5OO_MICROAMP_AT_3O_TO_30000_CPS

Published:2009/7/14 4:43:00 Author:May | From:SeekIC

Used to drive 60-mh transducer at constant current without allowing d-c through transducer. Achieved by biasing Q3 and Q4 on all the time, so each acts as collector resistance for the other.-S. Sokol, Transistor Pair Provides Constant-Current Drive, Electronics, 35:38, p 56.



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