1. APPLICATIONS OF OP-AMP-I
To design an inverting amplifier, non-inverting amplifier and voltage follower for the
given specifications using Op-Amp IC 741
1. Ramakant A.Gayakward, ‘Op-amps and Linear Integrated Circuits’, IV edition, Pearson
Education, 2003 / PHI. (2000).
2. D.Roy Choudhary, Sheil B.Jani, ‘Linear Integrated Circuits’, II edition, New Age, 2003.
Name of the Apparatus
0 – 30 V
Connecting wires and probes
INVERTING SUMMING AMPLIFIER
Summing amplifier is a type operational amplifier circuit which can be used to sum
signals. The sum of the input signal is amplified by a certain factor and made available at the
output .Any number of input signal can be summed using an op-amp. The circuit shown is a
three input summing amplifier in the inverting mode.
In the circuit, the input signals Va, Vb, Vc are applied to the inverting input of the opamp through input resistors Ra, Rb, Rc. Any number of input signals can be applied to the
inverting input in the above manner. Rf is the feedback resistor. Non inverting input of the opamp is grounded using resistor Rm. RL is the load resistor.
NON-INVERTING SUMMING AMPLIFIER
A non inverting summing amplifier circuit with three inputs is shown above. The
voltage inputs Va, Vb and Vc are applied to non inverting input of the op-amp. Rf is the