WIDEBAND_ACTIVE_PHASE_SHIFTER

Published:2009/7/21 22:27:00 Author:Jessie | From:SeekIC

Active audio phase-shift network uses two LM324 quad opamps to provide equal amplitude outputs differing in phase by 90°±2° from 100 Hz to 10 kHz. Each stage is adjusted with 4.7K trim-pot to give 90° phase shift at frequency shown on diagram. Align with audio oscillator and CRO or phase meter. Operates from single 5-V supply. Overall gain of entire circuit is unity.-R.Harrison, A Review of SSB Phasing Techniques, Ham Radio, Jan. 1978, p 52-62.



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