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Voltage Divider input to Diff amplifier : calculation missing

Question asked by ariesprg on Oct 13, 2013
Latest reply on Oct 14, 2013 by ariesprg

Hi ,

I designed a Galvanic skin response meter , it works well as per the circuit attached , The difference amplifier works as per formula . But the voltage divider combination when connected with Input of a Differential amplifier gives values not as per the voltage  divider formula , i need to calculate how this voltage generated across the circuit on what calculation basis . Kindly help me . i tried all possible combinations . Hope i miss something basic . Help me please ,. Circuit multisim simulation file screen shot attached . 


-- Pragadhees

   Biomedical Engineer