Precision Full Wave Rectifier Using Op Amp. The precision rectifier is another rectifier that converts ac to dc but in a precision rectifier we use an op amp to compensate for the voltage drop across the diode that is why we are not losing the 0 6v or 0 7v voltage drop across the diode also the circuit can be constructed to have some gain at the output of the amplifier as well. See the normal rectifier diode.
Thus output of op amp a2i e. Output voltage is given as vo r r vin r r 2 v vo vin 2v substituting v v in vo vin in negative half cycle of applied ac input signal output of first op amp a1 is positive. Two stages op amp full wave precision rectifier based on the concept described above about turning a half wave precision rectifier circuit into a precision full wave we may combine the circuits on figures 1 and 4 in order to make a two stages op amp full wave precision rectifier.
Therefore output of op amp a1 is v 1 vin vin op amp a2 works as an inverting adder.
Two stages op amp full wave precision rectifier based on the concept described above about turning a half wave precision rectifier circuit into a precision full wave we may combine the circuits on figures 1 and 4 in order to make a two stages op amp full wave precision rectifier. The precision rectifier is another rectifier that converts ac to dc but in a precision rectifier we use an op amp to compensate for the voltage drop across the diode that is why we are not losing the 0 6v or 0 7v voltage drop across the diode also the circuit can be constructed to have some gain at the output of the amplifier as well. Therefore output of op amp a1 is v 1 vin vin op amp a2 works as an inverting adder. Full wave precision half wave rectifier circuit using op amp basic diode rectifier.
