Title :
Systematic realization of low-frequency oscillators using composite passive-active resistors
Author :
Elwakil, Ahmed S.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. Dublin, Ireland
fDate :
4/1/1998 12:00:00 AM
Abstract :
A systematic method for realizing low-frequency oscillators is described. The method is applicable to any simple harmonic oscillator configuration and is based on replacing a selected passive resistor with a composite passive-active resistor. Two possible configurations for the composite resistor are discussed. The classical Wien-bridge oscillator is then modified using one of these configurations. PSPICE circuit simulations and experimental results are included
Keywords :
RC circuits; SPICE; bridge circuits; circuit simulation; feedback amplifiers; harmonic oscillators (circuits); operational amplifiers; PSPICE circuit simulations; RC oscillators; classical Wien-bridge oscillator; composite passive-active resistors; current feedback op amp; low-frequency oscillators; simple harmonic oscillator configuration; sinusoidal oscillators; systematic realization; Capacitors; Circuit simulation; Feedback circuits; Frequency; Impedance; Oscillators; Resistors; SPICE;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
