05-02-2013, 03:57 PM
INTEGRATOR
INTEGRATOR.docx (Size: 31.13 KB / Downloads: 22)
AIM:
To design an Integrator circuit for the given specifications using Op-Amp IC 741.
THEORY:
A circuit in which the output voltage waveform is the integral of the input voltage waveform is the integrator. Such a circuit is obtained by using a basic inverting amplifier configuration if the feedback resistor Rf is replaced by a capacitor Cf . The expression for the output voltage is given as,
Here the negative sign indicates that the output voltage is 180 0 out of phase with the input signal. Normally between fa and fb the circuit acts as an integrator. Generally, the value of fa < fb . The input signal will be integrated properly if the Time period T of the signal is larger than or equal to Rf Cf. That is,
The integrator is most commonly used in analog computers and ADC and signal-wave shaping circuits.
PROCEDURE:
1. Connections are given as per the circuit diagram.
2. + Vcc and - Vcc supply is given to the power supply terminal of the Op-Amp IC.
3. By adjusting the amplitude and frequency knobs of the function generator, appropriate input voltage is applied to the inverting input terminal of the Op-Amp.
4. The output voltage is obtained in the CRO and the input and output voltage waveforms are plotted in a graph sheet.
RESULT:
The design of the Integrator circuit was done and the input and output waveforms were obtained.