Paper Info
Title
RLC-oscillator with smooth transition from sinusoidal to relaxation oscillations
Abstract
The paper considers transition from sinusoidal to relaxation oscillations in the RLC-oscillator the frequency of which is tuned by the resonator capacitance. The active element of this oscillator is a transconductance amplifier with limited output current. When the tuning capacitor is large the oscillations are nearly sinusoidal. Diminishing the tuning capacitor value one moves smoothly from sinusoidal to relaxation oscillations, and when this capacitor is reduced to zero value the oscillator becomes an RL-(magnetic) multivibrator. The transition is illustrated using two root loci; the first is called the placement root-locus, and it describes the location of characteristic equation roots when the tuning capacitor changes but the oscillations have not started yet. The second root locus is called the dynamical root locus, and it represents the periodic movement of the root locations within one oscillation period, and the oscillator is in steady-state oscillations. The oscillator was realized using a bipolar transconductance amplifier and then tested, and smooth transition from sinusoidal to relaxation oscillation was confirmed.
Year
DOI
Venue
2013
10.1109/MWSCAS.2013.6674606
Circuits and Systems
Keywords
Field
DocType
rlc circuits,multivibrators,operational amplifiers,oscillations,oscillators,tuning,rl-magnetic multivibrator,rlc-oscillator,bipolar transconductance amplifier,characteristic equation roots,dynamical root locus,oscillation period,output current,periodic movement,placement root-locus,relaxation oscillation,resonator capacitance,root loci,sinusoidal oscillation,smooth transition,steady-state oscillations,tuning capacitor value,zero value,dynamic root locus,relaxation oscillations,sinusoidal oscillations,static root locus
Oscillation,Capacitor,Capacitance,Resonator,Operational transconductance amplifier,Control engineering,Electronic engineering,Multivibrator,RLC circuit,Operational amplifier,Physics
Conference
ISSN
Citations 
PageRank 
1548-3746
0
0.34
References 
Authors
6
2
Name
Order
Citations
PageRank
Filanovsky, I.M.14011.56
Chris J. M. Verhoeven27219.18