Experiment No: 8 Electronic Workshop

YouTube Link : https://www.youtube.com/watch?v=GsIJwb5C3EU

Experiment No: 8

Assembling and Testing of simple electronic circuits on breadboards; identifying the components and its location on the PCB, Soldering of the components, testing the assembled circuit for correct functionality.

Aim:

a)      Design the LED Blinking circuit on breadboard.

b)      Design the LED Blinking circuit on PCB using Soldering Iron

Components and Equipments Required:

S.NO	Components / Equipments	Range	Quantity
1	Regulated Power Supply or 9V Battery	9V	1
2	LEDs	--	2
3	Resistors	47KΩ, 470Ω	Each 2
4	Transistors BC 107	--	2
5	Bread Board	--	1
6	Soldering Iron	--	1
7	General PCB Board	--	1
8	Led wire	--	--

                                                                                                                                          

Theory:

Circuit Diagram 1:

Procedure:

Part 1:

1. Connections are made as per the circuit diagram1.
2. The RPS +ve is connected to the one end of the resistors and RPS –ve is connected to the Transistors' emitter ends.
3. Switch on the power supply and increases the input voltage (supply voltage).
4. Observe the LEDs Blinking.
5.  Repeat the same procedure in PCB

Practical Calculations:

S.NO	R1	R2	C1	C2	T1	T2	f1	f2

T₁=R₁C₁ ln 2

T₂=R₂C₂ ln 2

If R₁ = R_2, C₁= C₂

find

T=

F=

Precautions:

1. Connections are made as per the circuit diagram and should be tight.

2. Do not connect power to a circuit until the circuit is finished and never work on a circuit while power is applied.

3. If anything is burning, immediately disconnect the power and examine your circuit to find out the problem.

Outcomes:

Results: 

LICA - 5th Unit : Timers and PLL

Introduction to 555 Timer
Functional Diagram
Monostable and Astable operations and applications
Schmitt Trigger
PLL – Introduction
block schematic, principles and description of individual blocks
565 PLL

Applications of PLL – frequency multiplication, frequency translation

AM, FM & FSK Demodulators
Applications of VCO (566)

Experiment No: 3 - Electronic Workshop Lab

EXPERIMENT NO: 3

Electronic Components: Familiarization/Identification of electronic components (Resistors, Capacitors, Inductors, Diodes, Transistors etc.) Functionality, type, size, color coding, package, symbol, cost etc.

AIM:

a) Identify the types of Resistors, Capacitors, Inductors,Diodes,transistors etc. and their functionality.

b) To find out the equivalent resistance value of the series and parallel circuit and mention the color coding of resistors.

c) To find out the equivalent capacitance value of the series and parallel circuit.

d) To design and observe the performance of a transistor as a switch.

APPARATUS:

S.NO	Components / Equipment’s	Range	Quantity
1	Regulated Power Supply	(0-30V DC)	1
2	Voltmeters	(0-20V DC)	1
3	Ammeters	(0-100 mAmps)	1
4	Capacitors, Resistors	Different Ranges	-
5	LED		1
6	Transistor(BC107)		1
7	Bread Board		1

CIRCUIT DIAGRAMS:

Circuit diagram 1: Series Equivalent Resistance Circuit

Circuit diagram 2: Parallel Equivalent Resistance Circuit

Circuit diagram 3: Series Equivalent Capacitance Circuit

Circuit diagram 4: Parallel Equivalent Capacitance Circuit 

Circuit diagram 5: Transistor as a Switch

PROCEDURE:

Part: 1

Ø  Connect the circuit on breadboard as per the circuit diagram1.

Ø  Apply 5v dc as an input to the circuit by using DRPS.

Ø  Note down the color coding of the given resistor values.

Ø  Measure the Equivalent Resistance which is connected in series and note it down.

Part: 2

Ø  Connect the circuit on breadboard as per the circuit diagram2.

Ø  Apply 5v dc as an input to the circuit by using DRPS.

Ø  Note down the color coding of the given resistor values.

Ø  Measure the Equivalent Resistance which is connected in parallel and note it down.

Part: 3

Ø  Connect the circuit on breadboard as per the circuit diagram3.

Ø  Apply 5v dc as an input to the circuit by using DRPS.

Ø  Measure the Equivalent capacitance which is connected in series and note it down.

Part: 4

Ø  Connect the circuit on breadboard as per the circuit diagram4.

Ø  Apply 5v dc as an input to the circuit by using DRPS.

Ø  Measure the Equivalent capacitance which is connected in parallel and note it down.

Part: 5

Ø  Connect the circuit on breadboard as per the circuit diagram5.

Ø  Apply 5v dc as an input to the circuit by using DRPS.

Ø  Apply 5v dc as a supply voltage to the circuit using DRPS.

Ø  Measure the Voltage across the diode at the output and note it down.

OBSERVATIONS:

Part: 1

Theoretical values

           

Resistor value	Color 1	Color 2	Color 3	Tolerance	Voltage at each resistor	Current at each resistor
R1=
R2=
R3=

R_eq= R₁+R₂+R_{3 =}.

Part: 2

Theoretical values

           

Resistor value	Color 1	Color 2	Color 3	Tolerance	Voltage at each resistor	Current at each resistor
R1=
R2=
R3=

R_eq = 1/R₁+1/R₂+1/R_{3 =}.

Part: 3

Theoretical values

           

C_eq = 1/C₁+1/C₂+1/C_{3 =}.

S.No	Capacitor value	Voltage at each capacitor	Current at each capacitor
1	C1=
2	C2=
3	C3=

Part: 4

Theoretical values

C_eq = C₁+C₂+C_{3 =}.

S.No	Capacitor value	Voltage at each capacitor	Current at each capacitor
1	C1=
2	C2=
3	C3=

Part: 5

Theoretical values

When V_i=+2.5v, the transistor goes into saturation region.

So, Vout =Vce (sat) =0.3V.

When V_i=-2.5v, the transistor goes into cutoff region.

So, Vout =Vcc =5v

Tabular Form:

Part: 5

S.No	Input voltage(vi)	Output voltage at LED	Transistor OFF/ON
1
2
3
4
5

PRECAUTIONS:

Connections should be made carefully.

 Verify the circuit before giving supply voltage.

Take reading without any parallax error.

APPLICATIONS:

 RLC components are used in Transistor.

 PN junction diode can be used as a switch.

 Zener diode can be used as voltage regulator.

Transistor can be used a amplifying the signal and also as a switch.

RESULTS:

OUTCOMES: