HIGH_GAIN_INTERCOM

Published:2009/7/10 21:54:00 Author:May | From:SeekIC

Internal bootstrapping in National LM388 audio power amplifier IC gives output power levels above 1 W at supply voltages in range of 6-12 V, with minimum parts count. AC gain is set at about 300 V/ V, eliminating need for stepup transformer nor mally used in intercoms. Optional RC network suppresses spurious oscillations.- Audip Handbook, National Semiconductor, Santa Clara, CA, 1977, p 4-37-4-41.



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