OR_LOGIC_FOR_MUTlNG

Published:2009/7/2 5:17:00 Author:May | From:SeekIC

Connection shown for National LM389 combination of three transistots with opamp gives standard OR circuitfor controlling muting transistor in audio system.Shorting pin 12 of opamp to ground gives NOR logic.- Audio Handbook, National Semiconductor, Santa Clara, CA, 1977, p 4-33-4-37.



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