LARGE_VOLTAGE_SWING_WITH_WIMITED_SUPPLY_VOLTAGES

Published:2009/7/20 3:08:00 Author:Jessie | From:SeekIC

Circuit shows usual solution to problem, wherein final transistor is operated near positive supply voltage and zener diode provides coupling. Drop in gain caused by R can be eliminated by using constant-current diode in place of R. If R1, R2, and R3 are similarly replaced with these diodes, circuit becomes independent of positive line, eliminating spurious feedback through this line.-T. K. Hemingway, Applications of the Constant-Current Diode, Electronics, 34:42, p 60-63.



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