ecd_lab_eec_752.doc

LAB MANUAL

Electronic Circuit Design (EEC 752)

B.Tech VIIth Semester

PREPARED BY

Pawan Singh

Department of Electronics & CommunicationEngineering

B.N. College Of Engineering & Technology, Lucknow

SYLLABUS

EEC 752 Electronic Circuit Design

In this practical course students will carry out a design oriented project work using various analog/ digital building blocks which they have already studied in their analog electronic/ digital electronic courses such as Electronic circuits, integrated circuits and filter design. The project may include but not restricted to any of the following:

1. Universal op-amp based biquad2. Universal OTA biquad3. Amplitude control or stabilization applied to any sinusoidal oscillators4. Op-amp/ OTA based function generator5. Any application of log/antilog circuits6. Any applications of analog multiplier/ divider7. Any digital system design and its hardware implementation using TTL/ CMOS ICs8. Any circuit idea (not studied in the course) using 555 Timer in conjunction with any

other ICs

The above must include

1. Design the circuit.2. Make hardware and measure various parameters.3. Simulation in Spice of the designed circuit.4. Comparison of measured and simulated results.5. A report is to be made for evaluation.

B.N.COLLEGE OF ENGINEERING AND TECHNOLOGY, LUCKNOW

Department of Electronics & Communication Engineering

ELECTRONIC CIRCUIT DESIGN LAB (EEC- 752)

Experiment No. 1

OBJECT: To study of Universal op-amp based biquadTHEORY:

OTA may also be described as being a voltage to current converter or voltage controlled current source (VCIS). A conventional Op-APM can be used as a transmission conductanceamplifier for this purpose monolithic IC is specially designed. Such devices are called OTAs

CIRCUIT DIAGRAM:

PROCEDURE:

1. Connect the circuit as shown in fig and set power supply to + 15 volts2. Set the signal generator at sine wave to 1KHz

3. Connect oscilloscope to the output of op-amp4. Measure and record the peak to peak output signal voltage Vo and input signal Vin toamplifier and record the phase of input with the phase of output.

RESULT:

The OTA was studied in inverting configuration and it different parameters wereobserved on oscilloscope.

PRICAUTIONS:




Experiment No. 2

OBJECT: To study of a Universal OTA biquad.

APPARATUS:

i) OTA kitii) LM 3080iii) Resistors(47k,100k) 0hmiv) Capacitors(10uF)v) Function generatorvi) Oscilloscope

CIRCUIT DIAGRAM:

The proposed circuit of voltage mode universal biquadratic filter.

FORMULA:

OBSERVATION:

CALCULATION:

RESULT:

PRICAUTIONS:




Experiment No. 3

OBJECT: To study an Amplitude control or stabilization applied to any sinusoidal oscillators

APPARATUS:


CIRCUIT DIAGRAM:

Wein-Bridge Circuit Schematic

FORMULA:

OBSERVATION:Sketch the frequency domain representation for o/p signal and determine the modulating index.

CALCULATION:

RESULT:

PRICAUTIONS:




Experiment No. 4

OBJECT: Using Op Amp Circuits to Design and Build a Function Generator.

APPARATUS:

i) Frequency oscillator (1.8 KHz)ii) Ramp Amplitude (± 3 volts)iii) Op Amp (741)iv) VSAT (±7 volts)

CIRCUIT DIAGRAM:

FORMULA:

Practical design techniques for Oscillator circuit

1.) Ramp Amplitude ±VTH

= VSAT

R2

/ R3

2.) f = 1 / T

T = 2R1C

1ln[(V

SAT + V

TH) / (V

SAT - V

TH)]

3.) R1

C1

= T / 2 / ln[(VSAT

+VTH

) / (VSAT

- VTH

)]

Practical design techniques for Integrator circuit

4.) R4

= Vo(+max) / 800µA

5.) C2

= iI

/ (2VSAT

fL

)

6.) R5

= 10 / (2πfC2

)

7.) R6

= 1 / [(1/R4

) + (1/R5

)]

Practical design techniques for Differentiator circuit

8.) R8

= 25Vo(+max) / ISC

9.) C3

= Vo(+max)∆t / (R8∆V

I)

10).

11.) C5

= 10C3

12)

OBSERVATION:

R2

and R3

establish the amplitude of the ramp voltage for the oscillator

R1

and C1

determine the frequency of oscillation

R4

establishes the basic range of operation for the integrator circuit

C2

is used in integration of the triangle wave

R5

acts as an active filter

R6

is the parallel combination of R4

and R5

R7

and C4

act as an active filter

R8

establishes the basic range of operation for the differentiator circuit

R9

maintains equal DC resistances in both of the op amp input terminals

C4

reduces the gain at high-noise frequencies and yet minimize the effect

on normal circuit frequencies

C5

ensures that R9

will be effectively bypassed for all usable circuit frequencies

C3

is used in differentiation of the triangle wave

CALCULATION:

RESULT:

PRICAUTIONS:




Experiment No. 5

OBJECT: To study any application of log/antilog circuits

APPARATUS:


CIRCUIT DIAGRAM:

Fast Log Generator

Anti-Log Generator

FORMULA:

OBSERVATION:

CALCULATION:

RESULT:

PRICAUTIONS:




Experiment No. 6

OBJECT: Any applications of analog multiplier/ divider

APPARATUS:


CIRCUIT DIAGRAM:

Multiplier/Divider

FORMULA:

OBSERVATION:

CALCULATION:

RESULT:

PRICAUTIONS:




Experiment No. 7

OBJECT: Any digital system design and its hardware implementation using TTL/ CMOS ICs

APPARATUS:


CIRCUIT DIAGRAM:

FORMULA:

OBSERVATION:

CALCULATION:

RESULT:

PRICAUTIONS:




Experiment No. 8

OBJECT: Any circuit idea (not studied in the course) using 555 Timer in conjunction with any other ICs

APPARATUS:


CIRCUIT DIAGRAM:

FORMULA:

OBSERVATION:

CALCULATION:

RESULT:

PRICAUTIONS:

ecd_lab_eec_752.doc

Documents

designed circuit

circuit idea

oscilloscope circuit

otas circuit diagram

opamp ota

electronic circuits

filter design

op signal