Sinusoidal and Relaxation Wide Range Voltage Controlled Oscillators
Sinusoidal and Relaxation Wide Range Voltage Controlled Oscillators
Author(s): Milan ŠtorkSubject(s): Energy and Environmental Studies, Methodology and research technology
Published by: Žilinská univerzita v Žilině
Keywords: Wien-bridge oscillator; relaxation oscillator; phase locked loop; voltage controlled oscillator; photoresistor; quadrature oscillator;
Summary/Abstract: This paper presents a sinusoidal Wien-bridge and square wave wide range voltage controlled oscillators. The square wave oscillator is based on relaxation (Schmitt trigger) topology. All described oscillators have potential use in different applications, e.g. phase locked loops, modulation and detection. The frequency changing is based on optically coupled resistor with 100 dB dynamic range. The oscillators were constructed and measured. The new method for amplitude control for quadrature oscillator is also described.
Journal: Komunikácie - vedecké listy Žilinskej univerzity v Žiline
- Issue Year: 17/2015
- Issue No: 1A
- Page Range: 83-88
- Page Count: 6
- Language: English