Published:2009/7/15 2:03:00 Author:Jessie | From:SeekIC
Commercial d-c amplifier with twin-T feedback tuningelement tunes from 0.5 to 100 cps, for analyzing low-frequency components of complexwaveforms.-J. IA. Reece, Subaudio Tunable Amplifier, Electronics, 32:45, p 72-74.
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