oscillator’s frequency is changed and no bouncing of the output waveform. Use of an expensive and sometimes difficult to obtain thermistor is avoided
The circuit is based on two articles that have appeared earlier in Wireless World – Roger Rosens’ “Phase -Shifting Oscillator”, February 1982 pp. 38-41, and J. L. Linsley Hood’s “Wien-Bridge Oscillator with low harmonic distortion” from May 1981.
This design features the simplicity of the Rosens’ circuit but avoids the use of a thermistor. Instead, oscillator stability is controlled by means of a common photo-resistor driven by a LED, as suggested in the Linsley Hood article.

Output voltage: Sine wave, 1V RMS max.

Total harmonic distortion @ 1V RMS output:

Frequency Reading
100Hz = 0.0035%
300Hz = 0.0028%
1kHz = 0.002 %
3kHz = 0.002 %
10kHz = 0.001 %

Visit Here for more.

 

More Articles to Read

Bookcase automatically opens to reveal secret lair
Bookcase automatically opens to reveal secret lair
PCI Express High Performance Reference Design
PCI Express High Performance Reference Design
Muxtronics open source 12V powerbank
Muxtronics open source 12V powerbank
TI’s Little Professor
TI’s Little Professor
App note: Testing inductors at application frequencies
App note: Testing inductors at application frequencies
1968 Princeton Reverb Repairs
1968 Princeton Reverb Repairs
Skill Sunday: Power Over Ethernet for Arduino
Skill Sunday: Power Over Ethernet for Arduino
More on Color TFT Displays ~ The Big Ones — 240 X 320
More on Color TFT Displays ~ The Big Ones — 240 X 320
Magnetic Rotary Encoder
Magnetic Rotary Encoder
Vertical Pole Climbing Robot
Vertical Pole Climbing Robot

Top




Shares