Title :
Sinusoidal and square wave voltage controlled oscillators
Author_Institution :
Appl. Electron. & Telecommun./RICE, Univ. of West Bohemia, Plzen, Czech Republic
Abstract :
This paper presents a sinusoidal Wien-bridge and square wave wide range voltage controlled oscillators. The square wave oscillator´s uses ring and relaxation (Schmitt trigger) topology. All described oscillators have potential using in different application, 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.
Keywords :
trigger circuits; voltage-controlled oscillators; Schmitt trigger; optically coupled resistor; sinusoidal Wien-bridge voltage controlled oscillators; square wave voltage controlled oscillators; voltage controlled relaxation oscillators; voltage controlled ring oscillators; Frequency measurement; TV; Voltage-controlled oscillators; Wien-bridge oscillator; phase locked loop; photoresistor; ring oscillator; vactrol; voltage controlled oscillator;
Conference_Titel :
ELEKTRO, 2014
Conference_Location :
Rajecke Teplice
Print_ISBN :
978-1-4799-3720-2
DOI :
10.1109/ELEKTRO.2014.6848974
