I'm using ua741 OP amp IC in that Rf and R1(connected to inverting terminal through GND) Resistor value is 10K (i.e Making gain 2db) respectively, in Non inverting amplifer Method. i'm getting 3.80Vat the OUTPUT Terminal even  taking 0v as a input voltage to non invertinng terminal... what is the problem ???????

hi Ganesh, the output pin of a 741 Op amp will be in floating condition. So try using a 10k pull down resistor on the output pin and check if you are getting 0V. Is the circuit working when the output voltage has to be more than 3.4V?

  Joined August 16, 2016      997
Tuesday at 12:29 AM