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LIST OF EXPERIMENTS, 1 APPLICATION OF OP AMP I, 2 APPLICATION OF OP AMP II. 3 APPLICATION OF 555 TIMER I, 4 APPLICATION OF 555 TIMER II. 5 STUDY OF BASIC GATES, 6 IMPLEMENTATION OF BOOLEAN FUNCTIONS. 7 IMPLEMENTATION OF ADDER AND SUBTRACTOR, 8 CODE CONVERSION. 9 PARITY GENERATORS AND CHECKERS, 10 MULTIPLEXER AND DEMULTIPLEXER.

11 ENCODER AND DECODER, 12 REALISATION OF DIFFERENT FLIP FLOPS USING LOGIC GATES. 13 REALISATION OF COUNTERS, 14 REALISATION OF SHIFT REGISTERS. 15 FREQUENCY MULTIPLICATION USING PHASE LOCKED LOOP. 16 VOLTAGE CONTROLLED OSCILLATOR USING 566, STAFF INCHARGE HOD EEE. S No Date Name of the Experiment Marks Signature, 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, REFERENCE BOOKS.

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. APPARATUS REQUIRED, Sl No Name of the Apparatus Range Quantity. 1 Function Generator 20 MHz 1, 2 CRO 30 MHz 1, 3 Dual RPS 0 30 V 1. 4 Op Amp IC 741 1, 5 Bread Board 1, 6 Resistors As required. 7 Connecting wires and probes As required, 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 op. amp 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 op. amp 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. feedback resistor The output voltage of the circuit is governed by the equation. Vo 1 Rf R1 Va Vb Vc 3, VOLTAGE FOLLOWER, A unity gain buffer amplifier may be constructed by applying a full series negative. feedback Fig 2 to an op amp simply by connecting its output to its inverting input and. connecting the signal source to the non inverting input Fig 3 In this configuration the entire. output voltage 1 in Fig 2 is placed contrary and in series with the input voltage Thus the. two voltages are subtracted according to Kirchhoff s voltage law KVL and their difference is. applied to the op amp differential input This connection forces the op amp to adjust its output. voltage simply equal to the input voltage Vout follows Vin so the circuit is named op amp. voltage follower, PRECAUTIONS, Output voltage will be saturated if it exceeds 15V. 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 non inverting input terminal of the Op. 4 The output voltage is obtained in the CRO and the input and output voltage. waveforms are plotted in a graph sheet, PIN DIAGRAM. CIRCUIT DIAGRAM, Inverting Summing Amplifier, If resistor Ra Rb Rc has same value ie Ra Rb Rc R.

We know for an inverting Amplifier ACL RF R, Vo Rf R x Va Vb Vc. If the values of Rf and R are made equal then the equation becomes. Vo Va Vb Vc, Rm Ra Rb Rc Rf, OBSERVATIONS, Sl No Va in Volt Vb in Volt Vc in Volt Vo in Volt. CIRCUIT DIAGRAM, Non Inverting summing Amplifier, Assume R1 R2 R3 Rf 2 R. We know for a Non inverting Summing Amplifier, Vo 1 Rf R1 Va Vb Vc 3. V0 V1 V2 V3, OBSERVATIONS, Sl No Va in Volt Vb in Volt Vc in Volt Vo in Volt.

CIRCUIT DIAGRAM, Voltage Follower, Model Graph, The design and testing of the Inverting Non inverting amplifier and Voltage Follower is. done and the input and output waveforms were drawn. 2 APPLICATIONS OF OP AMP II, Differentiator and Integrator. To design a Differentiator circuit for the given specifications using Op Amp IC 741. REFERENCE BOOKS, 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. APPARATUS REQUIRED, S No Name ofthe Apparatus Range Quantity.

1 AFO 20 MHz 1, 2 CRO 30 MHz 1, 3 Dual RPS 0 30 V 1. 4 Timer IC IC 555 1, 5 Bread Board 1, 6 Resistors, 7 Capacitors. 8 Connecting wires and probes As required, Differentiator. The differentiator circuit performs the mathematical operation of differentiation that. is the output waveform is the derivative of the input waveform The differentiator may be. constructed from a basic inverting amplifier if an input resistor R1 is replaced by a capacitor. C1 The expression for the output voltage is given as Vo Rf C1 dVi dt. Here the negative sign indicates that the output voltage is 180 0 out of phase with the. input signal A resistor Rcomp Rf is normally connected to the non inverting input. terminal of the op amp to compensate for the input bias current A workable differentiator. can be designed by implementing the following steps. 1 Select fa equal to the highest frequency of the input signal to be differentiated Then. assuming a value of C1 1 F calculate the value of Rf. 2 Choose fb 20 fa and calculate the values of R1 and Cf so that R1C1 Rf Cf. 3 The differentiator is most commonly used in wave shaping circuits to detect high. frequency components in an input signal and also as a rate of change detector in FM. modulators, CIRCUIT DIAGRAM, Differentiator, We know the frequency at which the gain is 0 dB fa 1 2 Rf C1. Let us assume C1 0 1 F then, Since fb 10 fa fb, We know that the gain limiting frequency fb 1 2 R1 C1.

Also since R1C1 Rf Cf, OBSERVATIONS, Sl No Waveforms. 1 Input Waveform, 2 Output Waveform, CIRCUIT DIAGRAM. Integrator, We know the frequency at which the gain is 0 dB fa 1 2 Rf. Therefore Rf, Since fb 10 fa and also the gain limiting frequency. fb 1 2 R1Cf, OBSERVATIONS, Sl No Waveforms Time Period in ms.

1 Input Waveform, 2 Output Waveform, Pin diagram, Integrator. 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, Vo 1 Rf C1 Vi dt, Here the negative sign indicates input signal Normally between fa and fb fb The. input signal will be integrated or equal to Rf Cf That is. that the output voltage is 180 0 out of phase with the the circuit acts as an integrator. Generally the value of fa properly if the Time period T of the signal is larger than. The integrator is most commonly used in analog computers and ADC and signal. wave shaping circuits, 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. The output voltage is obtained in the CRO and the input and output voltage waveforms. are plotted in a graph sheet, MODEL GRAPH, DISCUSS QUESTIONS. 1 What is integrator, 2 Write the disadvantages of ideal integrator.

3 Write the application ofintegrator, 4 Why compensation resistance is needed inintegrator and how will you findit values. 5 What is differentiator, 6 Write the disadvantages of ideal differentiator. 7 Write the application of differentiator, 8 Why compensation resistance is needed in differentiator and how will you findit. Why integrators are preferred over differentiators in analog comparators. MODEL GRAPH, Comparator, OBSERVATIONS, Sl No Waveforms Time Period in ms. 1 Input Waveform, 2 Output Waveform, The design of the Integrator Differentiator and Voltage Follower circuit was done and.

the input and output waveforms were obtained, 3 TIMER APPLICATION ASTABLE MULTIVIBRATOR. To design an astable multivibrator circuit for the given specifications using 555 Timer. REFERENCE BOOKS, 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. APPARATUS REQUIRED, Sl No Name of the Apparatus Range Quantity. 1 CRO 30 MHz 1, 2 Dual RPS 0 30 V 1, 3 Timer IC IC 555 1.

4 Bread Board 1, 5 Connecting wires and probes As required. An astable multivibrator often called a free running multivibrator is a rectangular. wave generating circuit This circuit does not require an external trigger to change the state of. the output The time during which the output is either high or low is determined by two. resistors and a capacitor which are connected externally to the 555 timer The time during. which the capacitor charges from 1 3 Vcc to 2 3Vcc is equal to the time the output is high. and is given by, tc 0 69 R1 R2 C, Similarly the time during which the capacitor discharges from 2 3 Vcc to 1 3 Vcc is. equal to the time the output islow and is given by. td 0 69 R2 C, Thus the total time periodof the output waveform is. T tc td 0 69 R1 2 R2 C, The term duty cycle is often used in conjunction with the astable multivibrator The. duty cycle is the ratio of the time tc during which the output is high to the total time period. T It is generally expressed in percentage In equation form. dhanalakshmi college of engineering manimangalam tambaram chennai b e electrical and electronics engineering iii semester ee6311 linear and digital integrated circuits laboratory laboratory manual class ii year eee semester iii list of experiments 1 application of op amp i 2 application of op amp ii 3 application of 555 timer i 4 application of 555 timer ii 5 study of