Two Golden Rules of Op-Amps Ideal Operational Amplifier Voltage at negative terminal Voltage at positive terminal (imaginary short) R2 Ex.(Ogata,pp.96) R Calculate the e; eo voltage ratio :eo/eiIdeal Operational Amplifier • Voltage at negative terminal = Voltage at positive terminal (imaginary short) Ex.( Ogata, pp.96 ) + - i e 0 e e R1 R 2 Calculate the voltage ratio :e 0/ei Two Golden Rules of Op-Amps