[ OPAMP의 기초 ]
 
   감산기 : opb008.sch

   Node방정식을 이용 해석하면             
                
                             V1/R1 + Vo/R2      V1 + Vo
                  Vref1 = -------------- = ------- ( ∵ R1 = R2 )   
                               1/R1 + 1/R2        1  +  1  

                             V2/R3 + 0/R4         V2
                  Vref2 = ------------- = ------- ( ∵ R3 = R4 )   
                              1/R3 + 1/R4       1  +  1  

                                Vref1 = Vref2 이므로

                                      V1 + Vo     V2
                                    -------- = ----   
                                           2          2  

                       따라서        Vo = V2 - V1
 
   시뮬레이션 조건 : Transient->Print Step[20n],Final Time[3m],StepCeiling[0.01m]
[ HOME | TOP | PREVIOUS | NEXT ]