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ASSURE Educational Services has put-together the scheme of work for Basic Electronics – SS1, SS2 and SS3 based on the National Curriculum and the syllabus of WAEC and NECO. All the topics highlighted in the National Curriculum and the syllabus of WAEC and NECO have been accommodated in our Scheme of Work.
End of term Assessment Tests in SS1, SS2 and SS3 alongside Overall Assessment Tests are available. Schools may adopt our scheme of work because of its simplicity and ease of monitoring of academic activities.
The Scheme of Work stated below is inexhaustible. Schools are encouraged to input weeks and periods of completion of topics in accordance with the academic calendar, number of students and available classes.
SS1 Basic Electronics – 1st Term Scheme of Work
|SS1||1st Term||ELECTRON EMISSION||Types of electron emission
Application of electron emission
|Qualitative treatment should include :
Thermionic emission; photoemission; secondary emission and field emission.
Relate it to diode, triode, tetrode, pentode, and cathode ray tube.
|MEASURING INSTRUMENTS||Concepts of measuring instrument
Principles of operation and protection of measuring instruments
|Qualitative treatment only which should include:
Classification – analogue and digital
Types and uses of multimeter, voltmeter, ammeter, ohmmeter, oscilloscope etc.
SS1 Basic Electronics – 2nd Term Scheme of Work
|SS1||2nd Term||SEMICONDUCTOR||Concepts of semiconductor
Semiconductor materials (silicon, germanium etc.)
Formation of p-type and n-type semiconductors.
|SEMICONDUCTOR DIODES||Concept of diodes||Operational principles of diodes|
|Biasing of diodes||Type of diodes
Diode ratings – voltage, current and power
Application of diodes
Construction of a simple circuit using a
P-N junction diode
Practical demonstration of I-V characteristics of P-N junction diode in the forward and reverse bias modes.
|TRANSISTORS||Concepts of transistor||Meaning of transistor, biasing of transistor, Uses and advantages.
Advantages of transistor over valves
Advantages of MOSFET over BJT
Formation, function and principles of
Transistor as a switch, inverter, an amplifier
Verification of BJT characteristics.
Input, output and transfer characteristics
Qualitative treatment only
– formation, functions and principles of operation
Advantages over discrete components
|OTHER SEMICONDUCTOR DEVICES||Thermistor, diac, triac and thyristor, etc||Circuit symbols
Principles of operation
|INTEGRATED CIRCUITS||Application of integrated circuits
Explanation of RAM, ROM and EPROM
SS1 Basic Electronics – 3rd Term Scheme of Work
|SS1||3rd Term||CIRCUIT ANALYSIS||ELECTRIC CURRENT||Structure of atom
Conductors and insulators
Direct and alternating current
Sources of direct current
Sources of alternating current
Uses of conductors and insulators
Differences between direct and alternating current
|RELATIONSHIP BETWEEN VOLTAGE, CURRENT AND RESISTANCE||Current, voltage and resistance.
Simple calculation of current, voltage and resistance.
Construction of simple circuit to demonstrate Ohm’s law
|ELECTRIC POWER||Concept of electric power
Relationship between power, current and voltage.
Other formulae for finding electrical power
Calculation of electric power in a given circuit
|CIRCUIT COMPONENTS||Types of resistors, capacitors and inductors
Symbols, signs and unit of measurement
Colour coding and rating of resistors and capacitors
Practical determination of the value of a fixed colour code resistor
|ELECTRIC CIRCUIT||Electric circuit
Circuit arrangement: series, parallel, series-parallel
Calculation on circuit arrangement
Carry out practical wiring of different circuit arrangement
|ALTERNATING CURRENT CIRCUITS||R-L-C circuits
– Concepts of capacitive reactance,
inductive reactance and impedance
– RL and RC circuits
– Calculations of capacitive reactance (XC) and inductive reactance (XL)
– Resonance frequency
– Principles of operation of an a.c. generator
|POWER IN A.C. CIRCUITS||– Power and power triangle
– Power factor and its correction
– Advantages and disadvantages of power factor correction
– Calculation of power factor
– Q-factor and bandwidth
SS2 Basic Electronics – 1st Term Scheme of Work
|SS2||1st Term||AMPLIFIERS||VOLTAGE AMPLIFIERS||Biasing methods. Treatment of the transistor as single stage.
Frequency response of an amplifier
Advantages and disadvantages of negative feedback
|POWER AMPLIFIERS||Classification: Class A, Class B, Class AB,
Class C, application, power gain, methods of biasing and efficiency.
Classification of power gain.
|PUSH-PULL AMPLIFIERS||Matched and complementary pairs.|
|OPERATIONAL AMPLIFIERS||Properties of an ideal operational amplifier
Inverting and non-inverting operational amplifiers(op-amps)
Types of operational amplifiers
Applications of op-amps
Simple calculations involving inverting, non-inverting, summing amplifiers and voltage follower
SS2 Basic Electronics – 2nd Term Scheme of Work
|SS2||2nd Term||POWER SUPPLY||D.C. POWER SUPPLY UNIT||Dry cells, solar cells, cadium cells, accumulators
Batteries: Rechargeable and non-rechargeable
|RECTIFICATION||– Rectification, regulation
– Types of voltage regulator e.g. diac, triac, thyristor, series voltage regulator, transistorized electronic voltage regulator
Functions of each block
|OSCILLATORS, MULTIVIBRATORS AND DIGITAL BASICS||OSCILLATORS||Difference between positive feedback(oscillator) and negative feedback (amplifier)
Principles of an oscillator
Types of oscillators: Hartley, Colpitts, phase shift, tuned (load and crystal) oscillators
Advantages of negative feedback
Calculations involving negative feedbacks
Block diagram of an oscillator
Application of oscillator
Principles of operation and applications
|Types of multivibrators
(monostable, bistable and astable)
|DIGITAL BASICS||Different number system e.g. binary, octal and hexadecimal
Simple calculation in binary number
Conversion from one base to another and vice-versa
Addition and subtraction of binary numbers
|Logic gates(Combinational)||Qualitative treatments of AND, OR, NOT, NOR and NAND
Logic gates using switching arrangements, truth table and Boolean expression
SS2 Basic Electronics – 3rd Term Scheme of Work
|SS2||3rd Term||COMMUNICATION SYSTEMS, TRANSDUCERS AND SENSORS||Electromagnetic waves||Relationship between velocity frequency and wave length|
|Characteristics and Principles of radio waves||Meaning of radio communication
Modulation and demodulation
Advantages of F.M. over A.M.
Phase modulation (mention only)
|Stages of radio receiver||Types of radio receivers
Advantages of superheterodyne over direct input receiver
|Fault detection in radio receiver||Use faulty radio and detect and repair fault
Project work on construction and designing of a simple radio receiver
|Transmitters and receivers||Block diagrams of A.M. and F.M. transmitters
Block diagrams of A.M. and F.M. superheterodyne radio receivers
Block diagrams of mono and colour T.V.chrome receivers
Functions of each block and direction of signal flow
Qualitative treatment of T.V. standard (NTSC,PAL,SECAM,BIG)
|Methods of Communication||Fibre optics, microwave, satellite, cellular phone, digital communication network, etc.|
|Transducers and Sensors||Meaning of transducers and sensors
Principles of operation
Types and uses to include: Acoustic, dynamic electrostatic, electromagnetic, capacitive, pressure sensor, photoelectric, proximity sensor etc.
Thermistor as a temperature sensing device
|Acoustic transducer||Types of acoustic transducers e.g. loudspeaker, microphone, earphone
Principles of operation and function
Application of acoustic transducers
SS3 Basic Electronics – 1st Term Scheme of Work
|SS3||1st Term||CONTROL SYSTEM||Control System||– Types of control circuits(open and close loop)
– Principle of operation of open loop and close loop
|SERVO MECHANISM||– Meaning
– Principle of operation, types, uses and application e.g. in car, doors, booths etc.
|MAGNETIC AND ELECTRIC FIELDS, ELECTROMAGNETIC INDUCTION/TRANSFORMERS||Electromagnetic field||Trace magnetic lines of force current-carrying conductor
Lenz’s and Faraday’s laws.
|Electromagnetic induction||Definitions only
Calculations involving energy stored in a coil
Applications of electromagnetism
Electric bell, solenoid, loudspeaker, buzzer, moving-coil instrument, moving-iron instrument, earphone and microphone
|Self and mutual induction|
SS3 Basic Electronics – 2nd Term Scheme of Work (Revision Class)