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PARALLEL_T_FILTER_WITH_FEEDBACK

2017-02-17 07:20  
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PARALLEL_T_FILTER_WITH_FEEDBACK
Single-transistor feedback circuit Q2 reduces high attenuation in passband that severely limits conventional 60-cps T-notch filter, Filter response is down 1 db at 62 cps. Can be used in reproducing stereo tape, where it will salvage signals normally buried far below noise level of original tape recording. -J. Strattan , Feedback Improves Filter, Electronics, 39:18, p 99.