landlines of low frequency circuit

Published:2011/6/27 21:59:00 Author:chopper | Keyword: landlines, low frequency circuit | From:SeekIC

In the low frequency circuit,different grounding methods will effect a lot to the circuit performance when deal with the weak level signal.The picture a,b are the grounding methods of amplifier circuit.The picture (a) is a inverse amplification circuit,and it takes the same phase input terminal of operational amplifier as benchmark by connecting it to ground through resistor to amplify.The picture(b) is a in phase amplification circuit and it takes the inverse input end of operational amplifier as benchmark by connecting it to ground through resistor to amplify.



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