The logarithm table circuits using operational amplifier

Published:2012/9/24 20:57:00 Author:Ecco | Keyword: logarithm table, operational amplifier | From:SeekIC

The circuit shown in Fig a can select NPN or PNP transistor in accordance with the polarity of the input signal, and its zero voltage can be adjusted by the potentiometer RP.The circuit shown in Figure b can be used as logarithm table, and its transistor can also select NPN or PNP according to polarity.



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