-90° Phase-shifting Circuit (Variable in 0~-180°)

Published:2011/6/4 22:14:00 Author:Michel | Keyword: -90° Phase-shifting Circuit, Variable in 0~-180° | From:SeekIC

The ±90°phase-shifting circuit with flat frequency characteristics can shift circuit in 0~+180°.Circuit's Work PrincipleThe work's principle is same with the ±90°phase-shifting circuit with flat frequency characteristics and it only changes the polarity of the phase.Here only the calculation method of the phase variable range is instructed.When FO is equal to 1KHZ,φis equal to -60~-120° and ，CO is equal to 0.01UF,RO is equal to 15.92K.If the RO is variable,phase angle,φ=-2TAN（RX/R0）and when RX is equal to RO,φis 90°.



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