Quadrature Oscillators Using Operational Amplifiers | Zendy

JiunWei Horng | Zendy

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Quadrature Oscillators Using Operational Amplifiers

Author(s) -

JiunWei Horng

Publication year - 2011

Publication title -

active and passive electronic components

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.144

H-Index - 22

eISSN - 1026-7034

pISSN - 0882-7516

DOI - 10.1155/2011/320367

Subject(s) - quadrature (astronomy) , amplifier , operational amplifier , electrical impedance , electronic circuit , oscillation (cell signaling) , control theory (sociology) , electronic engineering , computer science , engineering , electrical engineering , control (management) , cmos , artificial intelligence , biology , genetics

Two new quadrature oscillator circuits using operational amplifiers are presented. Outputs of two sinusoidal signals with 90° phase difference are available in each circuit configuration. Both proposed quadrature oscillators are based on third-order characteristic equations. The oscillation conditions and oscillation frequencies of the proposed quadrature oscillators are orthogonally controllable. The circuits are implemented using the widely available operational amplifiers which results in low output impedance and high current drive capability. Experimental results are included

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