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BASIC ELECTRONICS

SS 2 FIRST TERM

WEEK

TOPIC/CONTENT

ACTIVITIES

1

ALTERNATING CURRENT

Concept of capacitive, reactance, inductive reactance and impedance.



Teacher explains the concept of capacitive reactance, inductive reactance, and impedance.

Students participate in class.

Define the following terms; capacitive reactance, inductive reactance and impedance.

Calculator resistors, inductors, Intructional Materials; capacitors, A.C source.



2

ALTERNATING CURRENT.

RL, RC, circuits.

Symbols units,

Abbreviations.



Teacher explains RL, RC and RLC circuits. Students explain RL, RC, and RLC circuits. Calculator resistors, inductors, capacitors, AC source. Circuit diagrams, teacher demonstrates the operations of RL, Intructional Materials; RC, and RLC circuits.

3

ALTERNATING CURRENT;

CALCULATION OF CAPACITIVE REACTANCE AND INDUCTIVE REACTANCE (XC and XC)



Teacher calculates capacitive reactance and inductive reactance.

Students calculate Xc and XL in a circuit, e.g calculate XL in a circuit of frequency of 50HZ and inductance of 20H. Calculate XC in a circuit of frequency 10HZ and Intructional Materials; Capacitance of 100MF. Circuit Intructional Materials; Diagrams.



4

ALTERNATING CURRENT.

Concept of resonance frequency, series and parallel resonance.



Teacher explains resonance frequency, series and parallel resonance. Circuit diagrams. Students explain series and parallel Intructional Materials; Resonance.

5

ALTERNATING CURRENT

Calculation of series and parallel resonance.



Teacher calculates series and parallel resonance students. Calculate series and parallel resonance.

Intructional Materials; Calculator, circuit diagrams.

6

POWER IN AC CIRCUIT.

Power and power triangle.

Power factor and its correction.


Teacher explains power triangle, power factor and power factor correction.

Students participate in class, explain power and power factor in AC circuits.



Intructional Materials;Charts on power triangle.

7

POWER IN AC CIRCUITS

Advantages and disadvantages.

Power factor correction.

Calculation of power factor.



Teacher explains the advantages and disadvantages of power factor correction.

Students state the advantages and disadvantages of power factor correction.



Intructional Materials; Chart on power triangle and power factor.

Teacher calculates power factor.

Students calculate power factor.


8

POWER IN AC CIRCUITS

Q factor and bandwidth.



Teacher explains Q-factor and bandwidth (FH and FL).

Students explain Q-factor and bandwidth.



Intructional Materials; Calculator, power triangle circuit diagram.

9

TRANSISTORS

Concept of transistors.

Biasing of transistors.


Teacher explains the concept of transistors. Leads discussion on biasing of a transistor. Students explain the concept of transistors, draw the transistor symbols. Explain biasing arrangement, draw transistor biasing arrangements. Transistors e.g bipolar, FET, JFET, MOSFET etc. charts showing pictures of transistors, it symbols.

10

TRANSISTORS

TYPES OF TRANSISTORS

Bipolar (NPN and PNP) transistor.

Field effect transistor (FET)

(N-channel and P-channel).

MOSFET transistors, meaning and symbols.


Teacher discusses basic bipolar transistor circuits. Explains types of transistors and symbols.

Students draw and explain common emitter collector and base circuits. State types of transistors and symbols.



Intructional Materials; Chart on types of transistors, biasing arrangements and bipolar transistor circuits.

11

TRANSISTORS

APPLICATION OF TRANSISTORS,

(e.g- amplifiers, switches, etc).



Teacher states the application of transistors.

Students state the application of transistors charts on areas of application of transistors.



12

Revision

Revision

13

Examination

Examination

14

Examination

Examination

BASIC ELECTRONICS

SS 2 2ND TERM

WEEK

TOPIC/CONTENT

ACTIVITIES

1

INTEGRATED CIRCUITS (IC) AND MICRO PROCESSORS.

Concept of integrated circuits (IC).

Advantages and disadvantages of IC.


Teacher explains the concept of integrated circuit. Discusses the advantages and disadvantages of IC. Students participate in class, define IC, state the active and passive components of IC.

ICs, microprocessors.



Intructional Materials; Charts on ICs and microprocessors.

2

INTEGRATED CIRCUITS (IC) AND MICRO-PROCESSORS.

Application of IC and microprocessors.



Teacher leads discussion on application of IC. Students state the application of IC.

Intructional Materials; Chart on areas of application of IC.

3

INTEGRATED CIRCUIT (IC) AND MICRO-PROCESSORS.

Concepts of micro-processors.

Explanation of terms in micro-processor--- RAM, ROM, EPROM.

Applications of micro-processors.



Teacher explains the following terms as related to micro-processor; RAM, ROM, EPROM. State application of micro-processor.

Students state the application of micro-processor, define; RAM, ROM AND EPROM as they relate to microprocessor.



Intructional Materials; Chart on micro-processors.

4

RECTIFICATION

REGULATION

Teacher explains rectification, guides discussion on the principle of operation of rectifier, half-ware, and full-ware rectifiers. Explains regulators and its functions.

Students explain the use of rectifier in power supply unit. State the difference between half-ware and full-ware rectifiers.

State the functions of voltage regulator in power supply unit.

Intructional Materials; Diodes, resistors, transistors, pictures of rectifiers and voltage regulators.

Students; draw the circuit diagrams of full-ware and half-ware rectifiers.



5

POWER SUPPLY UNIT

Types of voltage regulators.

Series voltage regulator.

Transistorized electric voltage regulator.



Teacher lists and explains the different types of voltage regulator.

State the difference between series voltage regulator and transistorized voltage regulator. Students listen attentively, and state the functions of a voltage regulator in a power supply unit.



Intructional Materials; Pictures of rectifiers and voltage regulators, transistorized electronic voltage regulator.

6

POWER SUPPLY UNIT

Operation of voltage regulators (series voltage regulators and transistorized electronic voltage regulator).



Teacher explains the principles of operation of a voltage regulator.

Students describe the operation of a voltage regulator. Demonstrate, constructing a full-ware rectifier circuit with a transistorized voltage regulator.



Intructional Materials; Project board, diodes, resistors, transformer, wires, transistorized voltage regulator.

7

RADIO TRANSMISSION AND RECEPTION

Principles of radio transmission and reception.



Teacher explains the concept of radio-transmission and reception.

Students listen and participate in class discussion, describe the concept of radio transmission and reception system.



Intructional Materials; Charts showing block diagram of radio transmission system.

8

RADIO TRANSMISSION AND RECEPTION

Stages of radio receiver (AM & FM) e.g. Tuner, AF amplifiers, detector and power supply.



Teacher explains the functions of each stage of AM &FM radio receiver.

Students carry out systematic detection in a typical radio receiver.



Intructional Materials; Charts showing stages of a typical radio receiver.

9

RADIO TRANSMISSION AND RECEPTION

Comparison of AM and FM receiver, fault detection in , radio receiver.



Teacher demonstrates how to dictate fault in a radio receiver. Take students on field trip.

Students go on field trip.



Intructional Materials; Multimeter, oscilloscope

10

RADIO TRANSMISSION AND RECEPTION

Block diagram of stages of a TV receiver.



Teacher explains the stages of a TV receiver using a block diagram.

Students describe each stage of a TV receiver using block diagram.



Intructional Materials; Charts showing stages of a typical receiver.

11

HAND TOOLS

Meaning of hand tools.

Types and uses of hand tools (soldering iron, nose- plier, side-cutter etc), electrician knife, brushes, screw-drivers.


Teacher defines hand tools. Explains the different hand tools and their uses.

Students participate in class discussion, ask and answer questions, copy notes.



Intructional Materials; Various hand tools, charts showing hand tools.

12

Revision

Revision

13

Examination

Examination

BASIC ELECTRONICS

SS 2 THIRD TERM

WEEK

TOPIC/CONTENT

ACTIVITIES

1

MEASURING INSTRUMENTS

Concept of measuring instruments.

Classification of measuring instrument (analogue and digital).


Teacher explains the concept of measuring instruments.

Explain the terms analogue and digital measuring instrument. Students listen to teacher’s explanations, participate in discussion.

Define measuring instrument. Differentiate between analogue and digital.

Intructional Materials; Various measuring instruments both analogue and digital.


2

MEASURING INSTRUMENTS

Types and uses of measuring instruments (multimeter, voltmeter, ammeter, oscilloscope, ohmmeter, wattmeter etc)



Teacher demonstrates using measuring instruments to measure electric quantities;

Multimeter, voltmeter, ohmmeter, ammeter, wattmeter, oscilloscope etc.

Explains the uses of measuring instruments.

Students use measuring instruments to measure electronic quantities; various measuring instruments.



Intructional Materials; Charts showing measuring instruments, circuit boards.

3

TRANSDUCERS AND SENSORS

Transducers

Sensors

Types and uses of transducers



Types and uses of sensors.

Teacher explains the meaning of transducers and sensors, and their types (acoustic and photo electric transducers)

(Proximity sensor). Demonstrate the uses of sensors.

a. Students participate in class discussion.

b. Observe teacher’s demonstration

c. Define transducers and sensors.

d. State types of transducers.

e. State types of sensors.

f. Explain uses of transducers and sensors.



Intructional Materials; Charts showing different types of transducers and sensors.

4

TRANSDUCERS AND SENSORS

Principles of operation of transducers and sensors.



Teacher describes the operation of a transducer, and the operation of a sensor.

Students participate in class discussion. Practice use of sensor as demonstrated by teacher.



Intructional Materials; Charts showing different types of transducers and sensors.

5

TRANSDUCERS AND SENSORS

Acoustic transducer.

Types of acoustic transducers, e.g loud-speaker, microphone, ear-phone.

Application of acoustic transducer.



Teacher explains the different types of acoustic transducers. Explains the application of acoustic transducers e.g tweeter, micro-phone, underwater speaker.

Students participate in class discussion, ask and answer questions, copy notes.



Intructional Materials; Loud-speakers, micro-phones, ear-phones, and charts showing acoustic transducers.

6

NUMBER SYSTEM

Identification and formation of different number systems e.g. binary, octal, hexadecimal



Teacher explains different number system.

Students participate in lessons, write sequentially in figure, different number system.



Intructional Materials; Logic modules

7

NUMBER SYSTEM

Simple calculation in binary number.

Conversion from one base to another, e.g. binary to octal or hexa to binary and vice versa.


Teacher demonstrates addition and subtraction in binary numbers. Converts from one number base to another.

Students practice addition and subtraction of number base, convert from one base to the other.



Intructional Materials; Logic modules, charts showing different number system.

8

LOGIC GATES

Concept of logic gates.

Types of logic gates, e.g. OR, NOR, AND, NAND, etc.


Teacher explains logic gates, leads students to identify different logic gates.

Students listen attentively, participate in class discussion,



Intructional Materials; Charts showing different logic gates.

9

LOGIC GATES

Construction of TRUTH tables (OR, NOR, AND, etc)



Teacher demonstrates the construction of truth table of the above logic gates.

Students construct TRUTH tables of OR, NOR, AND, and NAND.



Intructional Materials; Charts showing different TRUTH tables.

10

LOGIC GATES

Construction of TRUTH table. (NOR, XOR, XNOR).



Teacher demonstrates construction of NOR, XOR, XNOR, logic gates.

Intructional Materials; Charts showing different TRUTH tables.

11

Revision

Revision

12

Examination

Examination

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